Shear wave measurement result display method and ultrasonic imaging equipment

Abstract

The embodiment of the invention discloses a shear wave measurement result display method and ultrasonic imaging equipment. The ultrasonic imaging device obtains shear wave data of a region of interest of a measured object, tissue motion information corresponding to at least two different shear wave frequencies is extracted from the shear wave data, shear wave measured values of the tissue motion information corresponding to selected frequencies are mapped into shear wave images, and the shear wave images corresponding to the selected frequencies are displayed. And when the operation of switching the selected frequency to the target frequency by the user is received, switching and displaying the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency. A doctor can randomly switch different shear wave frequencies to observe shear wave measurement results of tissues under different shear wave frequencies, so that the doctor can conveniently observe physiological states and health conditions of the tissues from multiple dimensions, and the doctor can more conveniently make accurate diagnosis by integrating the shear wave measurement results of multiple shear wave frequencies; and the accuracy of tissue ultrasonic examination is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical devices, and particularly to a method for displaying shear wave measurement results and an ultrasonic imaging device. Background Art

[0002] Ultrasonic elastography has been more widely applied to clinical research and diagnosis in recent years. It can qualitatively reflect the softness or hardness of a lesion relative to the surrounding tissue, or quantitatively reflect the softness or hardness of the lesion and the surrounding tissue. Currently, it is usually applied clinically in aspects such as the thyroid gland, breast, musculoskeletal, liver, and vascular elasticity. The judgment of the softness or hardness of tissues can effectively assist in the diagnosis and evaluation of cancer lesions, the benign and malignant nature of tumors, and postoperative recovery, etc.

[0003] Conventional elastography (compression elastography) presses the tissue with an ultrasonic probe and calculates the displacement and strain of the tissue in real time to reflect the elastic-related parameters of the tissue in the ROI (Region of Interest) area and form an image, which also indirectly reflects the softness or hardness of different tissues. However, the operation of pressing the tissue each time is performed by a person, and it is difficult to maintain the consistency of the probe pressure. The pressing degree and pressing frequency of different operators will also vary. Therefore, the repeatability and stability of conventional elastography are difficult to guarantee.

[0004] Shear wave elastography is to excite a focused ultrasonic beam through a conventional ultrasonic probe, for example, to emit an acoustic radiation force impulse (ARFI) to the tissue. The acoustic radiation force generated by this pulse signal can form a shear wave source in the tissue and generate a laterally propagating shear wave. By identifying and detecting the shear waves generated inside the tissue and their propagation parameters, and imaging these parameters, the hardness difference of the tissue can be obtained quantitatively and visually. Since the excitation of the shear wave comes from the acoustic radiation force generated by the focused ultrasonic beam and no longer depends on the pressure applied by the operator, the shear wave elastography method has improved in terms of stability and repeatability compared with conventional elastography. Moreover, the quantitatively measured results of the shear wave also make the doctor's diagnosis more objective, and it is a commonly used elastography method by doctors at present.

[0005] During ultrasonic examination, doctors hope to view the physiological state of the tissue to be measured from multiple dimensions, so as to comprehensively analyze the health status of the tissue based on the shear wave measurement results from multiple dimensions. For this reason, there is an urgent need for an ultrasonic examination means that can provide shear wave measurement methods in multiple dimensions. Summary of the Invention

[0006] The embodiments of the present application provide a shear wave measurement result display method and an ultrasonic imaging device, which can arbitrarily switch different shear wave frequencies to observe the shear wave measurement results of tissues at different shear wave frequencies, facilitating doctors to observe the physiological state and health condition of tissues from multiple dimensions.

[0007] In a first aspect of the embodiments of the present application, a shear wave measurement result display method is provided, including:

[0008] Obtain shear wave data of an interested region of a measured object, where the shear wave data is obtained based on echo data of ultrasonic waves that track shear waves generated in the interested region;

[0009] Extract tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data;

[0010] Determine shear wave measurement values of the tissue motion information corresponding to each shear wave frequency;

[0011] Map the shear wave measurement value of the tissue motion information corresponding to the selected frequency into a shear wave image, and display the shear wave image corresponding to the selected frequency; the selected frequency is one of the at least two different shear wave frequencies;

[0012] When receiving an operation by the user to switch the selected frequency to a target frequency, switch the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency;

[0013] where the shear wave image corresponding to the target frequency is obtained by mapping the shear wave measurement value of the tissue motion information corresponding to the target frequency, and the target frequency is any one of the at least two different shear wave frequencies other than the selected frequency.

[0014] In a second aspect of the embodiments of the present application, a shear wave measurement result display method is provided, including:

[0015] Obtain shear wave data of an interested region of a measured object, where the shear wave data is obtained based on echo data of ultrasonic waves that track shear waves generated in the interested region;

[0016] Extract tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data;

[0017] Determine the shear wave measurement value of the tissue motion information corresponding to the selected frequency, and display the shear wave measurement value of the tissue motion information corresponding to the selected frequency, where the selected frequency is any one of the at least two different shear wave frequencies;

[0018] Receive a switching instruction from the user to switch the selected frequency to a target frequency;

[0019] In response to the switching instruction, switch the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency;

[0020] wherein the target frequency is any one of the other shear wave frequencies except the selected frequency among the at least two different shear wave frequencies.

[0021] A fourth aspect of the embodiments of the present application provides an ultrasonic imaging device, including:

[0022] An ultrasonic probe;

[0023] A transmitting / receiving circuit, configured to, when generating a shear wave in an interested area of a measured object, stimulate the ultrasonic probe to transmit ultrasonic waves tracking the shear wave to the interested area and receive echoes of the ultrasonic waves, so as to obtain ultrasonic echo data;

[0024] A processor, configured to process the ultrasonic echo data to obtain shear wave data of the interested area, and execute the shear wave measurement result display method described in the foregoing first aspect or second aspect based on the shear wave data of the interested area.

[0025] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0026] The ultrasonic imaging device obtains shear wave data of an interested area of a measured object, extracts tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data, determines the shear wave measurement value of the tissue motion information corresponding to each shear wave frequency, maps the shear wave measurement value of the tissue motion information corresponding to the selected frequency into a shear wave image, and displays the shear wave image corresponding to the selected frequency. When receiving an operation for switching the selected frequency to a target frequency by a user, switch the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency. A doctor can arbitrarily switch different shear wave frequencies to observe the shear wave measurement results of tissues at different shear wave frequencies, which is convenient for the doctor to observe the physiological state and health condition of tissues from multiple dimensions, and is more conducive to the doctor making an accurate diagnosis by synthesizing the shear wave measurement results of multiple shear wave frequencies, thereby improving the accuracy of tissue ultrasonic examination. In addition, the shear wave measurement result of a single shear wave frequency also has clinical application potential and can provide more research value for the cutting-edge quantitative analysis of shear wave measurement parameters. Description of the Drawings

[0027] Figure 1 It is a schematic block diagram of an ultrasonic imaging device in an embodiment of the present application;

[0028] Figure 2It is a schematic flowchart of a shear wave measurement result display method in an embodiment of the present application;

[0029] Figure 3 It is an exemplary schematic diagram of a display effect of a real-time shear wave elasticity image corresponding to Young's modulus and its scale imaging based on a shear wave frequency in an embodiment of the present application;

[0030] Figure 4 It is an exemplary schematic diagram of a display effect of a frequency switching control on an operation interface in an embodiment of the present application;

[0031] Figure 5 It is an exemplary schematic diagram of a display effect of a real-time shear wave elasticity image corresponding to Young's modulus and its scale imaging based on another shear wave frequency in an embodiment of the present application;

[0032] Figure 6 It is a schematic diagram of a display effect of a frozen elasticity image of Young's modulus E, its scale, and statistical characteristic values of Young's modulus measurement values based on a shear wave frequency in an embodiment of the present application;

[0033] Figure 7 It is an exemplary schematic diagram of another display effect of a frequency switching control on an operation interface in an embodiment of the present application;

[0034] Figure 8 It is a schematic diagram of a display effect of a frozen elasticity image of Young's modulus E, its scale, and statistical characteristic values of Young's modulus measurement values based on another shear wave frequency in an embodiment of the present application;

[0035] Figure 9 It is a schematic diagram of a display effect of a frozen viscosity image of viscosity coefficient Visco, its scale, and statistical characteristic values of viscosity coefficient measurement values based on a shear wave frequency in an embodiment of the present application;

[0036] Figure 10 It is a schematic diagram of a display effect of a frozen viscosity image of viscosity coefficient Visco, its scale, and statistical characteristic values of viscosity coefficient measurement values based on another shear wave frequency in an embodiment of the present application;

[0037] Figure 11 It is a schematic diagram of a display effect of simultaneously displaying a frozen viscosity image of viscosity coefficient, statistical characteristic values of measurement values, a frozen elasticity image of Young's modulus, and statistical characteristic values of measurement values based on a shear wave frequency in an embodiment of the present application;

[0038] Figure 12A schematic diagram of a display effect for simultaneously displaying the frozen viscosity image of the viscosity coefficient, the statistical eigenvalue of the measured value, the frozen elasticity image of the Young's modulus, and the statistical eigenvalue of the measured value based on another shear wave frequency in the embodiment of the present application;

[0039] Figure 13 A schematic diagram of a display effect for a frequency switching control in the embodiment of the present application;

[0040] Figure 14 A schematic diagram of a display effect for the shear wave measurement values of multiple regions of interest of the object under test being displayed in a list form on the result report interface in the embodiment of the present application;

[0041] Figure 15 Another schematic diagram of a display effect for the shear wave measurement values of multiple regions of interest of the object under test being displayed in a list form on the result report interface in the embodiment of the present application;

[0042] Figure 16 Another schematic diagram of a process for the shear wave measurement result display method in the embodiment of the present application. Detailed implementation manners

[0043] The embodiment of the present application provides a shear wave measurement result display method and an ultrasonic imaging device, which can arbitrarily switch different shear wave frequencies to observe the shear wave measurement results of tissues at different shear wave frequencies, facilitating doctors to observe the physiological state and health condition of tissues from multiple dimensions.

[0044] The terms "first", "second", "third", "fourth", etc. (if any) in the description, claims, and drawings of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order different from that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0045] It should be noted that the colors shown in the drawings of the specification are only used for assisting in the elaboration, explanation, or illustration of the embodiments, and the colors shown in the drawings can also be replaced with any other colors, which do not limit the protection scope of the present application.

[0046] Please refer to Figure 1 , the ultrasonic imaging device in the embodiment of the present application includes:

[0047] An ultrasonic probe 110, a transmitting circuit 112, a receiving circuit 114, a processor 118, and a display 120. In addition, a transmit / receive selection switch 122, a beam synthesis module 116, and a memory 124 may also be included.

[0048] The ultrasonic probe 110 can be any probe used for ultrasonic detection, such as a 2D ultrasonic probe and a 3D ultrasonic probe, etc. Among them, the acoustic head part of the ultrasonic probe 110 can be an array composed of multiple array elements. For example, multiple array elements are arranged in a row to form a linear array, or arranged in a two-dimensional matrix to form a planar array, and multiple array elements can also form a convex array. The above-mentioned array elements are used to emit ultrasonic beams according to the excitation electrical signal, or convert the received ultrasonic echoes into electrical signals. Therefore, each array element can be used to realize the mutual conversion between the electrical pulse signal and the ultrasonic beam, so as to emit ultrasonic waves to the target tissue of the human body, and can also be used to receive the echoes of the ultrasonic waves reflected by the tissue.

[0049] The transmitting circuit 112 is used to generate a transmission sequence according to the control of the transmission control module of the processor 118, and the transmission sequence is used to control some or all of the multiple array elements to emit ultrasonic waves to the biological tissue.

[0050] The receiving circuit 114 is used to receive the electrical signals of the ultrasonic echoes from the ultrasonic probe 110, obtain the ultrasonic echo signals, and send these ultrasonic echo signals to the beam synthesis module 116.

[0051] The beam synthesis module 116 is used to perform corresponding processing such as delay, weighted summation beam synthesis, etc. on the signals output by the receiving circuit 114. Since the distances from the ultrasonic receiving points in the measured tissue to the receiving array elements are different, the channel data of the same receiving point output by different receiving array elements have a delay difference, and delay processing is required to align the phases, and the different channel data of the same receiving point are weighted and summed to obtain the data after beam synthesis.

[0052] The processor 118, the processor 118 is connected to the beam synthesis module 116, and is mainly used to perform processing such as detection, signal enhancement, data conversion, and logarithmic compression on the data after beam synthesis to form an ultrasonic image. The ultrasonic image obtained by the processor 118 can be displayed on the display 120, or stored in the memory 124.

[0053] Optionally, the processor 118 may be at least one of an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller, or a microprocessor, so that the processor 118 can control other components in the ultrasonic imaging device 100 to perform the ultrasonic imaging steps in various embodiments of this specification. The processor 118 may be an element or a general term for a control device and a processing device in the ultrasonic imaging device that can control other components of the ultrasonic imaging device to perform various functions in each embodiment.

[0054] The display 120 is connected to the processor 118. The display 120 may be a touch display screen, a liquid crystal display screen, etc.; alternatively, the display 120 may be an independent display such as a liquid crystal display or a television outside the ultrasonic imaging system 100; alternatively, the display 120 may be a display screen of an electronic device such as a smart phone or a tablet computer, etc. Among them, the number of the displays 120 may be one or more.

[0055] In addition to the above structure, the ultrasonic imaging device 100 may further include a human-machine interaction device. Specifically, the human-machine interaction device may be the display 120. If all the functions of the human-machine interaction device are integrated into the display 120, the display 120 can also provide a graphical interface for the user to perform human-machine interaction when displaying the ultrasonic image. One or more controlled objects are set on the graphical interface, and the user is provided with the human-machine interaction device to input operation instructions to control these controlled objects, so as to perform corresponding control operations. For example, an icon is displayed on the graphical interface, and the human-machine interaction device can be used to operate the icon to perform specific functions, such as swapping the position of the image and / or magnifying and displaying a specific area, etc.

[0056] The human-computer interaction device may also be other human-computer interaction devices other than the display 120. For example, the human-computer interaction device may include an input device for detecting user input information, such as instructions for editing and marking an ultrasonic image, or other types of instructions. The input device may include one or a combination of a keyboard, a roller, a trackball, a mobile input device (such as a mobile device with a touch display screen, a mobile phone, etc.), a multi-functional knob, and the like. The human-computer interaction device may also include an output device such as a printer.

[0057] The above ultrasonic imaging device 100 may further include a memory 124 for storing instructions for processing execution, for storing received ultrasonic echo signals, for storing ultrasonic image data, and the like. The memory 124 may be a volatile memory, such as a random access memory (RAM); or a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or a combination of the above types of memories, and provide instructions and data to the processor.

[0058] It should be understood that Figure 1 The components included in the illustrated ultrasonic imaging device 100 are only illustrative, and it may include more or fewer components, and the present invention application does not make corresponding limitations thereto.

[0059] Based on the foregoing Figure 1 The structure of the illustrated ultrasonic imaging device and the functions and roles of each component will be used as the description object of the ultrasonic imaging device to further describe the shear wave measurement result display method executed by the ultrasonic imaging device. Please refer to Figure 2 In an embodiment of the shear wave measurement result display method in the embodiments of the present application, it includes:

[0060] 201. Obtain shear wave data of the region of interest of the object to be measured, where the shear wave data is obtained based on the echo data of the ultrasonic wave tracking the shear wave generated in the region of interest;

[0061] In this embodiment, the object to be measured may be the tissue of the subject, such as tissues with tissue parenchyma such as the liver tissue, pancreas tissue, and kidney tissue of the subject.

[0062] The position of the region of interest can be determined based on the basic ultrasound image of the object under test. Specifically, ultrasonic waves can be emitted to the object under test by an ultrasonic probe, and the ultrasonic echoes of the ultrasonic waves can be received to obtain ultrasonic echo data. Then, the beamforming circuit can perform beamforming processing on the ultrasonic echo data, and then send the beamformed ultrasonic echo data to a processor for relevant image processing, so as to obtain a basic ultrasound image. Among them, according to the different imaging modes required by the user, the processor can perform different processing on the ultrasonic echo data to obtain ultrasonic image data of different modes. Then, through processing such as logarithmic compression, dynamic range adjustment, and digital scan conversion, basic ultrasound images of different modes are formed, such as two-dimensional ultrasound images including B images, C images, etc. The basic ultrasound image can provide relevant information such as lesion morphology and blood flow distribution.

[0063] After that, the position of the region of interest can be determined according to this basic ultrasound image. In one example, determining the position of the region of interest according to the basic ultrasound image specifically includes: outputting the basic ultrasound image and marking the position of the region of interest on the basic ultrasound image. For example, the basic ultrasound image can be displayed on a display, and the user can manually select the region of interest on the basic ultrasound image, and determine the position of the region of interest according to the detected user input instruction.

[0064] In another example, the position of the region of interest can be automatically determined on the basic ultrasound image based on relevant machine recognition algorithms. In other examples, the region of interest can also be obtained by a semi-automatic detection method. For example, first, the position of the region of interest on the basic ultrasound image is automatically detected based on the machine recognition algorithm, and then the user further modifies or corrects it to obtain a more accurate position of the region of interest.

[0065] After determining the region of interest of the object under test, shear waves can be generated in the region of interest, and ultrasonic waves for tracking the shear waves are emitted to the region of interest. The echoes of the ultrasonic waves are received, the echo data of the ultrasonic waves are obtained, and the echo data of the ultrasonic waves are processed into shear wave data reflecting the propagation of the shear waves. Then, the shear wave data can be used to analyze the physiological state and health status of the tissue. Specifically, the parameters reflecting the physiological state and health status of the tissue can be shear wave measurement parameters such as tissue elasticity measurement items and viscosity measurement items obtained based on shear wave measurement means.

[0066] Among them, various methods can be used to generate shear waves within the tissue. For example, shear waves can be generated within the tissue by relying on the movement of body tissues. Such as the movement of body tissues like the body's own breathing movement, blood vessel pulsation, heart beating, etc., which trigger tissue vibration to generate shear waves; or, shear waves can be generated within the tissue by applying an external force vibration to the tissue, such as the external force action methods like the ultrasonic probe slightly pressing the biological tissue, or manual pressing of the biological tissue; shear waves can also be generated within the tissue by emitting an acoustic radiation force impulse (ARFI) into the tissue. Among them, the acoustic radiation force impulse can be focused or unfocused. This embodiment does not limit the method of generating shear waves within the tissue, and any method implemented based on the natural principle of shear wave generation falls within the protection scope of this embodiment.

[0067] 202. Extract tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data;

[0068] Taking the method of generating shear waves within the tissue by emitting an acoustic radiation force impulse as an example, according to the position of the region of interest selected by the above method, acoustic radiation force focused impact can be performed according to a preset pulse sequence. For example, it can be to emit a focused ultrasonic shear wave pushing pulse (Shearwave Pushing pluse, abbreviated as SWP wave), and this pulse signal can trigger the corresponding tissue to generate displacement or strain. And based on the acoustic radiation force principle, a force action will also be generated within the tissue, and then shear waves propagating within the tissue will be generated. Since the physiological state and health condition of the tissue will affect the propagation of shear waves within the tissue, therefore, the physiological state and health condition of the tissue can be examined by observing the change in the propagation of shear waves.

[0069] Specifically, the ultrasonic probe emits a special ultrasonic pushing pulse to the tissue region of the region of interest of the object to be measured, so as to generate the propagation of shear waves within the tissue based on the acoustic radiation force. The length of the ultrasonic pushing pulse is generally greater than 100 us. Since the amplitude of the shear waves generated by the acoustic radiation force impulse itself is relatively small, and the shear waves will rapidly attenuate as they propagate, therefore, in order to enhance the intensity and range of the generated shear waves, multiple ultrasonic pushing pulses are often continuously emitted.

[0070] Next, a series of ultrasonic waves for tracking shear waves are continuously emitted by an ultrasonic probe to the tissue in the region of interest for a period of time (generally dozens of milliseconds), and the ultrasonic echoes are received to obtain ultrasonic echo data, and shear wave data is obtained based on the ultrasonic echo data. The shear wave data is the signal of the echo signal of the shear wave and is used to characterize the vibration state of the tissue when the shear wave propagates in the tissue. The shear wave data obtained in the above manner is a broadband signal, which includes a plurality of tissue motion information within 0 to 1000 Hz. Each tissue motion information of the shear wave data can be regarded as a signal characterizing the vibration state of the tissue caused by a shear wave of a certain frequency.

[0071] Specifically, the processor of the ultrasonic imaging device can calculate the vibration state of the tissue when the shear wave propagates in the tissue based on the above ultrasonic echo data. The shear wave data is a signal characterizing the vibration state of the tissue over a period of time. According to the wave characteristics, when the shear wave propagates through a certain position in the tissue, the tissue at the corresponding position will vibrate. When the shear wave propagates away from a certain position, the tissue at that position will return to its original state. Therefore, by performing a correlation comparison between the ultrasonic echoes obtained at different times, the motion information of the tissue over a period of time can be obtained. Among them, the motion information can be the displacement of the tissue relative to the reference time, the motion speed of the tissue, the motion acceleration of the tissue, the strain of the tissue, etc., or the data obtained after further processing such as filtering, differentiation, and integration based on the above variables.

[0072] Among them, the correlation comparison can be to perform a comparison calculation between the ultrasonic echo data obtained at adjacent different times, or to perform a comparison calculation between the ultrasonic echoes at different times and the echo data at the same reference time. The algorithms for correlation comparison can include general algorithms for conventional tissue displacement detection, such as the cross-correlation comparison algorithm based on block matching, the calculation method based on Doppler frequency shift, the method based on phase shift detection, etc. The embodiments of the present application do not limit the specific algorithms used to detect tissue motion information.

[0073] After that, the tissue motion information caused by the shear wave at different times is summarized, and the vibration waveform of the shear wave data can be observed. Of course, the vibration waveform of the shear wave data can also be observed by summarizing the above-mentioned other tissue motion information over a period of time, such as by plotting a tissue displacement-time curve, etc.

[0074] 203. Determine the shear wave measurement value of the tissue motion information corresponding to each shear wave frequency;

[0075] The shear wave measurement value can be the measurement value of the shear wave measurement parameter obtained by processing the tissue motion information corresponding to each shear wave frequency based on any shear wave measurement method. For example, the shear wave measurement value can be a shear wave elasticity measurement value, a shear wave viscosity measurement value, etc. When obtaining the shear wave elasticity measurement value, the measurement value of the shear wave elasticity can be obtained by processing the tissue motion information corresponding to each shear wave frequency based on the shear wave elasticity measurement method, such as including shear wave propagation speed, Young's modulus, shear modulus, etc.

[0076] Similarly, when obtaining the shear wave viscosity measurement value, the measurement value of the shear wave viscosity can be obtained by processing the tissue motion information corresponding to each shear wave frequency based on the shear wave viscosity measurement method, such as including measurement values of viscosity-related measurement items related to solids, fluids, or fluid-solid coupling, such as viscosity coefficient, dispersion coefficient, fluidity parameter, etc.

[0077] Exemplarily, various methods used in conventional shear wave elasticity measurements can be adopted to calculate the propagation speed of the shear wave. For example, the propagation speed of the shear wave can be calculated by calculating the arrival times of the shear wave at different positions separated by a certain distance in the tissue. Specifically, the displacement-time curves corresponding to two different positions in the tissue can be compared by cross-correlation to obtain the time difference between them. This time difference corresponds to the propagation time of the shear wave between these two positions, and the ratio of the distance between the two positions to the propagation time is the propagation speed of the shear wave. Alternatively, the propagation speed of the shear wave can also be calculated by the inversion of the wave equation, etc. The embodiments of the present application do not limit the calculation method of the shear wave propagation speed.

[0078] 204. Map the shear wave measurement value of the tissue motion information corresponding to the selected frequency into a shear wave image, and display the shear wave image corresponding to the selected frequency;

[0079] After obtaining the shear wave measurement value corresponding to each shear wave frequency, the shear wave measurement value can be mapped into a shear wave image and displayed. The ultrasonic imaging device can determine the currently selected frequency to be displayed, which is one of the at least two different shear wave frequencies described above, and map the shear wave measurement value of the tissue motion information corresponding to the selected frequency into a shear wave image, and display the shear wave image corresponding to the selected frequency.

[0080] For example, if the currently selected shear wave frequency to be displayed is 200 Hz, the ultrasonic imaging device acquires the shear wave measurement value corresponding to this frequency, maps its shear wave measurement value into a shear wave image, and displays the shear wave image.

[0081] In this embodiment, the execution order between step 203 and step 204 is not limited. For example, before determining the selected frequency, the shear wave measurement value corresponding to the selected frequency can be processed based on the tissue motion information corresponding to the selected frequency, and the shear wave measurement value can be mapped to a shear wave image. When determining the selected frequency, the shear wave image that has been processed previously can be directly obtained; alternatively, when determining the selected frequency, the shear wave measurement value corresponding to the selected frequency can be processed based on the tissue motion information corresponding to the selected frequency, and the shear wave measurement value can be mapped to a shear wave image; or alternatively, before determining the selected frequency, the shear wave measurement value corresponding to the selected frequency can be processed based on the tissue motion information corresponding to the selected frequency, and when determining the selected frequency, its shear wave measurement value can be mapped to a shear wave image. This embodiment does not limit the order of obtaining the shear wave measurement value corresponding to the selected frequency and its shear wave image.

[0082] 205. When receiving an operation from the user to switch the selected frequency to a target frequency, switch the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency;

[0083] In this embodiment, the user can switch different shear wave frequencies to view the changes in shear wave imaging of tissues at different shear wave frequencies. Therefore, the user can input an operation to switch the selected frequency to a target frequency to the ultrasonic imaging device. The ultrasonic imaging device receives this operation and responds by switching the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency. Among them, the shear wave image corresponding to the target frequency is mapped from the shear wave measurement value of the tissue motion information corresponding to the target frequency, and the target frequency is any other shear wave frequency except the selected frequency among the above-mentioned at least two different shear wave frequencies.

[0084] Continuing with the above example, if the shear wave image corresponding to the shear wave frequency of 200 Hz is currently displayed, when the user switches to the shear wave frequency of 400 Hz, the shear wave image corresponding to the shear wave frequency of 400 Hz is obtained, and the currently displayed shear wave image corresponding to the shear wave frequency of 200 Hz is switched to the shear wave image corresponding to the shear wave frequency of 400 Hz.

[0085] Among them, the shear wave image corresponding to the target frequency is obtained through processing, and this operation can be completed after step 202. For example, before the user switches the shear wave frequency, the shear wave measurement values corresponding to the target frequency are obtained based on the tissue motion information corresponding to the target frequency, and the shear wave measurement values are mapped to a shear wave image. When the user switches the shear wave frequency, the previously processed shear wave image can be directly obtained; alternatively, when the user switches the shear wave frequency, the shear wave measurement values corresponding to the target frequency are obtained based on the tissue motion information corresponding to the target frequency, and the shear wave measurement values are mapped to a shear wave image; or it can also be that before the user switches the shear wave frequency, the shear wave measurement values corresponding to the target frequency are obtained based on the tissue motion information corresponding to the target frequency, and when the user switches the shear wave frequency, the shear wave measurement values are mapped to a shear wave image. This embodiment does not limit the order of obtaining the shear wave measurement values corresponding to the target frequency and their shear wave images.

[0086] Therefore, in this embodiment, the ultrasonic imaging device obtains the shear wave data of the region of interest of the object to be measured, extracts the tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data, determines the shear wave measurement values of the tissue motion information corresponding to each shear wave frequency, maps the shear wave measurement values of the tissue motion information corresponding to the selected frequency to a shear wave image, and displays the shear wave image corresponding to the selected frequency. When receiving the operation of the user switching the selected frequency to the target frequency, the shear wave image corresponding to the selected frequency is switched and displayed to the shear wave image corresponding to the target frequency. The doctor can arbitrarily switch different shear wave frequencies to observe the shear wave measurement results of the tissue at different shear wave frequencies, which is convenient for the doctor to observe the physiological state and health condition of the tissue from multiple dimensions, and is more conducive to the doctor making an accurate diagnosis by synthesizing the shear wave measurement results of multiple shear wave frequencies, improving the accuracy of tissue ultrasonic examination. In addition, the shear wave measurement results of a single shear wave frequency also have clinical application potential, and can provide more research value for the quantitative analysis of shear wave measurement parameters at the forefront.

[0087] Based on Figure 2 In the embodiment shown, when the ultrasonic imaging device receives the operation of the user switching the selected frequency to the target frequency, an optional implementation manner may be that the ultrasonic imaging device displays an operation interface, the operation interface includes a frequency switching control, the frequency switching control is associated with at least two different shear wave frequencies, the user can trigger the frequency switching control to switch the selected frequency to the target frequency, then the ultrasonic imaging device receives the trigger operation, recognizes the trigger operation as switching the selected frequency to the target frequency associated with the frequency switching control, and then in response to the switching operation, switches the displayed shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency.

[0088] Based on Figure 2In the illustrated embodiment, in a preferred implementation, the shear wave measurement value for determining the tissue motion information corresponding to each shear wave frequency may be the shear wave elasticity measurement value of the tissue motion information corresponding to each shear wave frequency calculated according to a preset algorithm for shear wave elasticity measurement; and / or, the shear wave viscosity measurement value of the tissue motion information corresponding to each shear wave frequency calculated according to a preset algorithm for shear wave viscosity measurement.

[0089] Furthermore, after mapping the shear wave measurement value to a shear wave image, map the shear wave elasticity measurement value corresponding to the selected frequency to a shear wave elasticity image; and / or, map the shear wave viscosity measurement value corresponding to the selected frequency to a shear wave viscosity image.

[0090] Therefore, in an alternative manner, displaying the shear wave image corresponding to the selected frequency may be calculating the shear wave elasticity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave elasticity measurement, mapping the shear wave elasticity measurement value corresponding to the selected frequency to a shear wave elasticity image, and displaying the shear wave elasticity image corresponding to the selected frequency on the measurement result interface. Furthermore, after the selected frequency is switched to the target frequency, the shear wave elasticity image corresponding to the selected frequency can be switched and displayed to the shear wave elasticity image corresponding to the target frequency on the measurement result interface. Among them, the shear wave elasticity image corresponding to the target frequency is obtained by mapping the shear wave elasticity measurement value corresponding to the target frequency, and the shear wave elasticity measurement value of the target frequency is calculated according to a preset algorithm for shear wave elasticity measurement for the tissue motion information corresponding to the target frequency.

[0091] The selected frequency can be preset in advance. It can be the shear wave frequency that the user preset to observe, or the shear wave frequency that the ultrasound imaging device defaults to perform ultrasound imaging when it is powered on, or the shear wave frequency that the ultrasound imaging device is default set when it leaves the factory. Specifically, it is not limited here.

[0092] The setting and switching of the shear wave frequency can be applied in the real-time display scenario of the ultrasound image. The real-time display scenario of the ultrasound image means that the ultrasound imaging device collects a shear wave data in real time at every preset time interval and displays the corresponding shear wave image according to the shear wave data in real time. Therefore, the shear wave image can be refreshed and displayed in real time during this process, and multiple frames of real-time shear wave images are stored until the user freezes the image.

[0093] As Figure 3 shown, when starting the data acquisition of the ultrasound imaging, the basic ultrasound image can be displayed (such as Figure 3the ultrasonic image on the left), and determine the region of interest in the basic ultrasonic image, and collect the shear wave data of this region of interest in real time. "SW-F 0" (shear wave frequency) on the left side of the basic ultrasonic image indicates that the shear wave frequency at this time is 0 Hz. If it is determined that the selected frequency of the current ultrasonic imaging is 0 Hz, then a real-time shear wave elasticity image corresponding to the 0 Hz shear wave frequency is generated according to the real-time collected shear wave data, as Figure 3 shown in the ultrasonic image on the right, showing the real-time shear wave elasticity image corresponding to the Young's modulus, and a corresponding scale is displayed in the upper left corner of the real-time shear wave elasticity image.

[0094] In addition, when the real-time shear wave image corresponding to the 0 Hz shear wave frequency is currently displayed, the shear wave frequency can be switched through the frequency switching control. The user can Figure 4 in the operation interface shown, switch the shear wave frequency by triggering the frequency switching control in this operation interface. For example, currently Figure 4 the frequency switching control circled by the red frame shows that the current shear wave frequency is 0 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz. After collecting the real-time shear wave data, the shear wave image will be imaged at a frequency of 400 Hz. The visual effect presented is that Figure 3 the real-time shear wave elasticity image corresponding to the 0 Hz shear wave frequency displayed will be switched to the real-time shear wave elasticity image corresponding to the 400 Hz shear wave frequency as shown in Figure 5 shown. "SW-F400" on the left side of the basic ultrasonic image indicates that the shear wave frequency at this time is 400 Hz.

[0095] Similarly, after switching to the 400 Hz shear wave frequency, the user can click the ">" button in the control to increase the shear wave frequency, or click the "<" button in the control to decrease the shear wave frequency.

[0096] Therefore, by setting or switching the shear wave frequency corresponding to the real-time shear wave image, the user can easily obtain the measurement results of the shear wave frequency they want to observe, greatly facilitating the user's operation and improving the usability of the ultrasonic imaging device.

[0097] The setting and switching of the shear wave frequency can also be applied to the frozen display scenario of the ultrasonic image, that is, the user can freeze the shear wave elasticity image at any time during the display of the real-time shear wave elasticity image. When freezing the shear wave elasticity image, for the currently frozen shear wave elasticity image, the shear wave elasticity measurement value corresponding to the selected frequency used to process the currently frozen shear wave elasticity image can be displayed on the measurement result interface, so that the user can perform quantitative analysis on the tissue shear wave elasticity measurement in combination with the shear wave elasticity measurement value.

[0098] For example, when the real-time shear wave elasticity image corresponding to a 200 Hz shear wave frequency is currently displayed and the user freezes the shear wave image, as Figure 6 shown, the frozen Young's modulus image and the scale corresponding to the Young's modulus image can be displayed on the right side of the measurement result interface. "SW-F 200" on the left side of the scale indicates that the shear wave frequency at this time is 200 Hz. Moreover, the measured value of Young's modulus or the statistical characteristic values of the measured value of Young's modulus used to process the current frozen shear wave elasticity image, including statistical characteristic values such as mean, max, min, and standard deviation SD, are displayed on the left side of the measurement result interface.

[0099] In addition, the user can also switch the shear wave frequency corresponding to the frozen shear wave image. When receiving the operation of the user switching the selected frequency to the target frequency, in addition to switching the frozen shear wave elasticity image corresponding to the selected frequency to the frozen shear wave elasticity image corresponding to the target frequency, the ultrasonic imaging device can also switch and display the shear wave elasticity measured value corresponding to the selected frequency to the shear wave elasticity measured value corresponding to the target frequency on the measurement result interface.

[0100] For example, based on Figure 6 the example shown, when the frozen elasticity image corresponding to a 200 Hz shear wave frequency and its corresponding shear wave elasticity measured value are currently displayed, the shear wave frequency can be switched through the frequency switching control. The user can, in Figure 7 the operation interface shown, trigger the frequency switching control in the operation interface to switch the shear wave frequency. For example, the frequency switching control circled by the current Figure 7 red frame shows that the current shear wave frequency is 200 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz, then Figure 6 the frozen elasticity image corresponding to the 200 Hz shear wave frequency and its corresponding shear wave elasticity measured value displayed will be switched to the frozen elasticity image corresponding to a 400 Hz shear wave frequency and its corresponding shear wave elasticity measured value as Figure 8 shown. "SW-F 400" on the left side of the scale indicates that the shear wave frequency at this time is 400 Hz.

[0101] Therefore, by displaying or switching the shear wave elasticity measured values corresponding to different shear wave frequencies, the user can understand the overall level of the elastic measurement results of the region of interest at different shear wave frequencies, provide more reference data for the diagnosis of tissue health status, and also facilitate the user to perform quantitative analysis on the shear wave elasticity measurement of the tissue in combination with the shear wave elasticity measured value.

[0102] In another alternative, to display the shear wave image corresponding to the selected frequency, it may be to calculate the shear wave viscosity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave viscosity measurement, map the shear wave viscosity measurement value corresponding to the selected frequency into a shear wave viscosity image, and display the shear wave viscosity image corresponding to the selected frequency on the measurement result interface. Furthermore, after the selected frequency is switched to the target frequency, the shear wave viscosity image corresponding to the selected frequency can be switched and displayed as the shear wave viscosity image corresponding to the target frequency on the measurement result interface. Among them, the shear wave viscosity image corresponding to the target frequency is obtained by mapping the shear wave viscosity measurement value corresponding to the target frequency, and the shear wave viscosity measurement value of the target frequency is calculated according to the preset algorithm for shear wave viscosity measurement for the tissue motion information corresponding to the target frequency.

[0103] The setting and switching of the shear wave frequency can be applied to the real-time display scenario of ultrasonic images. For the real-time display and real-time refresh of the shear wave viscosity image, when starting the data acquisition of ultrasonic imaging, the basic ultrasonic image can be displayed, and the region of interest can be determined on the basic ultrasonic image, and the shear wave data of this region of interest can be acquired in real time. If it is determined that the selected frequency of the current ultrasonic imaging is 0 Hz, then a real-time shear wave viscosity image corresponding to the 0 Hz shear wave frequency is generated according to the real-time acquired shear wave data, such as displaying the real-time shear wave viscosity image corresponding to the viscosity coefficient, and a corresponding scale is displayed in the upper left corner of the real-time shear wave viscosity image.

[0104] When currently displaying the real-time shear wave image corresponding to the 0 Hz shear wave frequency, the shear wave frequency can also be switched through the frequency switching control to display the real-time shear wave images corresponding to other shear wave frequencies. For example, the user can Figure 4 in the operation interface shown, switch the shear wave frequency by triggering the frequency switching control in this operation interface. For example, the current Figure 4 shown frequency switching control shows that the current shear wave frequency is 0 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz. Then, after acquiring the real-time shear wave data, the shear wave image will be imaged at a frequency of 400 Hz. The visual effect presented is that the current real-time shear wave viscosity image corresponding to the 0 Hz shear wave frequency will be switched to the real-time shear wave viscosity image corresponding to the 400 Hz shear wave frequency.

[0105] Therefore, by setting or switching the shear wave frequency corresponding to the real-time shear wave image, the user can easily obtain the measurement results of the shear wave frequency they want to observe, which greatly facilitates the user's operation and improves the usability of the ultrasonic imaging device.

[0106] The setting and switching of the shear wave frequency can also be applied to the frozen display scenario of ultrasonic images, that is, during the display of real-time shear wave viscosity images, the user can freeze the shear wave viscosity image at any time. When freezing the shear wave viscosity image, for the currently frozen shear wave viscosity image, the shear wave viscosity measurement value corresponding to the selected frequency used to process the currently frozen shear wave viscosity image can be displayed on the measurement result interface, so that the user can perform quantitative analysis on the tissue shear wave viscosity measurement in combination with the shear wave viscosity measurement value.

[0107] For example, when the real-time shear wave viscosity image corresponding to a shear wave frequency of 200 Hz is currently displayed, when the user freezes the shear wave image, as Figure 9 shown, the frozen viscosity coefficient (Visco) image and the scale corresponding to the viscosity coefficient image can be displayed on the right side of the measurement result interface. "SW-F 200" on the left side of the scale indicates that the shear wave frequency at this time is 200 Hz. And on the left side of the measurement result interface, the viscosity coefficient measurement value used to process the currently frozen viscosity coefficient image or the statistical characteristic values of the viscosity coefficient measurement value are displayed, including statistical characteristic values such as mean, max, min, and standard deviation SD.

[0108] The scale corresponding to the viscosity coefficient image is used to represent the change trend of the measurement values of the viscosity coefficients corresponding to different chromaticities in the region of interest. For example, the darker the chromaticity, the closer it is to dark red, indicating that the viscosity coefficient at this position is smaller, that is, closer to 0.00 Pa·s; the lighter the chromaticity, the closer it is to white, indicating that the viscosity coefficient at this position is larger, that is, closer to 8.00 Pa·s. Therefore, the size of the viscosity coefficient at each position can be determined according to the chromaticity at each position in the region of interest of the viscosity image and in combination with the meaning represented by the scale, and then the health status of the tissue region corresponding to the region of interest can be determined.

[0109] In addition, the user can also switch the shear wave frequency corresponding to the frozen shear wave image. When receiving the operation of the user to switch the selected frequency to the target frequency, in addition to switching the frozen shear wave viscosity image corresponding to the selected frequency to the frozen shear wave viscosity image corresponding to the target frequency, the ultrasonic imaging device can also switch the display of the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave viscosity measurement value corresponding to the target frequency on the measurement result interface.

[0110] For example, based on Figure 9 the example shown, when the frozen viscosity image corresponding to a shear wave frequency of 200 Hz and its corresponding shear wave viscosity measurement value are currently displayed, the shear wave frequency can be switched through the frequency switching control. The user can Figure 7 switch the shear wave frequency by triggering the frequency switching control in the operation interface shown in Figure 7The frequency switching control indicated by the red frame shows that the current shear wave frequency is 200 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz, then Figure 9 the frozen viscosity image corresponding to the 200 Hz shear wave frequency shown and its corresponding shear wave viscosity measurement value will be switched to those corresponding to the 400 Hz shear wave frequency as shown in Figure 10 Figure. "SW-F 400" on the left side of the scale indicates that the shear wave frequency at this time is 400 Hz.

[0111] Therefore, by displaying or switching the shear wave viscosity measurement values corresponding to different shear wave frequencies, the user can understand the overall level of the viscosity measurement results of the region of interest at different shear wave frequencies, providing more reference data for the diagnosis of tissue health status, and also facilitating the user to make quantitative analysis of the shear wave viscosity measurement of the tissue in combination with the shear wave viscosity measurement values.

[0112] In another alternative method, displaying the shear wave image corresponding to the selected frequency may be to calculate the shear wave elasticity measurement value of the tissue motion information corresponding to the selected frequency according to the preset algorithm of shear wave elasticity measurement, map the shear wave elasticity measurement value corresponding to the selected frequency to a shear wave elasticity image, and, calculate the shear wave viscosity measurement value of the tissue motion information corresponding to the selected frequency according to the preset algorithm of shear wave viscosity measurement, map the shear wave viscosity measurement value corresponding to the selected frequency to a shear wave viscosity image, and simultaneously display the shear wave elasticity image and the shear wave viscosity image corresponding to the selected frequency on the measurement result interface. Furthermore, after the selected frequency is switched to the target frequency, the shear wave elasticity image and the shear wave viscosity image corresponding to the selected frequency can be switched and displayed as the shear wave elasticity image and the shear wave viscosity image corresponding to the target frequency on the measurement result interface.

[0113] Among them, the shear wave elasticity image corresponding to the target frequency is obtained by mapping the shear wave elasticity measurement value corresponding to the target frequency, and the shear wave elasticity measurement value of the target frequency is calculated according to the preset algorithm of shear wave elasticity measurement for the tissue motion information corresponding to the target frequency.

[0114] The shear wave viscosity image corresponding to the target frequency is obtained by mapping the shear wave viscosity measurement value corresponding to the target frequency, and the shear wave viscosity measurement value of the target frequency is calculated according to the preset algorithm of shear wave viscosity measurement for the tissue motion information corresponding to the target frequency.

[0115] The setting and switching of shear wave frequency can be applied to the real-time display scenario of ultrasonic images. For the real-time display and real-time refresh of shear wave elasticity images and shear wave viscosity images, when starting the data acquisition of ultrasonic imaging, the basic ultrasonic image can be displayed, and the region of interest can be determined on the basic ultrasonic image, and the shear wave data of this region of interest can be acquired in real time. If it is determined that the selected frequency of the current ultrasonic imaging is 0 Hz, then the real-time shear wave elasticity image and real-time shear wave viscosity image corresponding to the 0 Hz shear wave frequency are generated according to the real-time acquired shear wave data. For example, the real-time shear wave elasticity image corresponding to Young's modulus and the real-time shear wave viscosity image corresponding to the viscosity coefficient are simultaneously displayed on the measurement result interface, and the corresponding scale is displayed in the upper left corner of the real-time shear wave elasticity image, and the corresponding scale is displayed in the upper left corner of the real-time shear wave viscosity image.

[0116] When currently displaying the real-time shear wave image corresponding to the 0 Hz shear wave frequency, the shear wave frequency can also be switched through the frequency switching control to display the real-time shear wave image corresponding to other shear wave frequencies. For example, the user can Figure 4 in the operation interface shown, switch the shear wave frequency by triggering the frequency switching control in this operation interface. For example, currently Figure 4 the frequency switching control shown displays that the current shear wave frequency is 0 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz. After acquiring the real-time shear wave data, the shear wave image will be imaged at a frequency of 400 Hz. The visual effect presented is that the real-time shear wave elasticity image and viscosity image corresponding to the currently displayed 0 Hz shear wave frequency will be switched to the real-time shear wave elasticity image and viscosity image corresponding to the 400 Hz shear wave frequency.

[0117] Therefore, by setting or switching the shear wave frequency corresponding to the real-time shear wave image, the user can easily obtain the measurement results of the shear wave frequency they want to observe, greatly facilitating the user's operation and improving the usability of the ultrasonic imaging device.

[0118] The setting and switching of shear wave frequency can also be applied to the frozen display scenario of ultrasonic images, that is, the user can freeze the shear wave image at any time during the display of the real-time shear wave image. When freezing the shear wave elasticity image and shear wave viscosity image, for the currently frozen shear wave elasticity image and shear wave viscosity image, the shear wave elasticity measurement value corresponding to the selected frequency used to process the currently frozen shear wave elasticity image can be displayed on the measurement result interface, and the shear wave viscosity measurement value corresponding to the selected frequency used to process the currently frozen shear wave viscosity image can be displayed, so that the user can perform quantitative analysis on the tissue shear wave elasticity measurement in combination with the shear wave elasticity measurement value, and perform quantitative analysis on the tissue shear wave viscosity measurement in combination with the shear wave viscosity measurement value.

[0119] For example, when the real-time shear wave elasticity image and the real-time shear wave viscosity image corresponding to a 200 Hz shear wave frequency are currently displayed, when the user freezes the shear wave image, as Figure 11 shown, the frozen Young's modulus image and the scale corresponding to the Young's modulus image, the frozen viscosity coefficient image and the scale corresponding to the viscosity coefficient image can be displayed on the right side of the measurement result interface. "SW-F 200" on the left side of the scale indicates that the shear wave frequency at this time is 200 Hz. Moreover, on the left side of the measurement result interface, the Young's modulus measurement value used to process the current frozen shear wave elasticity image or the statistical characteristic value of the Young's modulus measurement value, the viscosity coefficient measurement value used to process the current frozen viscosity coefficient image or the statistical characteristic value of the viscosity coefficient measurement value are displayed, including statistical characteristic values such as mean, max, min, and standard deviation SD.

[0120] In addition, the user can also switch the shear wave frequency corresponding to the frozen shear wave image. When receiving the operation of the user switching the selected frequency to the target frequency, in addition to switching the frozen shear wave elasticity image corresponding to the selected frequency to the frozen shear wave elasticity image corresponding to the target frequency and switching the frozen shear wave viscosity image corresponding to the selected frequency to the frozen shear wave viscosity image corresponding to the target frequency, the ultrasonic imaging device can also switch and display the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the target frequency on the measurement result interface.

[0121] For example, based on Figure 11 the example shown, when the frozen elasticity image corresponding to a 200 Hz shear wave frequency and its corresponding shear wave elasticity measurement value, the frozen viscosity image and its corresponding shear wave viscosity measurement value are currently displayed, the shear wave frequency can be switched through the frequency switching control. The user can Figure 7 on the operation interface shown, trigger the frequency switching control in the operation interface to switch the shear wave frequency. For example, the frequency switching control circled by the current Figure 7 red frame shows that the current shear wave frequency is 200 Hz. The user can click the ">" button in the control to increase the shear wave frequency. Suppose the user clicks this button and switches to 400 Hz, then Figure 11 the frozen elasticity image corresponding to the 200 Hz shear wave frequency and its corresponding shear wave elasticity measurement value, the frozen viscosity image and its corresponding shear wave viscosity measurement value displayed will be switched to the frozen elasticity image corresponding to the 400 Hz shear wave frequency and its corresponding shear wave elasticity measurement value, the frozen viscosity image and its corresponding shear wave viscosity measurement value as Figure 12 shown.

[0122] Therefore, by displaying or switching the shear wave measurement values corresponding to different shear wave frequencies, the user can understand the overall level of the shear wave measurement results in the region of interest at different shear wave frequencies, providing more reference data for the diagnosis of tissue health status, and also facilitating the user to conduct quantitative analysis of the shear wave elasticity measurement of the tissue in combination with the shear wave measurement values.

[0123] Moreover, through the method of simultaneous screen display, doctors can view the measurement results of multiple different shear wave frequencies on the same screen, which is convenient for doctors to compare the similarities and differences of the measurement results of different shear wave frequencies on the same interface, and also more convenient for doctors to make accurate diagnoses in combination with the measurement results of multiple different shear wave frequencies.

[0124] Figure 4 or Figure 7 The displayed frequency switching control, with multiple shear wave frequencies associated with it integrated on the same control, allows the user to click on this switching control to set and switch the shear wave frequencies. In addition to this display method, the switching control can also be displayed in other ways. For example, Figure 13 the multiple shear wave frequencies associated with the shown frequency switching control can be displayed separately expanded, that is, each shear wave frequency corresponds to a button, and the user can click on the button corresponding to the shear wave frequency to be imaged to set and switch the shear wave frequencies. In addition, it can also be that the multiple shear wave frequencies associated with the frequency switching control are displayed on the horizontal axis, and the user can drag the positioning marker on the horizontal axis to the shear wave frequency to be set to achieve the setting and switching of the shear wave frequencies. This embodiment does not limit the display method of the frequency switching control.

[0125] In addition, the shear wave frequencies described in this embodiment can be multiple discrete values within a shear wave frequency range, or continuous values within this shear wave frequency range, which is not limited here.

[0126] The above takes the operation interface as the UI interface as an example to introduce the display method of the frequency switching control. In addition, the operation interface can also be a physical operation interface, and the frequency switching control can be a physical button in the physical operation interface. Multiple shear wave frequencies can also be integrated on the same physical button, and operating this physical button can increase or decrease the shear wave frequency; or multiple shear wave frequencies can be laid out separately on multiple physical buttons; or it can be configured as a knob, and the user rotates the knob to increase or decrease the shear wave frequency, which is not limited here.

[0127] In this embodiment, the shear wave elasticity measurement values displayed on the measurement result interface include at least one of the maximum value, minimum value, mean value, and standard deviation of the shear wave elasticity measurement values of multiple points or multiple sub-regions in the region of interest, and may also be statistical characteristic values such as variance, median value, and mode. The shear wave viscosity measurement values displayed on the measurement result interface include at least one of the maximum value, minimum value, mean value, and standard deviation of the shear wave viscosity measurement values of multiple points or multiple sub-regions in the region of interest, and may also be statistical characteristic values such as variance, median value, and mode.

[0128] Among them, the multiple points or multiple sub-regions may be multiple points or multiple sub-regions in the preferred region containing tissue parenchyma in the region of interest. As Figure 6 , 8 As shown in any one of FIGS. 1 to 12, a preferred region is also circled in the region of interest, and this preferred region contains tissue parenchyma (such as liver parenchyma, pancreatic parenchyma, kidney parenchyma, etc.). Moreover, this preferred region can exclude factors that may affect or interfere with the propagation of shear waves, such as blood vessels and fat layers, so as to make the measurement of the shear wave measurement values in this preferred region more accurate and make the shear wave imaging more precise.

[0129] Similarly, the measurement result interface can also display the depth of the region of interest and / or this preferred region, and can also display the diameter of this preferred region. As Figure 6 , 8 As shown in any one of FIGS. 1 to 12, below the statistical characteristic values of the elasticity measurement value and / or viscosity measurement value are displayed, the depth of the region of interest and the diameter of this preferred region are displayed, and the user can determine whether the depth of the currently selected region of interest or the diameter of the preferred region is appropriate.

[0130] In this embodiment, the shear wave elasticity measurement values include one or more of shear wave propagation speed, Young's modulus, and shear modulus, or include other measurement items characterizing tissue elasticity. The shear wave viscosity measurement values include one or more of viscosity coefficient, dispersion coefficient, and fluidity parameter, or include other measurement items characterizing tissue viscosity.

[0131] Among them, when calculating the shear wave elasticity measurement value of the tissue motion information corresponding to each shear wave frequency according to the preset algorithm of shear wave elasticity measurement, the shear wave propagation speed of the tissue motion information corresponding to each shear wave frequency can be calculated. Furthermore, for each shear wave frequency, the elastic modulus corresponding to this shear wave frequency is calculated according to the tissue density of the measured object and the shear wave propagation speed corresponding to this shear wave frequency, and this elastic modulus includes Young's modulus and / or shear modulus.

[0132] For example, after obtaining the propagation speed of the shear wave, according to Young's modulus E = 3*ρVs 2 , or shear modulus G = ρVs 2Using equations such as these, various physical quantities reflecting tissue hardness can be further calculated, where ρ is the tissue density. The greater the propagation speed Vs of the shear wave, or the greater the Young's modulus E, or the greater the shear modulus G, the higher the tissue hardness is represented.

[0133] When calculating the shear wave viscosity measurement value of the tissue motion information corresponding to each shear wave frequency according to a preset algorithm for shear wave viscosity measurement, the shear wave propagation speed corresponding to the tissue motion information of each shear wave frequency can be calculated, and for each shear wave frequency, the shear wave viscosity measurement value corresponding to that shear wave frequency can be obtained based on the shear wave propagation speed corresponding to that shear wave frequency and that shear wave frequency.

[0134] For example, by filtering the detected broadband shear wave, the shear wave propagation speeds of different frequencies can be obtained. Using different models such as the Voigt model and the linear fitting model based on the differences between the shear wave propagation speeds of different frequencies, different viscoelastic data of the tissue can be calculated.

[0135] For example, the calculation models for different viscosity measurement items are as follows:

[0136] Viscosity coefficient: Obtained by using the Voigt model: where V is the shear wave velocity, μ is the tissue elastic modulus, f is the shear wave frequency, ρ is the tissue density, η is the tissue viscosity coefficient, with the unit of Pa·s.

[0137] Dispersion coefficient: Obtained by using the linear fitting model: V = slope*f + a, where V is the shear wave velocity, f is the shear wave frequency, a is a constant, and slope is the dispersion coefficient, with the unit of

[0138] Flowability parameter: A parameter mainly reflecting the hydrodynamic properties, obtained by calculating through the KVFD model: where V is the shear wave velocity, ρ is the tissue density, μ R and μ I are the real part and the imaginary part of the shear modulus respectively, and can be expressed by the elastic modulus and the flowability parameter: μ0 where is the elastic modulus, μ α is the required flowability parameter, with the unit of Pa·s α , and α is a dimensionless real number between 0 and 1, reflecting the fluid properties of the tissue.

[0139] After calculating the measurement values of the corresponding shear wave viscoelasticity through various algorithm models, normalizing the obtained measurement values of various viscoelasticity measurements and performing grayscale, pseudocolor, or color mapping, the shear wave images corresponding to various viscoelasticity measurements can be obtained.

[0140] Of course, in addition to the above three calculation models, the algorithms or models for the viscosity measurement terms can also be obtained by other algorithms and models. For example, it can be a calculation model customized by the user. This embodiment does not limit the algorithms or calculation models for each viscosity measurement term.

[0141] In this embodiment, mapping the shear wave measurement values of the tissue motion information corresponding to the selected frequency to a shear wave image may be mapping the shear wave measurement values corresponding to the selected frequency to a shear wave image with a target display effect, and displaying the shear wave image with the target display effect. Among them, the target display effect includes any one or more of grayscale, pseudocolor, and color display effects. Of course, it may also include other visualization display effects that can characterize the distribution of shear wave measurement values in the region of interest. Similarly, for the mapping of the shear wave image of the target frequency, the above method can also be used to obtain it.

[0142] Based on Figure 2 In a preferred implementation manner of the shown embodiment, the shear wave measurement values corresponding to multiple shear wave frequencies can also be displayed on the result report interface. Among them, the shear wave measurement value corresponding to each shear wave frequency is a statistical characteristic value of the shear wave measurement values of multiple points or multiple sub-regions in the region of interest, and the statistical characteristic value includes one or more of the maximum value, minimum value, mean value, and standard deviation.

[0143] Among them, the shear wave measurement value corresponding to each shear wave frequency is a statistical characteristic value of the shear wave propagation speed of multiple points or multiple sub-regions in the region of interest. Furthermore, the ultrasonic imaging device can calculate the shear wave elasticity measurement value and / or shear wave viscosity measurement value corresponding to each shear wave frequency according to the statistical characteristic value of the shear wave propagation speed corresponding to the shear wave frequency, and display the shear wave elasticity measurement value and / or shear wave viscosity measurement value corresponding to each shear wave frequency on the result report interface.

[0144] Of course, the user can also substitute the shear wave measurement value of a single shear wave frequency into calculation models and algorithms such as the Voigt model or linear fitting model to manually calculate shear wave measurement values such as viscosity coefficient, dispersion coefficient, Young's modulus, and shear modulus.

[0145] In this embodiment, the regions of interest of the object to be measured may include multiple ones. The ultrasonic imaging device can also determine the statistical characteristic values of the shear wave measurement values of multiple points or multiple sub-regions in each region of interest based on the same shear wave frequency, and perform statistics on the statistical characteristic values of the shear wave measurement values of multiple regions of interest to obtain statistical data, and display the statistical data on the result report interface.

[0146] For example, as Figure 14In the result report interface shown, the shear wave measurement results of multiple regions of interest (ROIs) of the object under test are displayed in a list form at shear wave frequencies of 200 Hz and 400 Hz. It includes two tables. In the upper table, "STE-LSM" represents shear wave elastography - liver stiffness value. The first and second rows of the table refer to the shear wave measurement values of different ROIs; the second column is the measured value of Young's modulus; the third column "Cs Mean (m / s)" represents the shear wave propagation speed corresponding to the broadband shear wave, that is, the propagation speed of the shear wave group; the fourth and fifth columns are the shear wave propagation speeds corresponding to the shear wave frequencies of 200 Hz and 400 Hz respectively; the column corresponding to "Depth" is the depth of the ROI, and the column corresponding to "Diameter" is the diameter of the preferred region in the ROI.

[0147] For the table corresponding to "Comprehensive Statistics" below, it is the result of the statistics of the shear wave measurement values of the above two ROIs. For example, the statistical results of Young's modulus of the above two ROIs are shown in the "Comprehensive Statistics" table. The statistical results of Young's modulus may include statistical characteristic values of statistical indicators such as Median, Interquartile Range (IQR), IQR / Median, Average, Standard Deviation (STD), etc. Similarly, the statistical results of the shear wave propagation speed corresponding to the broadband shear wave of the above two ROIs, and the statistical results of the shear wave propagation speeds corresponding to the shear wave frequencies of 200 Hz and 400 Hz of the above two ROIs can be obtained, and so on.

[0148] Similarly, in Figure 15 In the result report interface shown, the shear wave measurement results of multiple regions of interest (ROIs) of the object under test are displayed in a list form. It includes two tables. In the upper table, the first and second rows of the table refer to the shear wave measurement values of different ROIs; the second column is the measured value of Young's modulus; the third column "Cs Mean (m / s)" represents the shear wave propagation speed corresponding to the broadband shear wave, that is, the propagation speed of the shear wave group; the fourth and fifth columns are the measured values of the viscosity coefficient and the dispersion coefficient respectively, and both can be obtained by calculating and processing the shear wave propagation speed according to their respective corresponding calculation models or algorithms; the column corresponding to "Depth" is the depth of the ROI, and the column corresponding to "Diameter" is the diameter of the preferred region in the ROI.

[0149] The table corresponding to "Comprehensive Statistics" below is the result of the shear wave measurement statistics for the above two regions of interest. For example, the statistical results of the Young's modulus of the above two regions of interest are displayed in the "Comprehensive Statistics" table. The statistical results of the Young's modulus can include statistical characteristic values of statistical indicators such as Median, Interquartile Range (IQR), IQR / Median, Average, Standard Deviation (STD), etc. Similarly, the statistical results of the shear wave propagation speed corresponding to the broadband shear waves of the above two regions of interest, the measured values of the viscosity coefficient of the above two regions of interest, and the statistical results of the measured values of the dispersion coefficient can be obtained, and so on.

[0150] Therefore, the user can obtain the overall level of the shear wave measurement values of each region of interest and the measurement results of each region of interest at different shear wave frequencies through the result report interface. Displayed in a summarized manner, it is convenient for the user to obtain the measurement result information. At the same time, it is also convenient for the user to compare the similarities and differences in the measurement results between different regions of interest, and to compare the similarities and differences in the measurement results between different shear wave frequencies.

[0151] Based on the same inventive concept as Figure 2 the embodiment shown, another embodiment of the shear wave measurement result display method is proposed in the embodiment of the present application. Please refer to Figure 16 , another embodiment of the shear wave measurement result display method in the embodiment of the present application includes:

[0152] 301. Obtain the shear wave data of the region of interest of the object to be measured, where the shear wave data is obtained based on the echo data of the ultrasonic wave that tracks the shear wave generated in the region of interest;

[0153] 302. Extract the tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data;

[0154] The operations performed in steps 301 and 302 are similar to the operations performed in steps 201 and 202 in the embodiment shown above Figure 2 and will not be elaborated here.

[0155] 303. Determine the shear wave measurement value of the tissue motion information corresponding to the selected frequency, and display the shear wave measurement value of the tissue motion information corresponding to the selected frequency;

[0156] The operation performed in this step is similar to the operation performed in step 203 in the embodiment shown above Figure 2 Based on the same as Figure 2Technical means similar to the method of determining the shear wave measurement value corresponding to each shear wave frequency described in the illustrated embodiment can be used to determine the shear wave measurement value of the tissue motion information corresponding to the selected frequency, and the shear wave measurement value of the tissue motion information corresponding to the selected frequency can be displayed. Among them, the selected frequency is any one of the at least two different shear wave frequencies described above.

[0157] 304. Receive a switching instruction from the user to switch the selected frequency to a target frequency;

[0158] 305. In response to the switching instruction, switch the display of the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency;

[0159] In this embodiment, the user can switch different shear wave frequencies to view the changes in the shear wave measurement values of the tissue at different shear wave frequencies. Therefore, the user can input an operation to switch the selected frequency to the target frequency to the ultrasonic imaging device. The ultrasonic imaging device receives this operation and responds by switching the display of the shear wave measurement value corresponding to the selected frequency to the shear wave measurement value corresponding to the target frequency. Among them, the target frequency is any one of the at least two different shear wave frequencies other than the selected frequency described above.

[0160] For example, if the shear wave measurement value corresponding to the shear wave frequency of 200 Hz is currently displayed, when the user switches to the shear wave frequency of 400 Hz, the shear wave measurement value corresponding to the 400 Hz shear wave frequency is obtained, and the currently displayed shear wave measurement value corresponding to the 200 Hz shear wave frequency is switched to the shear wave measurement value corresponding to the 400 Hz shear wave frequency.

[0161] Among them, the operation of obtaining the shear wave measurement value corresponding to the target frequency can be completed after step 302. For example, before the user switches the shear wave frequency, the shear wave measurement value corresponding to the target frequency is processed based on the tissue motion information corresponding to the target frequency, and the previously processed shear wave measurement value can be directly obtained when the user switches the shear wave frequency; alternatively, when the user switches the shear wave frequency, the shear wave measurement value corresponding to the target frequency is processed based on the tissue motion information corresponding to the target frequency. This embodiment does not limit the order of obtaining the shear wave measurement value corresponding to the target frequency.

[0162] Therefore, in this embodiment, the ultrasonic imaging device obtains shear wave data of the region of interest of the object to be measured, extracts tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data, determines the shear wave measurement value of the tissue motion information corresponding to the selected frequency, and displays the shear wave measurement value of the tissue motion information corresponding to the selected frequency. When receiving an operation of switching the selected frequency to the target frequency by the user, the shear wave measurement value corresponding to the selected frequency is switched and displayed as the shear wave measurement value corresponding to the target frequency. Doctors can arbitrarily switch different shear wave frequencies to observe the shear wave measurement results of tissues at different shear wave frequencies, which is convenient for doctors to observe the physiological state and health condition of tissues from multiple dimensions, and is more conducive to doctors making accurate diagnoses by synthesizing the shear wave measurement results of multiple shear wave frequencies, thereby improving the accuracy of tissue ultrasound examination. In addition, the shear wave measurement results of a single shear wave frequency also have clinical application potential and can provide more research value for the quantitative analysis of shear wave measurement parameters at the forefront.

[0163] In this embodiment, the shear wave generated by the region of interest can be generated by exciting an acoustic radiation force pulse acting on the object to be measured; alternatively, the shear wave is generated by the vibration of the object to be measured caused by an external force acting on the object to be measured; alternatively, the shear wave is generated by the vibration of the object to be measured caused by the movement of body tissues. This embodiment does not limit the manner of generating shear waves inside tissues, and any manner implemented based on the natural principle of shear wave generation falls within the protection scope of this embodiment.

[0164] Based on Figure 16 In a preferred implementation manner of the shown embodiment, determining the shear wave measurement value of the tissue motion information corresponding to the selected frequency may be calculating the shear wave elasticity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave elasticity measurement; and / or calculating the shear wave viscosity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave viscosity measurement.

[0165] Therefore, in an alternative manner, the shear wave elasticity measurement value corresponding to the selected frequency can be displayed on the measurement result interface. When receiving a switching instruction from the user to switch the selected frequency to the target frequency, the shear wave elasticity measurement value corresponding to the selected frequency on the measurement result interface is switched and displayed as the shear wave elasticity measurement value corresponding to the target frequency. Among them, the shear wave elasticity measurement value corresponding to the target frequency is calculated according to the preset algorithm for shear wave elasticity measurement for the tissue motion information corresponding to the target frequency, and its specific calculation method has been introduced in detail above and will not be elaborated here.

[0166] In another alternative, the shear wave viscosity measurement value corresponding to the selected frequency can be displayed on the measurement result interface. When a switching instruction for switching the selected frequency to the target frequency is received, the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface is switched to display the shear wave viscosity measurement value corresponding to the target frequency. Among them, the shear wave viscosity measurement value corresponding to the target frequency is calculated based on the preset algorithm for shear wave viscosity measurement for the tissue motion information corresponding to the target frequency. Its specific calculation method has been introduced in detail above and will not be elaborated here.

[0167] Among them, the shear wave elasticity measurement value refers to the measurement item based on shear wave elasticity measurement. For example, it may include one or more of shear wave propagation speed, Young's modulus, and shear modulus, or include other measurement items characterizing tissue elasticity. The shear wave viscosity measurement value includes one or more of viscosity coefficient, dispersion coefficient, and fluidity parameter, or includes other measurement items characterizing tissue viscosity.

[0168] Therefore, correspondingly, the shear wave viscosity measurement value can specifically be the original measurement value of the viscosity measurement item or the statistical characteristic value obtained by statistically processing the original measurement value. The original measurement value is obtained by processing the shear wave data according to the algorithm or model corresponding to the viscosity measurement item. For example, the measurement value of the viscosity coefficient is obtained by processing the shear wave data according to the Voigt model. The shear wave elasticity measurement value can be the original measurement value of the elasticity measurement item or the statistical characteristic value obtained by statistically processing the original measurement value. The original measurement value is obtained by processing the shear wave data according to the algorithm or model corresponding to the elasticity measurement item. For example, the measurement value of Young's modulus can be obtained by processing the shear wave data according to the algorithm formula E = 3ρVs2 (where ρ is the tissue density and Vs is the shear wave propagation speed).

[0169] Examples of the display effects of the shear wave viscosity measurement value and the shear wave elasticity measurement value can be similar to those shown in the foregoing Figure 6 、 8 to 12、 Figure 14 、 Figure 15 The display effect shown in any of the figures. The specific display method has been introduced in detail above and will not be elaborated here. Of course, it can also be displayed according to other display methods, which are not limited here.

[0170] In another alternative, the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency can be simultaneously displayed on the measurement result interface. When a switching instruction for switching the selected frequency to the target frequency is received by the user, the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface are switched and displayed as the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the target frequency. Among them, the shear wave elasticity measurement value corresponding to the target frequency is calculated based on the preset algorithm for shear wave elasticity measurement for the tissue motion information corresponding to the target frequency, and the shear wave viscosity measurement value corresponding to the target frequency is calculated based on the preset algorithm for shear wave viscosity measurement for the tissue motion information corresponding to the target frequency.

[0171] Among them, the shear wave elasticity measurement value displayed on the measurement result interface includes at least one of the maximum value, minimum value, mean value, and standard deviation of the shear wave elasticity measurement values of multiple points or multiple sub-regions in the region of interest, and can also be statistical characteristic values such as variance, median value, and mode. The shear wave viscosity measurement value displayed on the measurement result interface includes at least one of the maximum value, minimum value, mean value, and standard deviation of the shear wave viscosity measurement values of multiple points or multiple sub-regions in the region of interest, and can also be statistical characteristic values such as variance, median value, and mode.

[0172] Therefore, by displaying or switching the shear wave measurement values corresponding to different shear wave frequencies, the user can understand the overall level of the shear wave measurement results of the region of interest at different shear wave frequencies, provide more reference data for the diagnosis of tissue health status, and also facilitate the user to perform quantitative analysis on the shear wave elasticity measurement of the tissue in combination with the shear wave measurement values.

[0173] Moreover, through the method of simultaneous display on the same screen, doctors can view the measurement results of multiple different shear wave frequencies on the same screen, which is convenient for doctors to compare the similarities and differences of the measurement results of different shear wave frequencies on the same interface, and is also more convenient for doctors to make accurate diagnoses in combination with the measurement results of multiple different shear wave frequencies.

[0174] Next, based on the specific structural composition of the foregoing ultrasonic imaging device and the functions of each structure, the components of the ultrasonic imaging device and the functions and operations performed by each component will be further described in detail.

[0175] In this embodiment, the ultrasonic imaging device includes:

[0176] An ultrasonic probe;

[0177] A transmitting / receiving circuit, which is used to, when a shear wave is generated in the region of interest of the object to be measured, drive the ultrasonic probe to transmit ultrasonic waves tracking the shear wave to the region of interest and receive the echoes of the ultrasonic waves to obtain ultrasonic echo data;

[0178] A processor for processing the ultrasonic echo data to obtain shear wave data of the region of interest and performing the foregoing based on the shear wave data of the region of interest Figure 2 Or Figure 16 A method for displaying shear wave measurement results performed by an ultrasonic imaging device in the illustrated embodiments and their multiple preferred embodiments.

[0179] In this embodiment, the functions of the components of the ultrasonic imaging device and the operations performed are similar to those of the ultrasonic imaging device in the foregoing Figure 2 Or Figure 16 The operations performed by the ultrasonic imaging device in the illustrated embodiments and their multiple preferred embodiments, and will not be described herein again.

[0180] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0181] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces, indirect couplings or communication connections of devices or units, and can be in electrical, mechanical or other forms.

[0182] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0183] In addition, in each embodiment of the present application, the functional units can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0184] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

Claims

1. A method for displaying shear wave measurement results, characterized in that, Comprising: Obtaining shear wave data of an interested region of an object under test, where the shear wave data is obtained based on echo data of ultrasonic waves that track shear waves generated in the interested region; Extracting tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data; Determining shear wave measurement values of the tissue motion information corresponding to each shear wave frequency; Mapping the shear wave measurement value of the tissue motion information corresponding to a selected frequency into a shear wave image, and displaying the shear wave image corresponding to the selected frequency; the selected frequency is one of the at least two different shear wave frequencies; When receiving an operation by a user to switch the selected frequency to a target frequency, switching the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency; Wherein, the shear wave image corresponding to the target frequency is mapped from the shear wave measurement value of the tissue motion information corresponding to the target frequency, and the target frequency is any other shear wave frequency among the at least two different shear wave frequencies except the selected frequency.

2. The method according to claim 1, wherein The determining the shear wave measurement values of the tissue motion information corresponding to each shear wave frequency includes: Calculating shear wave elasticity measurement values of the tissue motion information corresponding to each shear wave frequency according to a preset algorithm for shear wave elasticity measurement; and / or, Calculating shear wave viscosity measurement values of the tissue motion information corresponding to each shear wave frequency according to a preset algorithm for shear wave viscosity measurement; The mapping the shear wave measurement value corresponding to the tissue motion information of the selected frequency into a shear wave image includes: Mapping the shear wave elasticity measurement value corresponding to the selected frequency into a shear wave elasticity image; and / or, Mapping the shear wave viscosity measurement value corresponding to the selected frequency into a shear wave viscosity image.

3. The method according to claim 2, wherein The displaying the shear wave image corresponding to the selected frequency includes: Displaying the shear wave elasticity image corresponding to the selected frequency on a measurement result interface; The switching the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency includes: On the measurement result interface, switching the display of the shear wave elasticity image corresponding to the selected frequency to the shear wave elasticity image corresponding to the target frequency; Wherein, the shear wave elasticity image corresponding to the target frequency is mapped from the shear wave elasticity measurement value corresponding to the target frequency.

4. The method according to claim 3, characterized in that, The method further includes: Displaying the shear wave elasticity measurement value corresponding to the selected frequency on the measurement result interface; When receiving an operation by a user to switch the selected frequency to a target frequency, the method further includes: On the measurement result interface, switching the display of the shear wave elasticity measurement value corresponding to the selected frequency to the shear wave elasticity measurement value corresponding to the target frequency.

5. The method according to claim 2, characterized in that, The displaying the shear wave image corresponding to the selected frequency includes: Displaying the shear wave viscosity image corresponding to the selected frequency on a measurement result interface; The switching the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency includes: On the measurement result interface, switching the display of the shear wave viscosity image corresponding to the selected frequency to the shear wave viscosity image corresponding to the target frequency; Among them, the shear wave viscosity image corresponding to the target frequency is mapped from the shear wave viscosity measurement value corresponding to the target frequency.

6. The method according to claim 5, characterized in that The method further includes: displaying the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface; When receiving an operation for the user to switch the selected frequency to a target frequency, the method further includes: on the measurement result interface, switching the display of the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave viscosity measurement value corresponding to the target frequency.

7. The method according to claim 2, characterized in that, The displaying the shear wave image corresponding to the selected frequency includes: simultaneously displaying the shear wave elasticity image and the shear wave viscosity image corresponding to the selected frequency on the measurement result interface; The switching the display of the shear wave image corresponding to the selected frequency to the shear wave image corresponding to the target frequency includes: on the measurement result interface, switching the display of the shear wave elasticity image and the shear wave viscosity image corresponding to the selected frequency to the shear wave elasticity image and the shear wave viscosity image corresponding to the target frequency. Among them, the shear wave elasticity image corresponding to the target frequency is mapped from the shear wave elasticity measurement value corresponding to the target frequency, and the shear wave viscosity image corresponding to the target frequency is mapped from the shear wave viscosity measurement value corresponding to the target frequency.

8. The method according to claim 7, wherein When simultaneously displaying the shear wave elasticity image and the shear wave viscosity image corresponding to the selected frequency, the method further includes: simultaneously displaying the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface; When receiving an operation for the user to switch the selected frequency to a target frequency, the method further includes: on the measurement result interface, switching the display of the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the target frequency.

9. The method according to any one of claims 3 to 8, characterized in that The shear wave elasticity measurement value displayed on the measurement result interface includes at least one of the maximum value, the minimum value, the mean value, and the standard deviation of the shear wave elasticity measurement values of multiple points or multiple sub-regions in the region of interest. The shear wave viscosity measurement value displayed on the measurement result interface includes at least one of the maximum value, the minimum value, the mean value, and the standard deviation of the shear wave viscosity measurement values of multiple points or multiple sub-regions in the region of interest.

10. The method according to claim 9, wherein The multiple points or multiple sub-regions are multiple points or multiple sub-regions in the preferred region containing tissue parenchyma in the region of interest; The measurement result interface is further used to display the region of interest and / or the preferred region.

11. The method according to any one of claims 2 to 10, characterized in that, The calculating the shear wave elasticity measurement value of the tissue motion information corresponding to each shear wave frequency according to the preset algorithm for shear wave elasticity measurement includes: calculating the shear wave propagation speed of the tissue motion information corresponding to each shear wave frequency; For each shear wave frequency, calculating the elastic modulus corresponding to the shear wave frequency according to the tissue density of the object to be measured and the shear wave propagation speed corresponding to the shear wave frequency; The calculating the shear wave viscosity measurement value of the tissue motion information corresponding to each shear wave frequency according to the preset algorithm for shear wave viscosity measurement includes: calculating the shear wave propagation speed corresponding to the tissue motion information of each shear wave frequency; For each shear wave frequency, a shear wave viscosity measurement value corresponding to the shear wave frequency is calculated based on the shear wave propagation speed corresponding to the shear wave frequency and the shear wave frequency.

12. The method according to any one of claims 2 to 10, characterized in that, The shear wave elasticity measurement value includes one or more of a shear wave propagation speed, a Young's modulus, and a shear modulus; The shear wave viscosity measurement value includes one or more of a viscosity coefficient, a dispersion coefficient, and a fluidity parameter.

13. The method according to claim 1, wherein The mapping of the shear wave measurement value of the tissue motion information corresponding to the selected frequency into a shear wave image and displaying the shear wave image corresponding to the selected frequency includes: Mapping the shear wave measurement value corresponding to the selected frequency into a shear wave image with a target display effect and displaying the shear wave image with the target display effect; The target display effect includes any one or more display effects of gray scale, pseudo-color, and color.

14. The method according to claim 1, wherein The method further includes: Displaying shear wave measurement values corresponding to multiple shear wave frequencies on a result report interface, where the shear wave measurement value corresponding to each shear wave frequency is a statistical eigenvalue of the shear wave measurement values of multiple points or multiple sub-regions of the region of interest, and the statistical eigenvalue includes one or more of a maximum value, a minimum value, an average value, and a standard deviation.

15. The method according to claim 14, wherein The shear wave measurement value corresponding to each shear wave frequency is a statistical eigenvalue of the shear wave propagation speeds of multiple points or multiple sub-regions of the region of interest; The method further includes: For each shear wave frequency, calculating a shear wave elasticity measurement value and / or a shear wave viscosity measurement value corresponding to the shear wave frequency according to the statistical eigenvalue of the shear wave propagation speed corresponding to the shear wave frequency; Displaying the shear wave elasticity measurement value and / or the shear wave viscosity measurement value corresponding to each shear wave frequency on the result report interface.

16. The method according to claim 1, wherein The region of interest includes multiple ones; the method further includes: Determining the statistical eigenvalues of the shear wave measurement values of multiple points or multiple sub-regions of each region of interest based on the same shear wave frequency; Statistically analyzing the statistical eigenvalues of the shear wave measurement values of multiple regions of interest to obtain statistical data; Displaying the statistical data on a result report interface.

17. The method according to any one of claims 1 to 16, characterized in that, Receiving an operation by the user to switch the selected frequency to a target frequency, including: Displaying an operation interface, where the operation interface includes a frequency switching control associated with the at least two different shear wave frequencies; Receiving a triggering operation by the user on the frequency switching control and identifying the triggering operation as switching the selected frequency to the target frequency associated with the frequency switching control.

18. A method for displaying shear wave measurement results, characterized in that, Including: Obtaining shear wave data of a region of interest of a measured object, where the shear wave data is obtained based on echo data of ultrasonic waves tracking shear waves generated in the region of interest; Extracting tissue motion information corresponding to at least two different shear wave frequencies from the shear wave data; Determining a shear wave measurement value of the tissue motion information corresponding to the selected frequency and displaying the shear wave measurement value of the tissue motion information corresponding to the selected frequency, where the selected frequency is any one of the at least two different shear wave frequencies; Receiving a switching instruction by the user to switch the selected frequency to a target frequency; In response to the switching instruction, switch the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency; wherein the target frequency is any one of the at least two different shear wave frequencies other than the selected frequency.

19. The method according to claim 18, wherein The shear wave is generated by an acoustic radiation force pulse acting on the object to be measured; alternatively, the shear wave is generated by the vibration of the object to be measured caused by an external force acting on the object to be measured; alternatively, the shear wave is generated by the vibration of the object to be measured caused by the motion of body tissues.

20. The method according to claim 18 or 19, characterized in that, The determination of the shear wave measurement value of the tissue motion information corresponding to the selected frequency includes: Calculating the shear wave elasticity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave elasticity measurement; and / or, Calculating the shear wave viscosity measurement value of the tissue motion information corresponding to the selected frequency according to a preset algorithm for shear wave viscosity measurement.

21. The method according to claim 20, wherein The display of the shear wave measurement value of the tissue motion information corresponding to the selected frequency includes: Displaying the shear wave elasticity measurement value corresponding to the selected frequency on the measurement result interface; The switching of the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency includes: On the measurement result interface, switching the shear wave elasticity measurement value corresponding to the selected frequency to the shear wave elasticity measurement value corresponding to the target frequency; The shear wave elasticity measurement value corresponding to the target frequency is calculated from the tissue motion information corresponding to the target frequency according to a preset algorithm for shear wave elasticity measurement.

22. The method according to claim 20, wherein The display of the shear wave measurement value of the tissue motion information corresponding to the selected frequency includes: Displaying the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface; The switching of the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency includes: On the measurement result interface, switching the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave viscosity measurement value corresponding to the target frequency; The shear wave viscosity measurement value corresponding to the target frequency is calculated from the tissue motion information corresponding to the target frequency according to a preset algorithm for shear wave viscosity measurement.

23. The method according to claim 20, wherein The display of the shear wave measurement value of the tissue motion information corresponding to the selected frequency includes: Simultaneously displaying the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency on the measurement result interface; The switching of the shear wave measurement value of the tissue motion information corresponding to the selected frequency to the shear wave measurement value of the tissue motion information corresponding to the target frequency includes: On the measurement result interface, switching the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the selected frequency to the shear wave elasticity measurement value and the shear wave viscosity measurement value corresponding to the target frequency; wherein the shear wave elasticity measurement value corresponding to the target frequency is calculated from the tissue motion information corresponding to the target frequency according to a preset algorithm for shear wave elasticity measurement; The shear wave viscosity measurement value corresponding to the target frequency is obtained by calculating the tissue motion information corresponding to the target frequency according to a preset algorithm for shear wave viscosity measurement.

24. An ultrasonic imaging device, characterized in that, It includes: An ultrasonic probe; A transmitting / receiving circuit, which is used to, when a shear wave is generated in the region of interest of the object under test, excite the ultrasonic probe to transmit ultrasonic waves tracking the shear wave to the region of interest and receive the echoes of the ultrasonic waves to obtain ultrasonic echo data; A processor, which is used to process the ultrasonic echo data to obtain the shear wave data of the region of interest and execute the shear wave measurement result display method according to any one of claims 1 to 23 based on the shear wave data of the region of interest.

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