Ultrasound contrast film file playing method, ultrasound film file playing method and ultrasound equipment

Abstract

The present application provides a method for playing an ultrasound contrast imaging movie file, an ultrasound movie file playing method, and an ultrasound device. The method comprises: receiving a playback instruction for a movie file, wherein the movie file is dynamic data of an ultrasound image, the ultrasound image is formed according to an ultrasound echo, and the ultrasound echo is a sound wave signal returned after the probe of the ultrasound device sends an ultrasound wave to the target tissue; determining the imaging frame rate of the ultrasound image; determining the playback frame rate of the movie file according to the imaging frame rate, wherein the imaging frame rate is negatively correlated with the playback frame rate; and playing the movie file at the playback frame rate. When playing a movie file at a playback frame rate that is negatively correlated with the imaging frame rate, a movie file with a low frame rate plays more smoothly, and a movie file with a high frame rate plays more in line with the human eye's perception.

Description

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 26, 2021, with application number 202111250203.2 and invention name “Ultrasound contrast film file playback method, ultrasound film file playback method and ultrasound equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention specifically relates to the field of ultrasound contrast imaging technology, and more specifically relates to an ultrasound contrast imaging movie file playback method, an ultrasound movie file playback method, and an ultrasound device. Background Art

[0003] Ultrasound waves can penetrate deeply into tissues without causing tissue damage, making them ideal for non-invasive biomedical imaging. Ultrasound waves will scatter when they encounter scatterers, and the intensity of the scattering is related to the size and shape of the scatterer and the difference in acoustic impedance with the surrounding tissue. Taking blood as an example, blood scatters ultrasound waves very weakly, and blood appears "echoless" on ordinary ultrasound instruments. In order to enhance the scattering of ultrasound waves by blood, a medium (microbubbles) with an acoustic impedance completely different from that of blood is added to the blood, thereby enhancing the scattering within the blood. Tissue ultrasound contrast imaging is achieved by injecting an ultrasound contrast agent, a solution containing microbubbles, into the body. The contrast agent enters organs and tissues, causing them to appear visible or enhancing their appearance, thus providing an important basis for clinical diagnosis.

[0004] In recent years, contrast-enhanced ultrasound (CEUS) imaging has played an increasingly important role in the differential diagnosis and ablation assessment of diseases such as cardiovascular disease, liver disease, thyroid disease, and breast disease. For example, liver tumors often have more abundant microvascular flow than normal tissue, and their CEUS images typically show faster entry and exit of microbubbles in the lesion than in normal tissue. Generally speaking, to distinguish these hemodynamic differences between normal and malignant tissue, CEUS imaging requires a certain imaging frame rate.

[0005] Different ultrasound imaging modes are used for different tissues and different diseases, and different imaging modes correspond to different imaging frame rates. Existing methods for playing dynamic data of ultrasound images usually directly use the imaging frame rate corresponding to the imaging mode for playback. Too high or too low an imaging frame rate will affect the playback effect of the ultrasound image dynamic data, thereby affecting the user experience. Summary of the Invention

[0006] The purpose of this application is to overcome the existing technology and provide an ultrasound contrast film file playback method, an ultrasound film file playback method and an ultrasound device.

[0007] In one embodiment, a method for playing an ultrasound movie file is provided, comprising:

[0008] Receive playback instructions for movie files;

[0009] The movie file is dynamic data of a contrast image, the contrast image is formed based on an ultrasound echo, and the ultrasound echo is a sound wave signal returned after a probe of an ultrasound contrast imaging device sends an ultrasound wave to a target tissue according to an imaging mode. The imaging mode includes a first imaging mode and a second imaging mode, and the imaging frame rate corresponding to the first imaging mode is greater than the imaging frame rate of the second imaging mode.

[0010] determining an imaging mode of the movie file;

[0011] determining a playback frame rate of the movie file according to the imaging mode;

[0012] Play the movie file using the playback frame rate;

[0013] When the imaging mode of the movie file is the first imaging mode, the playback frame rate of the movie file is determined to be a first playback frame rate according to the first imaging mode, and the first playback frame rate is less than the imaging frame rate corresponding to the first imaging mode.

[0014] When playing the high frame rate contrast imaging image generated based on the high frame rate contrast imaging mode (first imaging mode), the movie file is played at a frame rate lower than the imaging frame rate. This can avoid the playback frame rate being too high, the short residence time of each frame of the contrast imaging image, and the inability to effectively display the detailed information in the image to the user, affecting the user's viewing experience.

[0015] In one embodiment, a method for playing an ultrasound movie file is provided, comprising:

[0016] receiving a playback instruction for a movie file, wherein the movie file is dynamic data of an ultrasound image, the ultrasound image being formed based on an ultrasound echo, which is a sound wave signal returned after a probe of an ultrasound device transmits an ultrasound wave to a target tissue;

[0017] determining an imaging frame rate of the ultrasound image;

[0018] Determining a playback frame rate of the movie file according to the imaging frame rate, wherein the imaging frame rate is negatively correlated with the playback frame rate;

[0019] The movie file is played at the playback frame rate.

[0020] The playback frame rate is adjusted by the imaging frame rate of the movie file. The imaging frame rate is negatively correlated with the playback frame rate. This can avoid the problem that the movie file cannot effectively display the detailed information in the image to the user due to the short residence time of each frame of the imaging image. On the contrary, if the imaging frame rate is too low, the residence time of each frame of the imaging image is too long, resulting in slow playback speed, thereby improving the user viewing experience.

[0021] In one embodiment, an ultrasound device is provided, including a probe, a transmitting circuit, a receiving circuit, a wave speed synthesis circuit, a memory and a processor, and the processor is used to execute the ultrasound contrast film file playback method or the steps in the ultrasound film file playback method in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 is a schematic structural diagram of an ultrasonic device in one embodiment;

[0024] Figure 2 1 is a flow chart of a method for playing an ultrasound movie file in one embodiment;

[0025] Figure 3 FIG1 is a flow chart of a method for playing an ultrasound contrast imaging movie file in one embodiment;

[0026] Figure 4 1 is a flow chart of a method for playing an ultrasound movie file in one embodiment;

[0027] Figure 5 This is an example of a touch screen operation interface in manual mode in one embodiment;

[0028] Figure 6 This is an example of a touch screen operation interface in manual mode in an embodiment. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0030] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0031] It should be understood that the present invention can be implemented in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to make disclosure thorough and complete and to fully convey the scope of the present invention to those skilled in the art.

[0032] The purpose of the terms used herein is only to describe specific embodiments and is not intended to limit the present invention. When used herein, the singular forms "a", "an", and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0033] In order to fully understand the present invention, a detailed structure will be provided in the following description to illustrate the technical solution proposed by the present invention. Optional embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other implementations.

[0034] Please refer to Figure 1 , Figure 1 1 is a schematic block diagram of the structure of an ultrasound device in an embodiment of the present application. The ultrasound device 10 may include a probe 100, a transmitting circuit 101, a transmit / receive selection switch 102, a receiving circuit 103, a beamforming circuit 104, a processor 105, and a display 106. The transmitting circuit 101 can stimulate the probe 100 to transmit ultrasound waves toward the target tissue containing the contrast agent; the receiving circuit 103 can receive ultrasound echoes returned from the target tissue through the probe 100, thereby obtaining ultrasound echoes; the ultrasound echoes are subjected to beamforming processing by the beamforming circuit 104 and then sent to the processor 105. The processor 105 processes the data obtained after the beamforming processing to obtain an ultrasound image of the target tissue. The ultrasound images obtained by the processor 105 can be stored in the memory 107. These ultrasound images can be displayed on the display 106.

[0035] In one embodiment of the present application, the display 106 of the aforementioned ultrasound device 10 may be a touch screen, a liquid crystal display, etc., or it may be an independent display device such as a liquid crystal display, a television, etc. that is independent of the ultrasound device 10, or it may be a display screen on an electronic device such as a mobile phone or a tablet computer, etc.

[0036] In actual applications, the processor 105 can 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, and a microprocessor, so that the processor 105 can execute the corresponding steps of the ultrasound imaging method in each embodiment of the present application.

[0037] The memory 107 can 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 memory, and provides instructions and data to the processor.

[0038] In one embodiment, referring to Figure 2 , Figure 2 The specific steps for playing ultrasound movie files are as follows:

[0039] 201. Receive a play instruction for a movie file.

[0040] In this specific embodiment, the movie file is dynamic data of a contrast image. Contrast images are generated based on ultrasound echoes, which are the acoustic signals returned after the ultrasound probe of an ultrasound device transmits ultrasound waves to the target tissue. Contrast images are also a type of ultrasound image, including but not limited to B-mode images and images obtained by elastography.

[0041] The movie file can be played on an ultrasound device or on other devices capable of playing ultrasound imaging data. For ease of explanation, the example of a movie file played on an ultrasound device is used. A play instruction is a computer instruction used to instruct the playback of a movie file. This computer instruction can be an instruction automatically generated by the ultrasound device based on user input, or it can be an instruction sent to the ultrasound device by another terminal device. User input can include, but is not limited to, voice input, click operations on the movie file, etc. The ultrasound device 10 receives the play instruction generated based on the user input, or receives the play instruction sent by another terminal to the ultrasound device 10.

[0042] 202. Determine an imaging frame rate of an ultrasound image.

[0043] The imaging frame rate of an ultrasound image is related to parameters such as the imaging depth, the number of times each frame is sent, and the speed of sound. The imaging frame rate of an ultrasound image can be adjusted by adjusting the above parameters, that is, the imaging frame rate of an ultrasound image is fixed when the above parameters are fixed. Different tissues and organs have different requirements for the imaging frame rate of ultrasound images, and the imaging frame rates of different dimensions are also different. Currently, imaging frame rates are mainly divided into three categories: ordinary two-dimensional imaging frame rate, two-dimensional high frame rate, and three-dimensional / four-dimensional volume rate. The frame rate of ordinary two-dimensional imaging frame rate is usually lower than the two-dimensional high frame rate, and the three-dimensional / four-dimensional volume rate is usually lower than the two-dimensional imaging frame rate. The ordinary two-dimensional imaging frame rate can be 10-15 frames per second, the high frame rate can be dozens to hundreds of frames per second, and the three-dimensional and four-dimensional volume rates are generally around 1-5 volumes per second.

[0044] 203 : Determine the playback frame rate of the movie file according to the imaging frame rate. The imaging frame rate is negatively correlated with the playback frame rate.

[0045] 204 , playing the movie file using the playback frame rate.

[0046] The playback frame rate refers to the frame rate at which a movie file is played, such as 10 frames, 30 frames, or 35 frames per second, etc. In this embodiment, different imaging frame rates correspond to different playback frame rates, and the playback frame rate is negatively correlated with the imaging frame rate, that is, a movie with a large imaging frame rate is played at a smaller playback frame rate, and a movie with a small imaging frame rate is played at a larger playback frame rate. This is similar to playing a movie file with fast imaging in a "slow" manner and playing a movie file with slow imaging in a "fast forward" manner. When a movie file with fast imaging is played at the same playback frame rate as the imaging frame rate, it cannot provide the human eye with the feeling of several times the frame rate increase. For a movie file with slow imaging, the human eye can feel the "frame skipping" and "stuttering" of the image caused by the low frame rate, resulting in a poor viewing experience. Slow down the movie file with fast imaging and fast forward the movie file with slow imaging to improve the viewing experience of the movie file.

[0047] In one embodiment, when determining the playback frame rate based on the imaging frame rate, the playback frame rate can be determined directly or indirectly based on the imaging frame rate. Direct determination of the playback frame rate means that the imaging frame rate and the playback frame rate are directly associated, while indirect determination means that the imaging frame rate and the playback frame rate are associated through other parameters.

[0048] In one embodiment, when determining the playback frame rate based on the imaging frame rate, the imaging frame rate can be divided into intervals, with different imaging frame rate intervals corresponding to different playback frame rates. An imaging frame rate within an interval can correspond to one playback frame rate, multiple playback frame rates, or a playback frame rate interval. When multiple playback frame rates or playback frame rate intervals are used, the user can independently select or customize the playback frame rate within the interval. This increases user interaction and enhances the product experience.

[0049] In one embodiment, when determining the playback frame rate based on the imaging frame rate, it can also be automatically calculated based on the imaging frame rate of each movie file and a custom playback frame rate calculation method. The input of this calculation method is the imaging frame rate, and the output is the playback frame rate. For example, the playback frame rate can be obtained by adding or subtracting a fixed value from the imaging frame rate, or by multiplying the imaging frame rate by a coefficient. The playback frame rate is adaptively adjusted according to the imaging frame rate using a set calculation method to improve the user experience. The adaptive method does not require human intervention, making the operation more convenient.

[0050] The above-mentioned ultrasonic movie file playback method adjusts the playback frame rate according to the imaging frame rate of the movie file, that is, if the imaging frame rate is high, it is played at a frame rate lower than the imaging frame rate, and if the imaging frame rate is low, it is played at a frame rate higher than the imaging frame rate, so as to solve the above-mentioned problems of poor viewing experience such as stuttering and frame skipping caused by the use of the imaging frame rate directly as the playback frame rate for low-frame-rate movie files in existing playback, and solve the problem of poor viewing experience caused by the fast content update of high-frame-rate movie files.

[0051] In one embodiment, step 203 includes: calculating the difference between the imaging frame rate and the preset frame rate; when the difference is within a first threshold range and the imaging frame rate is greater than the preset frame rate, determining that the playback frame rate is less than the imaging frame rate; when the difference is within a second threshold range and the imaging frame rate is less than the preset frame rate, determining that the playback frame rate is greater than the imaging frame rate.

[0052] The preset frame rate and threshold interval can be user-defined or factory-preset. User-defined preset frame rate and threshold interval can make the set value more in line with the user's habits. The lower limit of the first threshold interval is greater than or equal to the upper limit of the second threshold interval. Determine whether the movie file is slow-motion or fast-motion based on the threshold interval. If the difference is in the first threshold interval, it means that the imaging frame rate of the movie file is large, so that the playback frame rate of the movie file is less than the imaging frame rate, so as to achieve the effect of slow-motion of the movie file. If it is in the second threshold interval, it means that the imaging frame rate of the movie file is small, so that the playback frame rate of the movie file is greater than the imaging frame rate, so as to achieve the effect of fast-motion of the movie file.

[0053] In one embodiment, step 203 further includes: when the difference is within a third threshold interval, determining that the playback frame rate is equal to the imaging frame rate or the preset frame rate; wherein the upper limit of the third threshold interval is less than or equal to the lower limit of the first threshold interval, and the lower limit of the third threshold interval is greater than or equal to the upper limit of the first threshold interval.

[0054] The third threshold interval is the interval between the first threshold interval and the second threshold interval. This interval can be user-defined or factory-set. If the imaging frame rate is within the third threshold interval, it means that the imaging frame rate in this interval can be directly used for playback. Therefore, the imaging frame rate in this interval can be directly used as the playback frame rate, or the preset frame rate can be used as the playback frame rate for movie files with an imaging frame rate within the third threshold interval. Further dividing the imaging frame rate makes the playback strategy of movie files more diverse, thereby improving the user experience.

[0055] In one embodiment, step 203 includes: determining a playback speed gear according to the imaging frame rate; wherein the playback speed corresponding to the playback speed gear is negatively correlated with the imaging frame rate; and calculating the playback frame rate according to the playback speed gear and the imaging frame rate.

[0056] The playback speed gear is used to adjust the playback speed of the movie file. By adjusting the speed gear, the playback frame rate of the movie file can be adjusted to achieve effects such as fast playback or slow playback of the movie file. Different imaging frame rates correspond to different playback speed gears, and one imaging frame rate can correspond to one, multiple playback speed gears or playback speed gear ranges. If it corresponds to only one, the only playback speed gear corresponding to the imaging frame rate will be used as the speed gear for playing the movie file. If it corresponds to multiple, the user can select or customize it independently. The speed of the playback speed corresponding to the playback speed gear is negatively correlated with the size of the imaging frame rate. That is, a fast playback speed corresponds to a small imaging frame rate, and a slow playback speed corresponds to a large imaging frame rate. A faster playback speed is used to play a movie file with a small imaging frame rate to achieve a fast-forward effect, and a slower playback speed is used to play a movie file with a large imaging frame rate to achieve a slow-forward effect.

[0057] When calculating the imaging frame rate and the playback speed level, the imaging frame rate can be directly multiplied by the playback speed corresponding to the playback speed level. Alternatively, other calculations can be performed after the multiplication, such as adding a fixed value to the product or rounding the product. Alternatively, the imaging frame rate and playback speed can be processed before multiplying them. The specific calculation method is not limited.

[0058] In one embodiment, step 203 includes: determining a playback speed gear according to the imaging frame rate; wherein the playback speed corresponding to the playback speed gear is negatively correlated with the imaging frame rate; and using a preset playback frame rate corresponding to the playback speed gear as the playback frame rate.

[0059] Among them, the playback speed gear and the playback speed corresponding to the playback speed gear are negatively correlated with the imaging frame rate, which is the same as the description in the previous article and will not be repeated here. The playback speed gear corresponds directly to the playback frame rate. That is, one playback speed gear corresponds to one playback frame rate, multiple playback frame rates, or a playback frame rate range. When corresponding to one playback frame rate, the playback frame rate is directly used as the frame rate for playing the movie file. When corresponding to multiple playback frame rates, the user can select or customize the playback frame rate corresponding to the playback speed gear.

[0060] In one embodiment, determining the playback speed gear according to the imaging frame rate includes: determining the playback speed gear from a plurality of preset playback speed gears according to the imaging frame rate.

[0061] The preset playback speed gear is pre-stored on the ultrasound device 10, and the ultrasound device 10 also stores the association relationship between the imaging frame rate and the preset playback speed gear. After determining the imaging frame rate, the playback speed gear corresponding to the imaging frame rate is directly searched from the preset playback speed gears according to the stored association relationship. If there is a unique preset playback speed gear corresponding to the imaging frame rate, the preset playback speed gear is directly used as the playback speed gear of the movie file. If there are multiple preset playback speed gears corresponding to the imaging frame rate, the corresponding preset playback speed is prompted. The prompt can be directly displayed on the display 106, or can be prompted by voice or other means. The specific prompt method is not limited here. The user selects the final playback speed gear according to the prompt, or customizes the playback speed gear according to the prompt.

[0062] In one embodiment, the playback speed gear is determined from a plurality of preset playback speed gears according to the imaging frame rate, including: determining a to-be-selected playback speed gear from a plurality of preset playback speed gears according to the imaging frame rate; and determining a playback speed gear from the to-be-selected playback speed gears according to input information of a user input interface.

[0063] The selected playback speed gear is a preset playback speed gear for the user to select. A higher imaging frame rate corresponds to a slower playback speed, while a lower imaging frame rate corresponds to a faster playback speed. The user interface is used to interact with the ultrasound device 10. This user interface can be used to select a selected playback speed gear, and the playback speed gear is determined based on the selection. Determining the selected playback speed gear from the playback speed gears based on the imaging frame rate reduces the range of selectable parameters, facilitating user selection and thus reducing interaction costs.

[0064] In one embodiment, prompts are provided for all preset playback speed levels, or only for the playback speed levels to be selected. The specific prompting method is not limited. If prompts are provided for all preset playback speed levels, the prompts for the playback speed levels to be selected and the prompts for the speed levels other than the playback speed levels to be selected can be the same or different. Using different prompting methods makes it easier for the user to distinguish between the selectable and unselectable speed levels in the movie file, making it easier for the user to make choices.

[0065] In one embodiment, the playback speed gear to be selected is displayed. The playback speed gear to be selected is displayed on the display 106.

[0066] In another embodiment, a first display mode is used to display preset playback speed gears other than the playback speed gear to be selected; a second display mode is used to display the playback speed gear to be selected; wherein the second display mode is different from the first display mode.

[0067] All preset playback speed levels are displayed on the display 106. The first display mode and the second display mode are different. For example, the first display mode is merely displayed, and the user cannot select the level displayed in the first display mode, but can operate the level displayed in the second display mode. Different color codes may be used for display, or a combination of color and operability may be used for differentiation. Using different display modes facilitates user differentiation between selectable and non-selectable levels in the movie file, facilitating user selection and thus reducing interaction costs.

[0068] In one embodiment, step 204 includes: playing the movie file in a loop using the playback frame rate.

[0069] After starting a movie file, unless you pause or stop it, it will continue playing in a loop. For example, when the last frame is played, the next frame will be the first frame. You can set the number of loops to suit your needs, or simply use the default number of loops.

[0070] In one embodiment, during the automatic playback of a movie file, the user can intervene in the playback of the movie file at any time, such as pausing the playback, stopping the playback, switching the playback mode, and adjusting the playback frame rate.

[0071] In one embodiment, the process of playing a movie file using a playback frame rate further includes: switching the playback mode of the movie file from an automatic playback mode to a manual playback mode based on a first switching instruction; and playing image frames of the movie file based on the manual playback mode.

[0072] During the automatic playback of a movie file, the user can switch the playback mode at any time. The first switching instruction is a computer instruction for switching the playback mode. Upon receiving this instruction, the playback mode of the movie file is switched from automatic playback mode to manual playback mode. After the playback mode is switched, the movie file plays based on the user's manual operation.

[0073] In one embodiment, upon detecting that a certain image frame being played during automatic playback meets a preset condition, the playback mode of the movie file is directly switched to manual playback mode. The preset condition may be a factory-set condition, a condition determined based on user usage habits or collected data, or a condition set by the user. For example, if an abnormality in the parameters of a tissue or organ is identified in the image, the playback mode is automatically switched.

[0074] In one embodiment, playing image frames of a movie file based on a manual playback mode includes: when a preset operation on a control panel is detected, responding to the preset operation so that the image frames of the movie file are played at a playback speed corresponding to the preset operation, wherein the playback speed is positively correlated with the operation speed of the preset operation.

[0075] The control panel may include a knob, a trackball, and a touch screen. The control panel is used to receive user operations. Preset operations are predefined operations, and different preset operations correspond to different operation instructions. When it is detected that the user's operation on the knob, trackball, or touch screen is a preset operation, a corresponding instruction is generated based on the preset operation and responded to the instruction. The preset operation may include, but is not limited to, rotating the knob, swiping the trackball, and sliding the touch screen. When detecting the preset operation, the operation duration, operation displacement, etc. of the preset operation are detected, and the operation speed is determined based on the operation duration and operation displacement. The playback speed is positively correlated with the operation speed of the preset operation, meaning that the faster the user's operation speed, the faster the playback speed. For example, a user can achieve a fast playback effect of a movie file by quickly rotating the knob, quickly swiping the trackball, or quickly swiping on the touch screen, and a slow playback effect of a movie file by slowly rotating the knob, slowly swiping the trackball, or slowly swiping on the touch screen.

[0076] In one embodiment, the preset operation also includes an operation direction. Different operation directions correspond to different playback directions. The operation direction is used to determine whether the movie file is played forward or backward. The user can customize the correspondence between the operation direction and the forward or backward playback of the movie. For example, rotating the knob counterclockwise indicates reverse playback, while rotating the knob clockwise indicates forward playback. For example, swiping the touch screen upward or right indicates forward playback, while swiping downward or left indicates reverse playback.

[0077] In one embodiment, the playback speed corresponding to the manual playback mode is lower than the playback speed corresponding to the automatic playback mode. The reason why the manual playback mode corresponds to the playback speed lower than the automatic playback mode is to facilitate users to better view the details of the movie file. That is, if a user wants to take a closer look at a movie file, the maximum playback speed of manual playback can be limited to a speed lower than the automatic playback speed. Taking a trackball as an example, when a user rotates the trackball to switch between the various image frames of a movie file, no matter how fast the user rotates, the switching time for each image frame is greater than a pre-set time threshold. This prevents the user from rotating the trackball too quickly, causing the various image frames of the movie file to stay for too short a time, affecting the user's viewing experience.

[0078] In one embodiment, an ultrasound image sends ultrasound echoes to a target tissue according to an imaging mode of an ultrasound device, wherein the imaging mode includes a first imaging mode and a second imaging mode, and the imaging frame rates of the first imaging mode and the second imaging mode are different, the imaging frame rate of the first imaging mode is greater than the imaging frame rate of the second imaging mode, and the first imaging mode and the second imaging mode are used for imaging corresponding to different time periods during the same imaging process of tissue.

[0079] In one embodiment, the ultrasound device has an ultrasound contrast imaging function. When performing ultrasound contrast imaging on human tissues or organs, the same contrast imaging process includes at least two imaging modes, that is, at least a first imaging mode and a second imaging mode. The imaging speed of the first imaging mode is faster than the imaging speed of the second imaging mode. The imaging speed can be pre-configured or determined by the user by adjusting parameters or selecting a mode before starting the contrast imaging.

[0080] In one embodiment, the first imaging mode and the second imaging mode are used in the diffusion stage of the contrast agent and other stages outside the diffusion stage, and the corresponding stages of the first imaging mode and the second imaging mode are different. In order to observe the diffusion process of the contrast agent microbubbles more carefully, a higher imaging frame rate is required for imaging in the diffusion stage of the contrast agent microbubbles, and in other stages, an imaging mode corresponding to an imaging frame rate lower than the imaging frame rate required for the diffusion stage can be selected for imaging. Using a high frame rate to collect contrast image data in the diffusion stage and a relatively low frame rate to collect contrast image data in other stages can achieve a better balance between rich contrast data and data processing volume, and the equipment capacity and data processing capabilities of general ultrasound equipment are given priority. Without sacrificing data from important stages, contrast data can also be processed at a faster speed.

[0081] In one embodiment, the contrast agent diffusion stage includes the stage where contrast agent microbubbles are generated from non-existence. The generation of contrast agent microbubbles from non-existence is a relatively important process during the contrast agent diffusion process. Therefore, during the contrast agent diffusion process, at least a high frame rate imaging mode should be used to capture the generation of contrast agent microbubbles from non-existence to formation, thereby enriching the data volume of this process and balancing the processing speed of the device.

[0082] In one embodiment, referring to Figure 3 , Figure 3 A method for playing an ultrasound contrast imaging movie file is provided, comprising:

[0083] 301: Receive a play instruction for a movie file.

[0084] In this specific embodiment, the movie file is dynamic data of the contrast image, and the contrast image is formed based on the ultrasonic echo. The ultrasonic echo is the sound wave signal returned after the probe of the ultrasound contrast imaging device sends ultrasonic waves to the target tissue according to the imaging mode. The imaging mode includes a first imaging mode and a second imaging mode. The imaging frame rate corresponding to the first imaging mode is greater than the imaging frame rate of the second imaging mode.

[0085] 302, determine the imaging mode of the movie file.

[0086] 303 : Determine the playback frame rate of the movie file according to the imaging mode.

[0087] 304, play the movie file using the playback frame rate.

[0088] In this specific embodiment, when the imaging mode of the movie file is the first imaging mode, the playback frame rate of the movie file is determined to be the first playback frame rate according to the first imaging mode, and the first playback frame rate is less than the imaging frame rate corresponding to the first imaging mode.

[0089] The terms used in this embodiment have the same meanings as those in the above embodiments and are not further described herein. In this embodiment, the first imaging mode and the second imaging mode are two different imaging modes on an ultrasound imaging device, and the imaging frame rate of the first imaging mode is higher than that of the second imaging mode.

[0090] In one embodiment, the imaging frame rate corresponding to the second imaging mode is a common two-dimensional angiography imaging frame rate, and the imaging frame rate corresponding to the first imaging mode is a two-dimensional angiography high frame rate.

[0091] When the imaging mode of the movie file is the first imaging mode, the playback frame rate of the movie file is determined to be the first playback frame rate according to the first imaging mode, so that the first playback frame rate is lower than the imaging frame rate of the first imaging mode, and the movie file is played at the first playback frame rate, thereby realizing slow playback of the movie file. The movie file is played at a frame rate lower than the imaging frame rate, thereby avoiding the problem of too high playback frame rate, short residence time of each frame of the contrast image, and inability to effectively display detailed information in the image to the user, thereby improving the user viewing experience.

[0092] In one embodiment, the first playback frame rate is less than the imaging frame rate corresponding to the first imaging mode, and the first playback frame rate is greater than or equal to the imaging frame rate of the second imaging mode. The range of the first playback frame rate is further limited to avoid the first playback frame rate being too low, resulting in poor viewing experience for the user.

[0093] During playback, users can pause the playback of movie files and further adjust the playback frame rate according to personal needs.

[0094] In one embodiment, when it is determined that the imaging mode of a movie file is the second imaging mode, the playback frame rate of the movie file is determined to be the second playback frame rate according to the second imaging mode, and the second playback frame rate is equal to the imaging frame rate of the second imaging mode; the movie file is played using the second playback frame rate.

[0095] The imaging mode of the movie file is the second imaging mode, which means that when viewing the movie file at the imaging frame rate, the frame rate is within the range of frame rates that are more comfortable for the human eye. The imaging frame rate of the second imaging mode can be used for playback by default. During actual use, users can also modify the playback frame rate of the movie file according to personal needs.

[0096] In one embodiment, the imaging mode also includes a third imaging mode, and the imaging frame rate of the third imaging mode is less than the imaging frame rate of the second imaging mode; when it is determined that the imaging mode of the movie file is the third imaging mode, the third playback frame rate of the movie file is determined according to the third imaging mode, and the movie file is played at the third playback frame rate.

[0097] In this embodiment, the third imaging mode can be three-dimensional or four-dimensional imaging. When the imaging mode of the movie file is the third imaging mode, it means that the imaging frame rate of the movie file in this imaging mode is too low. If the movie file is played directly at the imaging frame rate in this imaging mode, a phenomenon similar to "stuttering" will occur, affecting the user's viewing experience. In order to improve the user's viewing experience, the movie file obtained using the third imaging mode is played at a frame rate higher than the imaging frame rate (the third playback frame rate) when playing.

[0098] In one embodiment, the third playback frame rate is greater than the imaging frame rate corresponding to the third imaging mode and less than the imaging frame rate corresponding to the second imaging mode. Further limiting the third playback frame rate avoids excessively high playback frame rates, which can lead to a shortened display time for the contrast image data and an inability to effectively display detailed information, thereby improving the user viewing experience.

[0099] In one embodiment, determining the playback frame rate of the movie file according to the imaging mode includes: determining the playback frame rate according to the imaging frame rate of the imaging mode, and the playback frame rate is negatively correlated with the imaging frame rate.

[0100] In one embodiment, the playback frame rate of a movie file is determined according to the imaging mode, including: determining the playback speed gear of the movie file according to the imaging frame rate of the movie file; determining the playback frame rate according to the playback speed gear and the imaging frame rate, or using the preset playback frame rate corresponding to the playback speed gear as the playback frame rate.

[0101] The playback speed level is the same as that in any of the above embodiments. When determining the playback speed level based on the imaging frame rate of the movie file, a single playback speed level may be determined based on a preset correspondence, or multiple playback speed levels may be determined to be selected, or a range of playback speed levels may be determined to be selected. The playback speed level may directly correspond to the playback speed or to the playback frame rate.

[0102] The playback speed gear corresponds to a preset playback frame rate. The preset playback frame rate corresponding to the first playback speed gear is less than the imaging frame rate of the first imaging mode. The preset playback frame rate corresponding to the second playback speed gear is equal to the imaging frame rate of the second imaging mode. The preset playback frame rate corresponding to the third playback speed gear is greater than the imaging frame rate of the third imaging mode.

[0103] In one embodiment, determining the playback speed level of the movie file according to the imaging frame rate of the movie file includes: determining the playback speed level from a plurality of preset playback speed levels according to the imaging frame rate.

[0104] In one embodiment, the playback speed gear is determined from a plurality of preset playback speed gears according to the imaging frame rate, including: determining a to-be-selected playback speed gear from a plurality of preset playback speed gears according to the imaging frame rate; and determining a playback speed gear from the to-be-selected playback speed gears according to input information of a user input interface.

[0105] In one embodiment, before determining the playback speed gear from the to-be-selected playback speed gears according to the input information of the user input interface, the method further includes: displaying the to-be-selected playback speed gears.

[0106] In one embodiment, before determining the playback speed gear from the to-be-selected playback speed gears based on the input information of the user input interface, it also includes: using a first display method to display a preset playback speed gear other than the to-be-selected playback speed gear; using a second display method to display the to-be-selected playback speed gear; wherein the second display method is different from the first display method.

[0107] In one embodiment, the playback frame rate includes a first playback frame rate, a second playback frame rate, or a third playback frame rate; and playing the movie file using the playback frame rate includes: playing the movie file in a loop using the playback frame rate.

[0108] In one embodiment, the playback frame rate includes a first playback frame rate, a second playback frame rate, or a third playback frame rate; when the playback frame rate is used to play the current frame of the movie file, it also includes: based on the first switching instruction, switching the playback mode of the movie file from the automatic playback mode to the manual playback mode, and playing the image frame of the movie file based on the manual playback mode.

[0109] In one embodiment, playing image frames of a movie file based on a manual playback mode includes: when a preset operation on a control panel is detected, responding to the preset operation so that the image frames of the movie file are played at a playback speed corresponding to the preset operation, wherein the playback speed is positively correlated with the operation speed of the preset operation.

[0110] In one embodiment, the playback speed corresponding to the manual playback mode is lower than the playback speed corresponding to the automatic playback mode.

[0111] In one embodiment, the first imaging mode and the second imaging mode correspond to imaging in different time periods during the same tissue imaging process.

[0112] In one embodiment, the first imaging mode and the second imaging mode are used in the diffusion phase of the contrast agent and in phases other than the diffusion phase, and the first imaging mode and the second imaging mode correspond to different phases.

[0113] In one embodiment, the diffusion stage of the contrast agent includes a stage in which contrast agent microbubbles appear from nothing to something.

[0114] In one embodiment, referring to Figure 4 , Figure 4 A method for playing an ultrasound movie file is provided, comprising:

[0115] 401: Receive a playback instruction for a movie file.

[0116] In this specific embodiment, the movie file is dynamic data of an ultrasound image. The ultrasound image is formed based on an ultrasound echo. The ultrasound echo is a sound wave signal returned after the probe of the ultrasound device sends ultrasound to the target tissue.

[0117] 402 : Determine an imaging frame rate of an ultrasound image.

[0118] 403 : Determine the playback frame rate of the movie file according to the imaging frame rate.

[0119] 404, play the movie file at the playback frame rate.

[0120] Among them, steps 401, 402 and 404 are basically the same as steps 201, 202 and 204 respectively, and are not repeated here.

[0121] When determining the playback frame rate based on the imaging frame rate, a negative correlation function between the imaging frame rate and the playback frame rate can be defined, wherein the imaging frame rate is the input of the negative correlation function and the playback frame rate is the output of the negative correlation function. A function of the imaging frame rate, playback speed, and playback frame rate can also be defined, wherein the imaging frame rate and playback speed are the inputs of the function and the playback frame rate is the output of the function. The imaging frame rate is determined based on the imaging mode of the ultrasound device 10, and the playback speed can be user-defined or selected from preset playback speeds. The user can customize the playback speed according to personal needs or select a playback speed to suit their personal usage habits, thereby improving the user experience.

[0122] In one embodiment, step 402 includes: determining a playback speed level; and determining a playback frame rate based on the playback speed level and the imaging frame rate. The playback speed level can be user-defined or selected from speed levels stored on the ultrasound device 10. Alternatively, the playback speed level corresponding to the imaging frame rate can be directly obtained from the ultrasound device 10 based on the correspondence between the imaging frame rate and the playback speed level. The method for calculating the playback frame rate based on the playback speed level and the imaging frame rate is the same as that described above.

[0123] In one embodiment, determining the playback speed gear includes: determining the playback speed gear through a user input interface; or obtaining a preset speed playback gear.

[0124] In one embodiment, determining the playback frame rate of a movie file based on the imaging frame rate includes: selecting a candidate parameter from preset parameters based on the imaging frame rate, wherein the preset parameter is a preset playback speed level or a preset playback frame rate; and determining the playback frame rate based on the candidate parameter. The preset parameter range is narrowed by the imaging frame rate to facilitate user selection.

[0125] In one embodiment, before determining the playback frame rate according to the parameters to be selected, the method further includes: displaying the parameters to be selected.

[0126] In one embodiment, before determining the playback frame rate according to the parameters to be selected, the method further includes: displaying preset parameters other than the playback frame rate in a first display mode; and displaying the parameters to be selected in a second display mode; wherein the second display mode is different from the first display mode.

[0127] In one embodiment, the imaging frame rate is negatively correlated with the parameter to be selected. The range of the preset parameter is narrowed by the imaging frame rate to facilitate user selection. When the imaging frame rate is negatively correlated with the parameter to be selected, the playback effect is better.

[0128] In one embodiment, when the preset parameter is a preset playback speed gear; based on the imaging frame rate, the parameters to be selected are filtered out from the preset parameters, including: based on the imaging frame rate, filtering out the playback speed gear to be selected from the preset playback speed gear; determining the playback frame rate based on the parameters to be selected, including: determining a target playback speed gear from the playback speed gear to be selected, and calculating the playback frame rate based on the target playback speed gear and the imaging frame rate.

[0129] In a specific embodiment, the method for playing an ultrasound movie file includes two play modes: manual play mode and automatic play mode. The specific steps of the two play modes are as follows:

[0130] 1. Manual mode:

[0131] The ultrasound image is browsed frame by frame by using the trackball or knob on the panel of the ultrasound device 10 ( Figure 5 (shown as a contrast image in the figure), slowly turn the trackball or rotate the knob, and the display 106 will update the adjacent frames of the current image. The step of scrolling with the knob or trackball can be customized, for example, the step can be set to one frame (roll) or two frames (rolls) of ultrasound images. When the doctor needs to fast forward or rewind the ultrasound image, he can do so by quickly turning the trackball or accelerating the knob. The image of the corresponding frame is updated and displayed according to the user's turning speed. The faster the speed, the faster the update, similar to fast play. The device's trackball and knob can both realize manual browsing of dynamic contrast data. And the browsing speed changes accordingly with the user's scrolling speed. Figure 4This is an example of the touchscreen interface in manual mode. The "Select Frame" knob is used to select ultrasound images frame by frame for review.

[0132] 2. Automatic mode

[0133] After opening the movie file to be browsed, the touch screen button of the ultrasound device 10 can be used to automatically play the dynamic ultrasound image ( Figure 6 The image is shown as a contrast image in the figure. The playback speed can be selected. Selecting 1x speed is equivalent to playing at the frame rate used to store the contrast dynamic data. Playing at speeds greater than or less than 1x speed creates effects similar to "fast-motion" and "slow-motion" playback. The playback speed is set using the knob or buttons. Figure 6 This is an example of the touch screen operation interface in automatic mode.

[0134] The "Auto Playback" knob activates playback by pressing it, and selects the playback speed by rotating it. For example, in this example, the movie playback speed can be set to 1 / 10, 1 / 5, 1 / 2, 1, 2, and 4, a total of 6 options. The "Loop Play" button on the touchscreen automatically jumps to the starting frame and continues playback at the end of each frame, repeating the loop indefinitely.

[0135] The specific implementation steps of automatic mode are as follows:

[0136] Dynamic data (movie files) stored under ordinary 2D angiographic imaging conditions are played back by default at the imaging frame rate when the user reviews the files.

[0137] Dynamic data stored under high-frame-rate imaging conditions will automatically play back at a speed lower than 1x when the user reviews it. The specific playback speed is automatically calculated based on the imaging frame rate at the time of storage, and the resulting playback frame rate is lower than the imaging frame rate. For example, if the automatic playback speed (speed level) = 1 / (frame rate / 15), when the imaging frame rate is 75 FPS (75 frames per second), the playback speed will be 1 / 5x.

[0138] Dynamic data stored at extremely low frame rates, such as 4D fallopian tube ultrasound images, will automatically play back at a speed higher than 1x when the user reviews the data. The specific playback speed is still automatically calculated based on the system imaging frame rate / volume rate at the time of storage, with the resulting playback frame rate exceeding the imaging frame rate. For example, if the automatic playback speed = 1 / (volume rate / 3) and the 4D imaging volume rate is 1.5 VPS, playback will be at 2x speed.

[0139] In a specific embodiment, the closest speed level can be selected for playback based on the calculation result of the automatic playback speed, or playback can be performed directly based on the calculated speed.

[0140] This document is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications may be made to the exemplary embodiments without departing from the scope of this document. For example, the various operational steps and components used to perform the operational steps may be implemented in different ways (e.g., one or more steps may be deleted, modified, or incorporated into other steps) depending on the specific application or considering any number of cost functions associated with the operation of the system.

[0141] Additionally, as will be appreciated by those skilled in the art, the principles of this disclosure may be embodied in a computer program product on a computer-readable storage medium pre-loaded with computer-readable program code. Any tangible, non-transitory computer-readable storage medium may be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD-ROMs, DVDs, Blu-ray discs, etc.), flash memory, and / or the like. These computer program instructions may be loaded onto a general-purpose computer, a special-purpose computer, or other programmable data processing device to form a machine, such that the instructions executed on the computer or other programmable data processing device can generate a device that implements a specified function. These computer program instructions may also be stored in a computer-readable memory, which can instruct the computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory can form an article of manufacture that includes an implementation device that implements the specified function. The computer program instructions may also be loaded onto a computer or other programmable data processing device, causing the computer or other programmable device to execute a series of operational steps to produce a computer-implemented process, such that the instructions executed on the computer or other programmable device provide the steps for implementing the specified function.

[0142] Although the principles of this invention have been shown in various embodiments, many modifications of structure, arrangement, proportion, elements, materials and components that are particularly suitable for specific environments and operational requirements can be used without departing from the principles and scope of this invention. The above modifications and other changes or amendments are intended to be included within the scope of this invention.

[0143] The foregoing detailed description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of this disclosure. Therefore, the present disclosure will be considered in an illustrative rather than a restrictive sense, and all such modifications will be included within its scope. Similarly, the advantages, other advantages and solutions to the problems of the various embodiments have been described above. However, the benefits, advantages, solutions to the problems and any elements that can produce these, or make them more specific, should not be interpreted as critical, required or necessary. The term "comprising" and any other variants used in this article are all non-exclusive inclusions, so that a process, method, article or device that includes a list of elements includes not only these elements, but also other elements that are not explicitly listed or do not belong to the process, method, system, article or device. In addition, the term "coupled" and any other variants used in this article refer to physical connections, electrical connections, magnetic connections, optical connections, communication connections, functional connections and / or any other connections.

[0144] Those skilled in the art will recognize that many changes can be made to the details of the above embodiments without departing from the basic principles of the invention. Therefore, the scope of the invention should be determined from the following claims.

Claims

1. A method for playing ultrasound contrast imaging movie files, characterized in that: include: Receive playback instructions for movie files; The movie file is dynamic data of a contrast image, the contrast image is formed based on an ultrasound echo, and the ultrasound echo is a sound wave signal returned after a probe of an ultrasound contrast imaging device sends an ultrasound wave to a target tissue according to an imaging mode. The imaging mode includes a first imaging mode and a second imaging mode, and the imaging frame rate corresponding to the first imaging mode is greater than the imaging frame rate of the second imaging mode. determining an imaging mode of the movie file; Determining a playback frame rate of the movie file according to an imaging mode of the movie file; Play the movie file using the playback frame rate; Among them, when the imaging mode of the movie file is the first imaging mode, the playback frame rate of the movie file is determined to be the first playback frame rate according to the first imaging mode, the first playback frame rate is less than the imaging frame rate corresponding to the first imaging mode, and the first playback frame rate is greater than or equal to the imaging frame rate of the second imaging mode.

2. The method according to claim 1, characterized in that When the imaging mode of the movie file is the second imaging mode; The determining the playback frame rate of the movie file according to the imaging mode of the movie file, and playing the movie file at the playback frame rate, includes: determining a second playback frame rate of the movie file according to the second imaging mode, and playing the movie file at the second playback frame rate; The second playback frame rate is equal to the imaging frame rate corresponding to the second imaging mode.

3. The method according to claim 2, characterized in that The imaging mode further includes a third imaging mode, wherein the imaging frame rate of the third imaging mode is lower than the imaging frame rate of the second imaging mode; When the imaging mode of the movie file is the third imaging mode, The determining the playback frame rate of the movie file according to the imaging mode of the movie file, and playing the movie file at the playback frame rate, includes: determining a third playback frame rate of the movie file according to the third imaging mode, and playing the movie file at the third playback frame rate; The third playback frame rate is greater than the imaging frame rate corresponding to the third imaging mode.

4. The method according to claim 3, characterized in that The third playback frame rate is greater than an imaging frame rate corresponding to the third imaging mode, and less than an imaging frame rate corresponding to the second imaging mode.

5. The method according to claim 1, wherein The determining the playback frame rate of the movie file according to the imaging mode includes: Determining a playback speed level of the movie file according to an imaging frame rate of the movie file; Determine the playback frame rate according to the playback speed gear and the imaging frame rate of the movie file, or The preset playback frame rate corresponding to the playback speed gear is used as the playback frame rate.

6. The method according to claim 5, characterized in that Determining the playback speed level of the movie file according to the imaging frame rate of the movie file includes: The play speed gear is determined from a plurality of preset play speed gears according to the imaging frame rate of the movie file.

7. The method according to claim 6, characterized in that Determining the playback speed gear from a plurality of preset playback speed gears according to the imaging frame rate includes: Determining a to-be-selected playback speed level from a plurality of preset playback speed levels according to the imaging frame rate of the movie file; The play speed gear is determined from the to-be-selected play speed gears according to input information of a user input interface.

8. The method according to claim 7, characterized in that Before determining the playback speed gear from the to-be-selected playback speed gears according to the input information of the user input interface, the method further includes: The play speed gear to be selected is displayed.

9. The method according to claim 7, characterized in that Before determining the playback speed gear from the to-be-selected playback speed gears according to the input information of the user input interface, the method further includes: Displaying the preset playback speed gears other than the to-be-selected playback speed gears in a first display mode; Displaying the to-be-selected playback speed gear in a second display mode; The second display mode is different from the first display mode.

10. The method according to any one of claims 1 to 5, characterized in that Playing the movie file at the playback frame rate includes: The movie file is played in a loop at the playback frame rate.

11. The method according to claim 1, wherein In the process of playing the movie file at the playback frame rate, the method further includes: Based on the first switching instruction, switching the playback mode of the movie file from the automatic playback mode to the manual playback mode; The image frames of the movie file are played based on the manual play mode.

12. The method according to claim 11, characterized in that Playing the image frames of the movie file based on the manual play mode includes: When a preset operation on the control panel is detected, the preset operation is responded to so that the image frames of the movie file are played at a playback speed corresponding to the preset operation, wherein the playback speed is positively correlated with the operation speed of the preset operation.

13. The method according to claim 11, characterized in that The playback speed corresponding to the manual playback mode is smaller than the playback speed corresponding to the automatic playback mode.

14. The method according to claim 1, wherein The first imaging mode and the second imaging mode correspond to imaging in different time periods during the same tissue imaging process of angiography.

15. The method according to claim 14, characterized in that The first imaging mode is used in a diffusion phase of the contrast agent, and the second imaging mode is used in a phase other than the diffusion phase of the contrast agent.

16. The method according to claim 15, characterized in that The diffusion stage of the contrast agent includes the stage in which contrast agent microbubbles appear from nothing to something.

17. An ultrasonic device, characterized in that The ultrasound device includes a probe, a transmitting circuit, a receiving circuit, a wave speed synthesis circuit, a memory and a processor, and the processor is used to execute the method according to any one of claims 1 to 16.

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