Ultrasonic equipment channel consistency calibration method, device, equipment and medium

Abstract

The invention discloses an ultrasonic equipment channel consistency calibration method and device, equipment and a medium, and the method comprises the steps: determining a beam transmission mode, transmitting a pulse signal corresponding to the beam transmission mode, and receiving a first echo signal of each channel corresponding to the pulse signal; the second echo signal of each channel corresponding to the beam transmission mode is determined according to the first echo signal of each channel, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel, so that the different calibration coefficients of each channel can be determined for different beam transmission modes, and the calibration accuracy of each channel is improved. And finally, calibrating the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain a third echo signal of each channel, and finally, generating an ultrasonic image according to the third echo signal of each channel. The channel consistency calibration of different beam transmission modes is realized, and the problem of large limitation of the channel consistency calibration scheme of the ultrasonic equipment in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the field of medical ultrasonic imaging technology, and in particular to a method, device, equipment and medium for calibrating channel consistency of an ultrasonic device. Background Art

[0002] With the development of ultrasonic medical imaging equipment, the number of channels used for transmitting and receiving beams in medical ultrasonic equipment has gradually increased. At present, the number of channels in mainstream ultrasonic equipment is between 96 and 256 array elements. The large number of channels also brings about the problem of consistency between channels. The consistency between channels generally refers to the consistency of the amplitude of the receiving beam of each channel. The main reasons that affect the consistency difference between channels include:

[0003] 1. Differences in wiring between channels and differences in transmitting and receiving devices between channels. As the number of channels increases, it is difficult to ensure that the wiring of each channel is of equal length in the layout of the printed circuit board PCB, which will inevitably lead to certain channel differences. Secondly, the differences in devices on each channel also bring certain errors. Under general PCB wiring parameter conditions, unequal wiring lengths will cause a difference of 0.5 to 1 dB / meter between channels.

[0004] 2. Differences in ultrasound probes. With the increase in the number of ultrasound probe channels and the limitations of the acoustic head processing technology, there are certain differences between different array elements of the same probe, and there are also differences between probes, which requires calibration for different probes. At present, the sensitivity difference between the array elements of the mainstream ultrasound probes newly shipped is about ±0.5dB-±1.5dB. In clinical practice, in order to improve the quality of ultrasound images, it is usually required that the array circulator has a high consistency. However, with the long-term and repeated operation of the probe and the vibration and bump during operation, the sensitivity of some channels will decrease, thereby increasing the difference between channels, which directly affects the image quality.

[0005] In the prior art, ultrasound equipment channel consistency calibration is generally performed only on the fundamental wave mode. However, in actual use, the probe's echo responses to the harmonic mode and the fundamental wave mode are different, which makes the fundamental wave channel consistency calibration ineffective for harmonic imaging. Therefore, the ultrasound equipment channel consistency calibration scheme in the prior art has great limitations. Summary of the invention

[0006] The present application provides a method, device, equipment and medium for calibrating the channel consistency of an ultrasonic device, so as to solve the problem that the channel consistency calibration scheme of an ultrasonic device in the prior art has large limitations.

[0007] In a first aspect, the present application provides a method for calibrating channel consistency of an ultrasound device, the method comprising:

[0008] Determine a beam transmission mode, and transmit a pulse signal corresponding to the beam transmission mode;

[0009] receiving a first echo signal of each channel corresponding to the pulse signal, and determining a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel;

[0010] Acquiring the amplitude of the second echo signal of each channel, and determining the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel;

[0011] The amplitude of the second echo signal of each channel is calibrated according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and an ultrasonic image is generated according to the third echo signal of each channel.

[0012] In a second aspect, the present application provides an ultrasound equipment channel consistency calibration device, the device comprising:

[0013] A transmitting module, used to determine a beam transmission mode and transmit a pulse signal corresponding to the beam transmission mode;

[0014] A first determination module is used to receive the first echo signals of each channel corresponding to the pulse signal, and determine the second echo signals of each channel corresponding to the beam transmission mode according to the first echo signals of each channel;

[0015] A second determination module, configured to obtain the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel;

[0016] The calibration module is used to calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and generate an ultrasonic image according to the third echo signal of each channel.

[0017] In a third aspect, the present application provides an ultrasound device, including a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus;

[0018] Memory, used to store computer programs;

[0019] The processor is used to implement the method steps when executing the program stored in the memory.

[0020] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described are implemented.

[0021] The present application provides a method, apparatus, device and medium for calibrating channel consistency of an ultrasonic device. The method includes: determining a beam transmission mode and transmitting a pulse signal corresponding to the beam transmission mode; receiving a first echo signal of each channel corresponding to the pulse signal, and determining a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel; obtaining the amplitude of the second echo signal of each channel, and determining a calibration coefficient of each channel according to the amplitude of the second echo signal of each channel; calibrating the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain a third echo signal of each channel; and generating an ultrasonic image according to the third echo signal of each channel.

[0022] The above technical solution has the following advantages or beneficial effects:

[0023] In the present application, the beam transmission mode is first determined, a pulse signal corresponding to the beam transmission mode is transmitted, and after receiving the first echo signal of each channel corresponding to the pulse signal, the second echo signal of each channel corresponding to the beam transmission mode is determined according to the first echo signal of each channel, and then the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel, thereby achieving different calibration coefficients for each channel for different beam transmission modes, and finally calibrating the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel, and finally generating an ultrasonic image according to the third echo signal of each channel. Thus, channel consistency calibration for different beam transmission modes is achieved, solving the problem that the channel consistency calibration scheme of ultrasonic equipment in the prior art has large limitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 Schematic diagram of the channel consistency calibration process of the ultrasound equipment provided for this application;

[0026] Figure 2 Schematic diagram of the channel consistency calibration process of the ultrasound equipment provided for this application;

[0027] Figure 3 A schematic diagram of the process of determining the calibration coefficients of each channel in the fundamental wave mode provided by the present application;

[0028] Figure 4 A schematic diagram of the process of determining the calibration coefficients of each channel in the harmonic mode provided by the present application;

[0029] Figure 5 A schematic diagram of the process of determining the calibration coefficients of each channel in the harmonic mode provided by the present application;

[0030] Figure 6 A schematic diagram of a process for determining a calibration coefficient of each channel according to the amplitude of the second echo signal of each channel provided by the present application;

[0031] Figure 7 Schematic diagram of the channel consistency calibration process of the ultrasound equipment provided for this application;

[0032] Figure 8 A flow chart for generating ultrasound images provided for this application;

[0033] Fig. 9 A flowchart for determining the calibration coefficient in the fundamental wave mode provided by this application;

[0034] Fig.10 A flow chart of the first method of determining harmonic signals provided by the present application;

[0035] Fig.11 A second flow chart for determining harmonic signals provided by the present application;

[0036] Fig.12 A flowchart for determining calibration coefficients in harmonic mode provided by the present application;

[0037] Fig.13 A schematic diagram of the structure of the channel consistency calibration device for ultrasonic equipment provided in this application;

[0038] Fig.14 This is a schematic diagram of the structure of the ultrasonic equipment provided in this application. DETAILED DESCRIPTION

[0039] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0040] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0041] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0042] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0043] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functions associated with that element.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0045] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

[0046] Figure 1 A schematic diagram of the ultrasound equipment channel consistency calibration process provided in this application, the process includes the following steps:

[0047] S101: Determine a beam transmission mode, and transmit a pulse signal corresponding to the beam transmission mode.

[0048] S102: Receive a first echo signal of each channel corresponding to the pulse signal, and determine a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel.

[0049] S103: Acquire the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0050] S104: Calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and generate an ultrasonic image according to the third echo signal of each channel.

[0051] The ultrasonic device channel consistency calibration method provided in the present application is applied to the ultrasonic device, and the ultrasonic device first determines the beam transmission mode, wherein two beam transmission modes are configured in the ultrasonic device, namely the fundamental wave mode and the harmonic wave mode. The user can input the selection instruction of the beam transmission mode in the ultrasonic device, and the ultrasonic device determines the beam transmission mode according to the received instruction. The selection instruction of the beam transmission mode can be a text input selection instruction. For example, if "fundamental wave mode" is input in the ultrasonic device, the ultrasonic device determines that the current beam transmission mode is the fundamental wave mode, and if "harmonic mode" is input in the ultrasonic device, the ultrasonic device determines that the current beam transmission mode is the harmonic mode. Or the ultrasonic device displays the selection buttons of the fundamental wave mode and the harmonic wave mode. When the user clicks the fundamental wave mode button, the ultrasonic device determines that the current beam transmission mode is the fundamental wave mode. When the user clicks the harmonic mode button, the ultrasonic device determines that the current beam transmission mode is the harmonic mode.

[0052] After the ultrasound device determines the beam transmission mode, it transmits a pulse signal corresponding to the beam transmission mode. The ultrasound device sends pulse signals to each channel separately. If the beam transmission mode is the fundamental wave mode, the fundamental wave pulse signal is sent; if the beam transmission mode is the harmonic mode, the positive pulse signal is sent first, and then the negative pulse signal is sent.

[0053] After the pulse signal sent by the ultrasonic device is reflected, the first echo signal of each channel corresponding to the pulse signal can be received, and then the second echo signal of each channel corresponding to the beam transmission mode can be determined based on the first echo signal of each channel. It should be noted that if the beam transmission mode is the fundamental wave mode, the first echo signal of each channel can be directly used as the second echo signal of each channel corresponding to the fundamental wave mode. If the beam transmission mode is the harmonic mode, since the positive pulse signal and the negative pulse signal are transmitted successively, the first positive echo signal of each channel corresponding to the positive pulse signal and the first negative echo signal of each channel corresponding to the negative pulse signal are received, and then the second echo signal of each channel corresponding to the harmonic mode is determined based on the first positive echo signal and the first negative echo signal of each channel.

[0054] After the ultrasound device determines the second echo signal of each channel corresponding to the beam transmission mode, the amplitude of the second echo signal of each channel is obtained, and then the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel. Optionally, the amplitude of any second echo signal can be used as the target amplitude, and then for each channel, the ratio of the amplitude of the second echo signal of the channel to the target amplitude is calculated, and the ratio is used as the calibration coefficient of the channel.

[0055] The amplitude of the second echo signal of each channel is calibrated according to the calibration coefficient of each channel to obtain the third echo signal of each channel. That is, for each channel, the amplitude of the second echo signal of the channel is multiplied by the calibration coefficient of the channel to obtain the third echo signal of the channel. Finally, an ultrasonic image is generated according to the third echo signal of each channel.

[0056] In the present application, the beam transmission mode is first determined, a pulse signal corresponding to the beam transmission mode is transmitted, and after receiving the first echo signal of each channel corresponding to the pulse signal, the second echo signal of each channel corresponding to the beam transmission mode is determined according to the first echo signal of each channel, and then the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel, thereby achieving different calibration coefficients for each channel for different beam transmission modes, and finally calibrating the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel, and finally generating an ultrasonic image according to the third echo signal of each channel. Thus, channel consistency calibration for different beam transmission modes is achieved, solving the problem that the channel consistency calibration scheme of ultrasonic equipment in the prior art has large limitations.

[0057] Figure 2 A schematic diagram of the ultrasound equipment channel consistency calibration process provided in this application, the process includes the following steps:

[0058] S201: Determine the beam transmission mode. If the beam transmission mode is a fundamental wave mode, transmit a fundamental wave pulse signal corresponding to the fundamental wave mode. If the beam transmission mode is a harmonic mode, transmit a positive pulse signal and a negative pulse signal corresponding to the harmonic mode in sequence.

[0059] S202: Receive a first echo signal of each channel corresponding to the pulse signal, and determine a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel.

[0060] S203: Acquire the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0061] S204: Calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and generate an ultrasonic image according to the third echo signal of each channel.

[0062] If the beam transmission mode is the fundamental wave mode, determining the calibration coefficients of each channel includes:

[0063] receiving the first echo signal of each channel corresponding to the fundamental wave pulse signal, and using the first echo signal of each channel as the second echo signal of each channel corresponding to the fundamental wave mode;

[0064] The amplitude of the second echo signal of each channel is acquired, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel.

[0065] In fundamental wave mode, after the ultrasonic device transmits the fundamental wave pulse signal, the first echo signal of each channel is used as the second echo signal, the amplitude of the second echo signal of each channel is obtained, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel. Optionally, the amplitude of any second echo signal can be used as the target amplitude, and then for each channel, the ratio of the amplitude of the second echo signal of the channel to the target amplitude is calculated, and the ratio is used as the calibration coefficient of the channel.

[0066] Figure 3 A schematic diagram of a process for determining the calibration coefficients of each channel in the fundamental wave mode provided in this application includes the following steps:

[0067] S301: receiving the first echo signal of each channel corresponding to the fundamental wave pulse signal, and using the first echo signal of each channel as the second echo signal of each channel corresponding to the fundamental wave mode.

[0068] S302: Acquire the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0069] Figure 4 A schematic diagram of the process of determining the calibration coefficients of each channel in the harmonic mode provided by this application includes the following steps:

[0070] S401: Receive the first positive echo signal of each channel corresponding to the positive pulse signal;

[0071] S402: Receive a first negative echo signal of each channel corresponding to the negative pulse signal;

[0072] S403: superimposing the first positive echo signal and the first negative echo signal of each channel to obtain a second echo signal of each channel corresponding to the harmonic mode;

[0073] S404: Acquire the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0074] In the present application, after receiving the first positive echo signal and the second negative echo signal of each channel, for each channel, the first positive echo signal and the second negative echo signal of the channel are superimposed to obtain the harmonic signal of the channel as the second echo signal of the channel. Then, the amplitude of the second echo signal of each channel is obtained, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel. Optionally, the amplitude of any second echo signal can be used as the target amplitude, and then for each channel, the ratio of the amplitude of the second echo signal of the channel to the target amplitude is calculated, and the ratio is used as the calibration coefficient of the channel.

[0075] Figure 5 A schematic diagram of a process for determining the calibration coefficients of each channel in the harmonic mode provided by the present application includes the following steps:

[0076] S501: Receive the first forward echo signal of each channel corresponding to the forward pulse signal, and store the first forward echo signal of each channel into a first buffer.

[0077] S502: Receive the first negative echo signal of each channel corresponding to the negative pulse signal, and store the first negative echo signal of each channel into a second buffer.

[0078] S503: Superimpose the first positive echo signal of each channel in the first buffer and the first negative echo signal of each channel in the second buffer to obtain the second echo signal of each channel corresponding to the harmonic mode, and store the second echo signal of each channel in the third buffer.

[0079] S504: Acquire the amplitude of the second echo signal of each channel in the third buffer, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0080] In the present application, the ultrasonic device includes a first buffer, a second buffer and a third buffer. The first buffer is used to store the first positive echo signal of each channel, and the second buffer is used to store the first negative echo signal of each channel in the second buffer. The ultrasonic device superimposes the first positive echo signal of each channel in the first buffer and the first negative echo signal of each channel in the second buffer in the corresponding channel to obtain the second echo signal of each channel corresponding to the harmonic mode. The third buffer is used to store the second echo signal of each channel. The amplitude of the second echo signal of each channel in the third buffer is obtained, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel. Then, the amplitude of the second echo signal of each channel is calibrated according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and an ultrasonic image is generated according to the third echo signal of each channel. Thereby, the calibration of the echo signal in the harmonic mode is realized, and the quality of the ultrasonic image generated in the harmonic mode is improved.

[0081] Figure 6 The schematic diagram of the process of determining the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel provided in the present application includes:

[0082] S601: Determine an average amplitude of the second echo signals of the respective channels according to the amplitudes of the second echo signals of the respective channels.

[0083] S602: For each channel, determine a calibration coefficient of the channel according to a ratio of the amplitude of the second echo signal of the channel to the average amplitude.

[0084] In the present application, generating an ultrasonic image according to the third echo signal of each channel includes:

[0085] The third echo signals of each channel are beam synthesized to obtain a beam synthesized signal; the beam synthesized signal is processed by a field programmable gate array FPGA to form an ultrasonic image.

[0086] Figure 7 A schematic diagram of the ultrasound equipment channel consistency calibration process provided in this application, the process includes the following steps:

[0087] S701: Determine a beam transmission mode, and transmit a pulse signal corresponding to the beam transmission mode.

[0088] S702: Receive a first echo signal of each channel corresponding to the pulse signal, and determine a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel.

[0089] S703: Acquire the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0090] S704: Calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; perform beam synthesis on the third echo signal of each channel to obtain a beam synthesis signal; process the beam synthesis signal through a field programmable gate array FPGA to form an ultrasonic image.

[0091] The following is an explanation of the channel consistency calibration process of the ultrasound equipment provided in this application with reference to the accompanying drawings.

[0092] Figure 8 The ultrasonic image generation flow chart provided for this application shows that the ultrasonic front end is the core part of the ultrasonic device. The main control platform controls the high-voltage modulation circuit to generate the required high voltage. By controlling the opening sequence and opening time of the MOS tube, high-voltage excitation signals of different frequencies can be generated. The excitation signal reaches the probe after passing through the PCB routing to generate an ultrasonic signal. During reception, the reflected ultrasonic signal is received by the probe, amplified, filtered, and then converted into a digital signal through the AD conversion module, and then processed by the FPGA for digital signal processing to finally form an ultrasonic image.

[0093] Fig. 9 The flowchart for determining the calibration coefficient in the fundamental wave mode provided by the present application, in the fundamental wave mode, the ultrasound device operates in the single-transmit single-receive mode, obtains the AD data (echo signal) of each channel (channel 1, channel 2, ..., channel n) and stores it in the device, the program automatically calculates the echo signal amplitude of each channel, that is, calculates the echo signal amplitude A1 of channel 1, the echo signal amplitude A2 of channel 2, ..., the echo signal amplitude An of channel n, averages the echo signal amplitudes of all channels, S = (A1 + A2 + ... An) / n, and then calculates the ratio of the amplitude of the echo signal of each channel to the average value, and obtains the calibration coefficient of the channel in the fundamental wave mode α (i) = A (i) / S, i represents channel i. After the AD data stored in the device is calibrated with the calibration coefficient, the final ultrasound image is obtained through beam synthesis BF.

[0094] Fig.10 The first flow chart for determining harmonic signals provided in this application is as follows: Fig.10 As shown, a positive pulse signal and a negative pulse signal are transmitted successively, and the received positive echo signal and the negative echo signal are firstly beamformed (BF1 and BF2) and then added to obtain harmonic data. The obtained harmonic data is the harmonic data after beamformation, and it is impossible to calibrate the harmonic data of each channel separately.

[0095] Fig.11 The second flow chart for determining harmonic signals provided in this application is as follows: Fig.11 As shown, the collected AD data of each channel, i.e., the positive echo signal and the negative echo signal, will be temporarily stored in the buffer, the positive echo signal is stored in buffer1, and the negative echo signal is stored in buffer2. After the echo signals of the two positive and negative pulses of the channel are completely collected, the AD data are added to obtain the harmonic data and then beam synthesis is performed. This solution can obtain the harmonic AD data of each channel, facilitate the consistency calibration of the harmonic channel, and ensure the performance of harmonic imaging. The present application determines the calibration coefficient based on this method.

[0096] Fig.12 A flowchart for determining the calibration coefficient in the harmonic mode provided in the present application. In the harmonic mode, when obtaining the differential data of the harmonic channel, the device operates in a single-transmit single-receive mode. The main control controls the transmission of a positive pulse signal once and then a negative pulse signal, and obtains two echo signals, namely a positive echo signal and a negative echo signal. The two echo signals are added together to obtain the harmonic data. The addition refers to the addition of the positive echo signal and the negative echo signal of the same channel. For example, the positive echo signal of channel i and the negative echo signal of channel i are added to obtain the harmonic data of channel i. Traverse all channels to obtain the harmonic data of all channels, that is, to obtain the echo signal amplitude of all channels. At this time, the echo signal is harmonic data, that is, the echo signal amplitude B1 of channel 1, the echo signal amplitude B2 of channel 2, ..., the echo signal amplitude Bn of channel n. The harmonic data of all channels is divided by the average value of the harmonic data of all channels to obtain the calibration coefficient of each channel in the harmonic mode and store it in the device. The echo signal amplitude of all channels is averaged, S = (B1 + B2 + ... Bn) / n, and then the ratio of the amplitude of the echo signal of each channel to the average value is calculated to obtain the calibration coefficient of the channel in the harmonic mode β (i) = B (i) / S, i represents channel i. After calibration, beam synthesis is performed to generate an ultrasound image.

[0097] Fig.13 The schematic diagram of the structure of the ultrasonic equipment channel consistency calibration device provided in this application includes:

[0098] The transmitting module 131 is used to determine a beam transmission mode and transmit a pulse signal corresponding to the beam transmission mode;

[0099] A first determination module 132 is used to receive the first echo signals of each channel corresponding to the pulse signal, and determine the second echo signals of each channel corresponding to the beam transmission mode according to the first echo signals of each channel;

[0100] A second determination module 133, configured to obtain the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel;

[0101] The calibration module 134 is used to calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and generate an ultrasonic image according to the third echo signal of each channel.

[0102] The transmitting module 131 is used to determine the beam transmission mode. If the beam transmission mode is a fundamental wave mode, a fundamental wave pulse signal corresponding to the fundamental wave mode is transmitted; if the beam transmission mode is a harmonic mode, a positive pulse signal and a negative pulse signal corresponding to the harmonic mode are transmitted in sequence.

[0103] A first determination module 132 is used to receive the first echo signal of each channel corresponding to the fundamental wave pulse signal, and use the first echo signal of each channel as the second echo signal of each channel corresponding to the fundamental wave mode;

[0104] The second determination module 133 is used to obtain the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0105] The first determination module 132 is used to receive the first positive echo signal of each channel corresponding to the positive pulse signal; receive the first negative echo signal of each channel corresponding to the negative pulse signal; superimpose the first positive echo signal and the first negative echo signal of each channel to obtain the second echo signal of each channel corresponding to the harmonic mode;

[0106] The second determination module 133 is used to obtain the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0107] The first determination module 132 is used to receive the first positive echo signal of each channel corresponding to the positive pulse signal, and store the first positive echo signal of each channel in a first buffer; receive the first negative echo signal of each channel corresponding to the negative pulse signal, and store the first negative echo signal of each channel in a second buffer; superimpose the first positive echo signal of each channel in the first buffer and the first negative echo signal of each channel in the second buffer to obtain the second echo signal of each channel corresponding to the harmonic mode, and store the second echo signal of each channel in a third buffer;

[0108] The second determination module 133 is used to obtain the amplitude of the second echo signal of each channel in the third buffer, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel.

[0109] The second determination module 133 is used to determine the average amplitude of the second echo signal of each channel according to the amplitude of the second echo signal of each channel; for each channel, determine the calibration coefficient of the channel according to the ratio of the amplitude of the second echo signal of the channel to the average amplitude.

[0110] The calibration module 134 is used to perform beam synthesis on the third echo signals of the respective channels to obtain beam synthesis signals; and process the beam synthesis signals through a field programmable gate array FPGA to form an ultrasonic image.

[0111] The present application also provides an ultrasonic device, such as Fig.14 As shown, it includes: a processor 141, a communication interface 142, a memory 143 and a communication bus 144, wherein the processor 141, the communication interface 142, and the memory 143 communicate with each other through the communication bus 144;

[0112] The memory 143 stores a computer program, and when the program is executed by the processor 141, the processor 141 executes any one of the above method steps.

[0113] The communication bus mentioned in the above-mentioned ultrasound device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one thick line is used in the figure, but it does not mean that there is only one bus or one type of bus.

[0114] The communication interface 142 is used for communication between the ultrasound device and other devices.

[0115] The memory may include a random access memory (RAM) or a non-volatile memory (NVM), such as at least one disk memory. Optionally, the memory may also be at least one storage device located away from the aforementioned processor.

[0116] The above-mentioned processor can be a general-purpose processor, including a central processing unit, a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

[0117] The present application also provides a computer storage readable storage medium, wherein the computer readable storage medium stores a computer program executable by an ultrasound device, and when the program runs on the ultrasound device, the ultrasound device implements any of the above method steps when executed.

[0118] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0119] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for calibrating channel consistency of an ultrasonic device, characterized in that: The method comprises: Determine a beam transmission mode, and transmit a pulse signal corresponding to the beam transmission mode; receiving a first echo signal of each channel corresponding to the pulse signal, and determining a second echo signal of each channel corresponding to the beam transmission mode according to the first echo signal of each channel; Acquiring the amplitude of the second echo signal of each channel, and determining the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel; The amplitude of the second echo signal of each channel is calibrated according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and an ultrasonic image is generated according to the third echo signal of each channel.

2. The method according to claim 1, characterized in that The determining of the beam transmission mode and transmitting a pulse signal corresponding to the beam transmission mode comprises: Determine the beam transmission mode. If the beam transmission mode is a fundamental wave mode, transmit a fundamental wave pulse signal corresponding to the fundamental wave mode. If the beam transmission mode is a harmonic mode, transmit a positive pulse signal and a negative pulse signal corresponding to the harmonic mode in sequence.

3. The method according to claim 2, characterized in that If the beam transmission mode is the fundamental wave mode, determining the calibration coefficients of each channel includes: receiving the first echo signal of each channel corresponding to the fundamental wave pulse signal, and using the first echo signal of each channel as the second echo signal of each channel corresponding to the fundamental wave mode; The amplitude of the second echo signal of each channel is acquired, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel.

4. The method according to claim 2, characterized in that If the beam transmission mode is a harmonic mode, determining the calibration coefficients of each channel includes: Receiving the first positive echo signal of each channel corresponding to the positive pulse signal; receiving a first negative-going echo signal of each channel corresponding to the negative-going pulse signal; Superimposing the first positive echo signal and the first negative echo signal of each channel to obtain a second echo signal of each channel corresponding to the harmonic mode; The amplitude of the second echo signal of each channel is acquired, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel.

5. The method according to claim 4, characterized in that Determining the calibration coefficients of the respective channels includes: receiving a first forward echo signal of each channel corresponding to the forward pulse signal, and storing the first forward echo signal of each channel into a first buffer; receiving a first negative echo signal of each channel corresponding to the negative pulse signal, and storing the first negative echo signal of each channel in a second buffer; superimposing the first positive echo signal of each channel in the first buffer and the first negative echo signal of each channel in the second buffer to obtain the second echo signal of each channel corresponding to the harmonic mode, and storing the second echo signal of each channel in a third buffer; The amplitude of the second echo signal of each channel in the third buffer is acquired, and the calibration coefficient of each channel is determined according to the amplitude of the second echo signal of each channel.

6. The method according to any one of claims 1 to 5, characterized in that: Determining the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel includes: Determining an average amplitude of the second echo signals of the respective channels according to the amplitudes of the second echo signals of the respective channels; For each channel, a calibration coefficient of the channel is determined according to a ratio of an amplitude of the second echo signal of the channel to the average amplitude.

7. The method according to claim 1, characterized in that Generating an ultrasonic image according to the third echo signals of each channel includes: The third echo signals of each channel are beam synthesized to obtain a beam synthesized signal; the beam synthesized signal is processed by a field programmable gate array FPGA to form an ultrasonic image.

8. An ultrasonic equipment channel consistency calibration device, characterized in that: The device comprises: A transmitting module, used to determine a beam transmission mode and transmit a pulse signal corresponding to the beam transmission mode; A first determination module is used to receive the first echo signals of each channel corresponding to the pulse signal, and determine the second echo signals of each channel corresponding to the beam transmission mode according to the first echo signals of each channel; A second determination module, configured to obtain the amplitude of the second echo signal of each channel, and determine the calibration coefficient of each channel according to the amplitude of the second echo signal of each channel; The calibration module is used to calibrate the amplitude of the second echo signal of each channel according to the calibration coefficient of each channel to obtain the third echo signal of each channel; and generate an ultrasonic image according to the third echo signal of each channel.

9. An ultrasonic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, for implementing the method steps described in any one of claims 1 to 7 when executing a program stored in a memory.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps described in any one of claims 1 to 7 are implemented.

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