CN102793566B - System and method for generating acoustic radiation force - Google Patents

Abstract

The invention relates to a system and method for generating acoustic radiation force. The system includes: a main control module, which is used to obtain basic parameters and generate control instructions, control loading of basic parameters according to the control instructions to obtain an original pulse signal, and process the original pulse signal to obtain double control pulses with a phase difference of 180 degrees signal; a driving pulse generator, used to receive the double pulse signal, and convert the double control pulse signal into a double driving pulse signal with a phase difference of 0 degrees; a power pulse generator, used to receive the driving pulse signal, And processing the dual drive pulse signal to form a bipolar high voltage pulse signal with a phase difference of 0 degrees and an amplitude twice that of the original pulse signal; an ordinary line array imaging probe is used to receive the bipolar high voltage pulse signal, and generate an acoustic radiation force pulse according to the bipolar high-voltage pulse signal. The above-mentioned system and method for generating acoustic radiation force reduces the cost.

Description

System and method for generating acoustic radiation force

【Technical field】

The invention relates to the field of ultrasonic technology, in particular to a system and method for generating acoustic radiation force.

【Background technique】

With the research and development of ultrasonic elastography, ultrasonic elastography has become an important means to detect tissue elastic modulus. The method of detecting tissue elastic modulus is mainly to generate a low-frequency shear wave in the part and depth of the tissue to be detected, and propagate in the tissue to cause a small displacement of the tissue, and then use a certain frequency of ultrasonic waves to track the shear wave. The displacement caused by the shear wave propagating in the tissue is calculated by collecting the ultrasonic echo signal to calculate the elastic modulus of the tissue.

When detecting tissue elastic modulus, it is first necessary to apply force to the tissue to cause it to deform. The traditional acoustic radiation force pulse imaging technology generates acoustic radiation force, which causes the tissue to deform. To generate the acoustic radiation force, the entire ultrasonic transducer is made of concentric circles and partial spheres. The ultrasonic transducer is bulky and needs to be customized, expensive, and the production cycle is long, resulting in high cost of the entire acoustic radiation force generating device.

【Content of invention】

Based on this, it is necessary to provide an acoustic radiation force generation system, which reduces the cost.

A system for generating acoustic radiation force, comprising:

The main control module is used to obtain basic parameters and generate control instructions, control and load the basic parameters according to the control instructions to obtain an original pulse signal, and process the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees;

a driving pulse generator, configured to receive the double pulse signal, and convert the double control pulse signal into a double driving pulse signal with a phase difference of 0 degrees;

A power pulse generator, configured to receive the driving pulse signal, and process the double driving pulse signal to form a bipolar high-voltage pulse signal with a phase difference of 0 degrees and an amplitude twice that of the original pulse signal;

An ordinary linear array imaging probe is used to receive the bipolar high-voltage pulse signal, and generate an acoustic radiation force pulse according to the bipolar high-voltage pulse signal.

Preferably, the main control module includes a communication-connected main control unit and a programmable logic control unit, the main control unit is used to obtain basic parameters, generate control instructions, and send the basic parameters and control instructions to the A programmable logic control unit; the programmable logic control unit is used to control loading of basic parameters according to the control instruction to obtain an original pulse signal, and process the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees.

Preferably, the basic parameters include the electronic delay time, transmission frequency, number of transmission array elements and transmission duration of each array element of a common line array imaging probe; the programmable logic control unit includes an instruction compiling subunit, an electronic delay control A subunit and a serial pulse generation subunit, the instruction compilation subunit is used to compile and process the control instruction, and control the electronic delay control subunit to load the electronic delay time and transmission frequency according to the compiled control instruction, respectively. The serial pulse generating subunit loads the number of transmitting array elements and the transmitting duration; the electronic delay control subunit is used to generate the original pulse signal in the corresponding electronic channel of each array element according to the electronic delay time and transmitting frequency; The serial pulse generating subunit is used to process the original pulse signal according to the number of transmitting array elements and the transmitting duration to obtain a double control pulse signal with a phase difference of 180 degrees.

Preferably, it also includes a storage module connected to the main control module, the storage module is used to pre-store the electronic delay time of each array element of the common line array imaging probe; Read the electronic delay time of each array element of the common line array imaging probe in the storage module.

Preferably, the calculation formula of the electronic delay time of each array element of the common linear array imaging probe is as follows:

$\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$

Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium.

Preferably, a power supply module is also included, and the power supply module is used to provide electric energy for the main control module, the driving pulse generator, the power pulse generator and the common linear array imaging probe.

In addition, it is also necessary to provide a method for generating acoustic radiation force, which reduces the cost.

A method for generating an acoustic radiation force, comprising the following steps:

Obtaining basic parameters, generating a control instruction, controlling and loading the basic parameters according to the control instruction to obtain an original pulse signal, processing the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees and sending it;

receiving the double pulse signal, and converting the double control pulse signal into a double driving pulse signal with a phase difference of 0 degrees, and sending it;

An ordinary linear array imaging probe is provided, the ordinary array imaging probe receives the double driving pulse signal, and processes the double driving pulse signal to form a phase difference with the original pulse signal of 0 degrees and an amplitude that is twice its Bipolar high-voltage pulse signal and send it;

The bipolar high-voltage pulse signal is received, and an acoustic radiation force pulse is generated according to the bipolar high-voltage pulse signal.

Preferably, the basic parameters include the electronic delay time, transmission frequency, number of transmission array elements and transmission duration of each array element of the ordinary line array imaging probe; according to the control instruction, the basic parameters are loaded to obtain the original pulse signal, and the The steps for processing the original pulse signal to obtain a double pulse signal with a phase difference of 180 degrees and sending it are as follows: according to the electronic delay time and transmission frequency, the original pulse signal is generated in the corresponding electronic channel of each array element; according to the number of transmitting array elements and the transmission frequency Duration Process the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees.

Preferably, it also includes the step of: pre-storing the electronic delay time of each array element of the common linear array imaging probe.

Preferably, the calculation formula of the electronic delay time of each array element of the common linear array imaging probe is as follows:

$\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$

Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium.

The above-mentioned generation system and method of acoustic radiation force obtains the basic parameters, obtains the original pulse signal according to the basic parameters, and obtains the corresponding bipolar high-voltage pulse signal after processing the original pulse signal, and uses an ordinary linear array imaging probe as the ultrasonic transducer The acoustic radiation force pulse is generated according to the bipolar high-voltage pulse signal, and there is no need to customize expensive ultrasonic transducers, which reduces the cost.

【Description of drawings】

Fig. 1 is a structural schematic diagram of a generation system of acoustic radiation force in an embodiment;

Fig. 2 is a schematic diagram of the setting format of the electronic delay time;

Fig. 3 is a schematic diagram of the setting format of the control command;

Fig. 4 is a schematic diagram of the internal structure of the main control module in Fig. 1;

Fig. 5 is a schematic diagram of the internal structure of the programmable logic control unit in Fig. 4;

Fig. 6 is a schematic diagram of generating original pulse signals in m array elements in one embodiment;

Fig. 7 is a schematic structural diagram of a single array element driving circuit in an embodiment;

8 is a schematic diagram of a model that excites an ultrasonic transducer to generate an acoustic radiation force;

Fig. 9 is a schematic diagram of signal waveforms of each signal node of the generation system of the acoustic radiation force;

Fig. 10 is a schematic structural diagram of a system for generating acoustic radiation force in another embodiment;

Fig. 11 is a flowchart of a method for generating acoustic radiation force in an embodiment;

Fig. 12 is a specific flow chart of the steps of controlling loading of basic parameters according to the control instruction to obtain an original pulse signal, processing the original pulse signal to obtain a dual control pulse signal and sending it in an embodiment.

【Detailed ways】

The technical solution will be described in detail below in conjunction with specific embodiments and accompanying drawings.

As shown in FIG. 1 , in one embodiment, an acoustic radiation force generating system includes a main control module 100 , a driving pulse generator 200 , a power pulse generator 300 and a common linear array imaging probe 400 connected in sequence. in,

The main control module 100 is used to obtain basic parameters and generate control instructions, control loading of basic parameters according to the control instructions to obtain original pulse signals, and process the original pulse signals to obtain dual control pulse signals with a phase difference of 180 degrees. Wherein, the basic parameters include the electronic delay time of each array element of the ordinary linear array imaging probe 400 , the transmitting frequency, the number of transmitting array elements and the transmitting duration. The electronic delay time of each array element of the ordinary linear array imaging probe 400 refers to phase electronic delay data between each array element and a designated array element, and the electronic delay time is t. In this embodiment, for the convenience of calculation, the specified array element is usually the central array element of all the array elements participating in the calculation, and the electronic delay time of each array element in the array element array is obtained by using the plane geometric calculation method, and the ordinary line array imaging probe is used as Example to illustrate the calculation formula:

$\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$

Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium.

Len is equal to n*Le or (n+0.5)*Le, or other calculation methods, where Le is the distance between the probe array elements, and the unit is millimeter (mm).

Ln为阵元n到发射焦点位置的声音传播距离。in addition,

Ln is the sound propagation distance from array element n to the emission focus position.

The setting format of the electronic delay time is shown in Figure 2, and D ₀ to D _n-1 represent the 1st to nth electronic delay times.

The setting format of the control command is shown in Figure 3. A ₀ represents the command to control the timing of the transmission signal and the switch of the auxiliary signal, and A ₁ represents the command to control the transmission frequency and transmission duration.

In one embodiment, as shown in FIG. 4 , the main control module 100 includes a main control unit 110 and a programmable logic control unit 120 connected thereto.

Wherein, the main control unit 110 is used to obtain basic parameters, generate control instructions, and send the basic parameters and control instructions to the programmable logic control unit 120 . The main control unit 110 can be a computer or an ARM board or the like. Parameters required by the system are configured on the human-computer interaction interface of the main control unit 110 , such as electronic delay time, transmission frequency, transmission duration, transmission signal timing, and transmission focus depth. The user can set corresponding basic parameters on the human-computer interaction interface, and the main control unit 110 obtains the basic parameters set by the user.

The programmable logic control unit 120 is used to control loading of basic parameters according to the control instruction to obtain an original pulse signal, process the original pulse signal to obtain a double control pulse signal and send it. The programmable logic control unit 120 may be an FPGA (Field-Programmable Gate Array, Field-Programmable Gate Array) control board.

The main control unit 110 and the programmable logic control unit 120 are connected through serial communication, and the main control unit 110 sends control instructions to the programmable logic control unit 120 according to the communication protocol.

As shown in FIG. 5 , the programmable logic control unit 120 includes an instruction compilation subunit 121 , an electronic delay control subunit 123 and a serial pulse generation subunit 125 .

The instruction compilation subunit 121 is used to compile and process the control instructions, and control the electronic delay control subunit 123 to load the electronic delay time and transmission frequency according to the compiled control instructions, and the serial pulse generation subunit 123 loads the number of transmitting array elements and the transmission frequency. duration.

The electronic delay control subunit 123 is used to generate the original pulse signal in the corresponding electronic channel of each array element according to the electronic delay time and transmission frequency. The electronic delay time may be t. If the number of transmitting array elements is m, respectively #1 to #m, as shown in Figure 6, the electronic delay control subunit 123 generates the original pulse signal in the electronic channel of the array element, and the original pulse signal generated by the #1 array element is the same as The original pulse signal generated by #m array element has the same phase, the original pulse signal generated by #2 array element and #m-1 array element has the same phase, the original pulse signal generated by #1 array element and #2 array element The original pulse signal differs by electronic delay t, and so on.

The serial pulse generating subunit 125 is used to process the original pulse signal according to the number of transmitting array elements and the transmitting duration to obtain a double control pulse signal with a phase difference of 180 degrees. The serial pulse generation subunit 125 converts the original pulse signal generated by each array element into a double control pulse signal with a phase difference of 180 degrees.

The driving pulse generator 200 is used for receiving dual control pulse signals, converting the dual control pulse signals into dual driving pulse signals, and sending them to the power pulse generator 300 . The driving pulse generator 200 can adopt the MD1822 (or MD1711) of Supertex Company, and its main function is to convert the level of the TTL control signal inside the integrated circuit to obtain a double driving pulse signal of about 10V. The driving pulse generator 200 couples the dual driving pulse signal to the input port of the subsequent power pulse generator 300 .

The power pulse generator 300 is used to receive the double driving pulse signal, and process the double driving pulse signal to form a bipolar high-voltage pulse signal with a phase difference of 0 degrees and twice the amplitude of the original pulse signal, and send it. The power pulse generator 300 can use the internal power MOS tube of Supertex's TC6320 chip for signal conversion and power amplification, and convert the original unipolar pulse into a bipolar pulse to drive the ultrasonic transducer to obtain accurate working frequency. ultrasound beam. The level value of the positive high voltage HVP driving the ultrasonic transducer ranges from +20V to +100V, and the value of the negative high voltage HVN ranges from -20V to -100V.

The common linear array imaging probe 400 is used to receive the bipolar high voltage pulse signal, and generate the acoustic radiation force pulse according to the bipolar high voltage pulse signal. The ordinary linear array imaging probe 400 is used as an ultrasonic transducer and can be an ordinary B-ultrasound imaging probe. Guided by B-ultrasound images, select a suitable depth, and then emit acoustic radiation force pulses at this depth, and the tissues in this area generate low-frequency oscillating shear waves, and emit ultrasonic tracking beams through the ordinary linear array imaging probe 400 to track the shear waves The tissue elastic modulus at the selected depth can be obtained by calculation.

Figure 7 is a schematic diagram of the basic drive circuit structure of the programmable logic control unit 120, the drive pulse generator 200, the power pulse generator 300 and the common linear array imaging probe 400 in the acoustic radiation force generation system of a single array element.

FIG. 8 is a schematic diagram of a model for exciting an ultrasonic transducer (ordinary linear array imaging probe) to generate acoustic radiation force. The ultrasonic focus 810 transmits ultrasonic waves to the ultrasonic transducer 820 , and the ultrasonic transducer 820 generates an electronic excitation signal 830 .

As shown in FIG. 1 and FIG. 9 , taking the original pulse signal generated by one array element and the programmable logic control unit 120 as an FPGA as an example, the working process and signal waveform of each part are described. The working process of the above acoustic radiation force generation system is: the main control unit 110 sends control instructions and basic parameters, and the FPGA loads the basic parameters to the corresponding electronic delay control subunit 123 and serial pulse generation subunit 125 . The electronic delay control subunit 123 generates the original pulse signal A of the m channel with a set electronic delay time of t, and the serial pulse generation subunit 125 converts the original pulse signal A from the electronic delay control subunit 123 into a phase difference of 180 degrees Double control pulse signal B (FPGA control signal+ and FPGA control signal-shown in FIG. and the drive pulse signal -, the phase difference between the drive pulse signal + and the FPGA control signal + is 180 degrees, and the phase difference between the drive pulse signal + and the drive pulse signal - is 0 degrees; the drive pulse signal C forms bipolarity after passing through the power pulse generator 300 The high-voltage pulse signal D, the amplitude of the bipolar high-voltage pulse signal D is twice the amplitude of the original pulse signal A pulse; the final m-channel bipolar high-voltage pulse signal D is loaded on the ordinary line array imaging probe 400 to generate sound Radiation Force Pulse.

In one embodiment, as shown in FIG. 10 , the system for generating the above-mentioned acoustic radiation force, in addition to including a main control module 100, a driving pulse generator 200, a power pulse generator 300 and a common linear array imaging probe 400 connected in sequence, also includes It includes a storage module 500 and a power module 600 .

The storage module 500 is used for pre-storing the electronic delay time of each array element of the common linear array imaging probe, and the main control module 100 is also used for reading the electronic delay time of each array element of the common linear array imaging probe from the storage module 500 .

The power supply module 600 is used to provide electric energy to the main control module 100 , the driving pulse generator 200 , the power pulse generator 300 and the common linear array imaging probe 400 .

In one embodiment, as shown in FIG. 11 , a method for generating an acoustic radiation force includes the following steps:

Step S100, acquiring basic parameters, generating a control instruction, controlling loading of basic parameters according to the control instruction to obtain an original pulse signal, processing the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees, and sending it.

Among them, the basic parameters include the electronic delay time of each array element of the common line array imaging probe, the emission frequency, the number of emission array elements and the emission duration. The electronic delay time of each array element of an ordinary line array imaging probe refers to phase electronic delay data between each array element and a designated array element, and the electronic delay time is t. In this embodiment, for the convenience of calculation, the specified array element is usually the central array element of all the array elements participating in the calculation, and the electronic delay time of each array element in the array element array is obtained by using the plane geometric calculation method, and the ordinary line array imaging probe is used as Example to illustrate the calculation formula:

$\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$

Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium.

Len is equal to n*Le or (n+0.5)*Le, or other calculation methods, where Le is the distance between the probe array elements, and the unit is millimeter (mm).

Ln为阵元n到发射焦点位置的声音传播距离。in addition,

Ln is the sound propagation distance from array element n to the emission focus position.

The setting format of the electronic delay time is shown in Figure 2, and D ₀ to D _n-1 represent the 1st to nth electronic delay times.

The setting format of the control command is shown in Figure 3. A ₀ represents the command to control the timing of the transmission signal and the switch of the auxiliary signal, and A ₁ represents the command to control the transmission frequency and transmission duration.

Before the step S100, a step is further included: pre-storing the electronic delay time of each array element of the common line array imaging probe. The acquisition of the electronic delay time in the acquisition of the basic parameters in step S100 is specifically to read the pre-stored electronic delay time of each array element of the common line array imaging probe.

In one embodiment, as shown in FIG. 12 , according to the control instruction, the loading of basic parameters is controlled to obtain an original pulse signal, and the steps of processing the original pulse signal to obtain a double control pulse signal and sending it specifically include:

Step S110, generating an original pulse signal in the desired electronic channel of each array element according to the electronic delay time and the transmission frequency.

The electronic delay time may be t. If the number of transmitting array elements is m, respectively #1 to #m, as shown in Figure 6, the original pulse signal is generated in the electronic channel of the array element, the original pulse signal generated by #1 array element is the same as that generated by #m array element The original pulse signal has the same phase, the original pulse signal generated by #2 array element and #m-1 array element has the same phase, the original pulse signal generated by #1 array element and the original pulse signal generated by #2 array element are electron delay t, and so on.

Step S120, processing the original pulse signal according to the number of transmitting array elements and the transmitting duration to obtain a double control pulse signal with a phase difference of 180 degrees.

Step S200, receiving the dual control pulse signal, converting the dual control pulse signal into a dual driving pulse signal, and sending it.

MD1822 (or MD1711) of Supertex Company is used to convert the level to TTL control signal inside the integrated circuit to obtain a driving pulse signal of about 10V.

Step S300, receiving the double driving pulse signal, processing the double driving pulse signal to form a bipolar high-voltage pulse signal with a phase difference of 0 degrees and twice the amplitude of the original pulse signal, and sending it.

The internal power MOS tube of Supertex's TC6320 chip is used for signal conversion and power amplification, and the original unipolar pulse is converted into a bipolar pulse to drive the ultrasonic transducer to obtain an ultrasonic beam with a precise working frequency. The level value of the positive high voltage HVP driving the ultrasonic transducer ranges from +20V to +100V, and the value of the negative high voltage HVN ranges from -20V to -100V.

Step S400, providing an ordinary linear array imaging probe, the ordinary array imaging probe receives the bipolar high voltage pulse signal, and generates an acoustic radiation force pulse according to the bipolar high voltage pulse signal.

The above-mentioned generation system and method of acoustic radiation force obtains the basic parameters, obtains the original pulse signal according to the basic parameters, and obtains the corresponding bipolar high-voltage pulse signal after processing the original pulse signal, and uses an ordinary linear array imaging probe as the ultrasonic transducer The acoustic radiation force pulse is generated according to the bipolar high-voltage pulse signal, and there is no need to customize expensive ultrasonic transducers, which reduces the cost.

In addition, the commonly used main control unit and programmable logic unit are used to process the original pulse signal, further reducing the cost.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A generation system of acoustic radiation force, characterized in that, comprising: The main control module is used to obtain basic parameters and generate control instructions, control and load the basic parameters according to the control instructions to obtain an original pulse signal, and process the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees; a driving pulse generator, configured to receive the dual control pulse signal, and convert the dual control pulse signal into a dual driving pulse signal with a phase difference of 0 degrees; A power pulse generator, configured to receive the driving pulse signal, and process the double driving pulse signal to form a bipolar high-voltage pulse signal with a phase difference of 0 degrees and an amplitude twice that of the original pulse signal; An ordinary linear array imaging probe is used to receive the bipolar high-voltage pulse signal, and generate an acoustic radiation force pulse according to the bipolar high-voltage pulse signal. 2. The generating system of the acoustic radiation force according to claim 1, wherein the main control module comprises a communication connected main control unit and a programmable logic control unit, and the main control unit is used to obtain basic parameters, Generate a control instruction, and send the basic parameters and the control instruction to the programmable logic control unit; the programmable logic control unit is used to control loading of the basic parameters according to the control instruction to obtain an original pulse signal, and send the original pulse signal to the The pulse signal is processed to obtain a double control pulse signal with a phase difference of 180 degrees. 3. The generation system of the acoustic radiation force according to claim 2, wherein the basic parameters include the electronic delay time of each array element of the common line array imaging probe, the emission frequency, the number of emission array elements and the emission duration The programmable logic control unit includes an instruction compilation subunit, an electronic delay control subunit and a serial pulse generation subunit, and the instruction compilation subunit is used to compile and process the control instructions, and according to the compiled control instructions Respectively control the electronic delay control subunit to load the electronic delay time and the transmission frequency, and the serial pulse generation subunit to load the number of emission array elements and the emission duration; the electronic delay control subunit is used to The original pulse signal is generated in the electronic channel corresponding to the emission frequency of each array element; the serial pulse generation subunit is used to process the original pulse signal according to the number of emission array elements and the emission duration to obtain a dual pulse signal with a phase difference of 180 degrees. Control pulse signal. 4. The generation system of the acoustic radiation force according to claim 3, further comprising a storage module connected to the main control module, the storage module is used to pre-store each of the common linear array imaging probes. The electronic delay time of array elements; the main control module is also used to read the electronic delay time of each array element of the common line array imaging probe from the storage module. 5. the generation system of acoustic radiation force according to claim 3, is characterized in that, the computing formula of the electronic delay time of each array element of described common line array imaging probe is as follows: $\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$ Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium. 6. The generation system of acoustic radiation force according to claim 3, further comprising a power supply module, the power supply module is used to provide power for the main control module, drive pulse generator, power pulse generator and common line The array imaging probe provides power. 7. A method for generating an acoustic radiation force, comprising the following steps: Obtaining basic parameters, generating a control instruction, controlling and loading the basic parameters according to the control instruction to obtain an original pulse signal, processing the original pulse signal to obtain a double control pulse signal with a phase difference of 180 degrees and sending it; receiving the dual control pulse signal, and converting the dual control pulse signal into a dual drive pulse signal with a phase difference of 0 degrees, and sending it; receiving the dual driving pulse signal, and processing the dual driving pulse signal to form a bipolar high voltage pulse signal with a phase difference of 0 degrees and twice the amplitude of the original pulse signal, and sending it; An ordinary linear array imaging probe is provided, the ordinary linear array imaging probe receives the bipolar high voltage pulse signal, and generates an acoustic radiation force pulse according to the bipolar high voltage pulse signal. 8. The generation method of acoustic radiation force according to claim 7, characterized in that, said basic parameters include electronic delay time, emission frequency, number of emission array elements and emission duration of each array element of a common line array imaging probe ; according to the control instruction to load the basic parameters to obtain the original pulse signal, process the original pulse signal to obtain the double control pulse signal with a phase difference of 180 degrees and send the steps as follows: according to the electronic delay time and the transmission frequency at each The corresponding electronic channels of the array elements generate original pulse signals; the original pulse signals are processed according to the number of emitting array elements and the emission duration to obtain double control pulse signals with a phase difference of 180 degrees. 9 . The method for generating acoustic radiation force according to claim 8 , further comprising the step of: pre-storing the electronic delay time of each array element of the common line array imaging probe. 10. The generation method of acoustic radiation force according to claim 8, is characterized in that, the computing formula of the electronic delay time of each array element of described common line array imaging probe is as follows: $\mathrm{<span\; class="notranslate">\; t</span>}<span\; class="notranslate">\; =</span><span\; class="notranslate">\; (</span>\sqrt{{\mathrm{<span\; class="notranslate">\; Lh</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; Len</span>}}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; Lh</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; ,</span>$ Among them, t is the electronic delay time, Lh is the depth of the emission focus, Len is the distance from the array element n to the axis of the emission scanning line; C is the propagation speed of the ultrasonic wave in the medium.

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