WO2022213928A1

WO2022213928A1 - Tissue elasticity testing method, apparatus and system

Info

Publication number: WO2022213928A1
Application number: PCT/CN2022/085066
Authority: WO
Inventors: 何琼; 邵金华; 孙锦
Original assignee: 无锡海斯凯尔医学技术有限公司; 北京索瑞特医学技术有限公司
Priority date: 2021-04-06
Filing date: 2022-04-02
Publication date: 2022-10-13
Also published as: CN112998759A

Abstract

A tissue elasticity testing method, apparatus and system. The method comprises: S201, acquiring a contact parameter between a detection probe (101) and an object (103) to be tested, wherein the contact parameter is used for representing the degree of contact between the detection probe (101) and the object (103) to be tested; S202, if the contact parameter meets a first threshold value condition, then controlling the detection probe (101) to emit an ultrasonic signal to the object (103) to be tested and receive an ultrasonic signal from same, so as to determine a target test position of the object to be tested; and S203, if the contact parameter meets a second threshold value condition, controlling the detection probe to perform shear wave excitation on the target test position of the object to be tested, so as to measure elasticity information of the target test position of the object to be tested. By means of the tissue elasticity testing method, an operator can accurately determine the occasions of ultrasonic signal emission and shear wave excitation, thereby improving the stability and accuracy of a measurement result.

Description

Tissue elasticity detection method, device and system

technical field

The embodiments of the present application relate to the technical field of measurement, and in particular, to a tissue elasticity detection method, device, and system.

Background technique

Ultrasound imaging and elastography have a wide range of applications in medical care and other fields. Usually, detection probes are used to transmit ultrasound signals (such as A-, M-, or B-ultrasound signals) for ultrasound image guidance to preliminarily determine whether the current detection position is the detection object. The location and whether there is interference, after the position of the detection object is obtained, shear wave excitation (for example: mechanical wave or shear wave signal) is performed to measure the elasticity of the detection object. Combining the above two detection methods can realize real-time The position of the detection object can be obtained quickly, and the elasticity of the detection object can be obtained through elasticity measurement.

In the prior art, when performing elasticity measurement, the operator usually judges when to emit ultrasonic signals and when to perform shear wave excitation based on personal experience.

However, this method of judging the ultrasonic signal emission and shear wave excitation based on the operator's subjective experience, the ultrasonic imaging and elasticity measurement may cause unstable and inaccurate imaging results or measurement results, requiring the operator to repeatedly operate , reducing the operating efficiency.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a tissue elasticity detection method, device, and system, so as to solve the problem of imaging caused by ultrasonic imaging and elasticity measurement in the prior art due to the way in which the operator's subjective experience judges ultrasonic signal emission and shear wave excitation. Problems with unstable or inaccurate results or measurements.

A first aspect of the embodiments of the present application provides a method for detecting tissue elasticity, including:

acquiring contact parameters between the detection probe and the object to be measured, where the contact parameters are used to represent the degree of contact between the detection probe and the object to be measured;

If the contact parameter satisfies the first threshold condition, then control the detection probe to transmit and receive ultrasonic signals to the object to be measured to determine the target detection position of the object to be measured;

If the contact parameter satisfies the second threshold condition, the detection probe is controlled to perform shear wave excitation at the target detection position of the object to be measured, so as to measure the elasticity information at the target detection position of the object to be measured.

Optionally, the contact parameter includes a pressure value applied by the detection probe to the object to be measured;

If the contact parameter satisfies the first threshold condition, controlling the detection probe to transmit and receive ultrasonic signals to the object to be measured includes:

If the pressure value is greater than the first preset pressure threshold, the detection probe is controlled to transmit and receive ultrasonic signals to the object to be measured.

Optionally, if the contact parameter satisfies the second threshold condition, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured, including:

If the pressure value is greater than a second preset pressure threshold, control the detection probe to perform shear wave excitation to the target detection position of the object to be measured; wherein the first preset pressure threshold is smaller than the second preset pressure threshold Set the pressure threshold.

Optionally, the contact parameter includes a displacement value of the detection probe relative to the object to be measured;

If the displacement value is greater than the first preset displacement threshold, the detection probe is controlled to transmit and receive ultrasonic signals to the object to be measured.

If the displacement value is greater than a second preset displacement threshold, the detection probe is controlled to perform shear wave excitation to the target detection position of the object to be measured; wherein the first preset displacement threshold is smaller than the second preset displacement threshold Set the displacement threshold.

Optionally, the method further includes: determining a refresh rate of the ultrasonic signal according to a refresh parameter set by a user; and controlling the detection probe to transmit and receive ultrasonic signals to the object to be measured according to the refresh rate.

Optionally, the determining the target detection position of the object to be measured includes:

Generate an ultrasonic image of the object to be measured according to the received ultrasonic echo signal, and the ultrasonic image is used to instruct the user to judge the currently detected position;

The target detection position of the object to be detected is determined according to the judgment result.

Further, the method further includes: if the contact parameter satisfies the second threshold condition and a trigger signal is detected, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured, wherein the The trigger signal is generated when it is detected that the user touches the switch on the detection probe or steps on the foot switch connected to the detection probe.

A second aspect of the embodiments of the present application provides a tissue elasticity detection device, including:

an acquisition module, configured to acquire contact parameters between the detection probe and the object to be measured, where the contact parameters are used to represent the degree of contact between the detection probe and the object to be measured;

a control module, configured to control the detection probe to transmit and receive ultrasonic signals to the object to be measured if the contact parameter satisfies a first threshold condition, so as to determine the target detection position of the object to be measured;

The control module is further configured to, if the contact parameter satisfies the second threshold condition, control the detection probe to perform shear wave excitation to the target detection position of the object to be measured, so as to measure the target detection position of the object to be measured. flexibility information.

A third aspect of the embodiments of the present application provides a tissue elasticity detection system, including: a detection probe and a control device; wherein the control device is connected to the detection probe;

The detection probe is provided with a parameter sensor, which is used to acquire the contact parameters between the detection probe and the object to be measured, and send the contact parameters to the control device, and the contact parameters are used to indicate the relationship between the detection probe and the object to be measured. measure the degree of contact between objects;

The control device is configured to: if the contact parameter satisfies the first threshold condition, control the detection probe to transmit and receive ultrasonic signals to the object to be measured, so as to determine the target detection position of the object to be measured; and, If the contact parameter satisfies the second threshold condition, the detection probe is controlled to perform shear wave excitation at the target detection position of the object to be measured, so as to measure the elasticity information at the target detection position of the object to be measured.

A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the first aspect of the embodiments of the present application is implemented Provides tissue elasticity assays.

The embodiments of the present application provide a tissue elasticity detection method, device, system, and storage medium. By acquiring a contact parameter between a detection probe and a to-be-measured contact degree used to measure the degree of contact, and then comparing the contact parameter with a first threshold condition, satisfying the When the condition is met, the ultrasonic signal is triggered to judge the detection position, and after determining the target detection position of the object to be measured, the contact parameter is compared with the second threshold condition, and when the second threshold condition is satisfied, shear wave excitation is performed to perform elasticity measurement, This process avoids the operator's judgment of transmitting ultrasonic signals based on subjective experience, and achieves the effect of energy saving.

At the same time, it also solves the problem of elastic imaging results or measurement instability caused by the operator judging the moment when the excitation shear wave is emitted based on subjective experience, which improves the stability and accuracy of the measurement results and improves the operation efficiency while saving energy.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is an application scenario diagram of a tissue elasticity detection method shown in an exemplary embodiment of the present application;

FIG. 2 is a schematic flowchart of a method for detecting tissue elasticity according to an exemplary embodiment of the present application;

FIG. 3 is a schematic flowchart of a method for detecting tissue elasticity according to another exemplary embodiment of the present application;

4 is a schematic structural diagram of a tissue elasticity detection device shown in an exemplary embodiment of the present application;

5 is a schematic structural diagram of a tissue elasticity detection system according to an exemplary embodiment of the present application;

FIG. 6 is a schematic structural diagram of a measurement device according to an exemplary embodiment of the present application.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this application.

The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to Describe a particular order or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the application described herein can, for example, be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

At present, ultrasound imaging and elastography have a wide range of applications in medical care and other fields. Usually, detection probes are used to transmit ultrasound signals (such as A-, M-, or B-ultrasound signals) for ultrasound image guidance to preliminarily determine whether the current detection position is The position of the detection object and whether there is interference. After obtaining the position of the detection object, shear wave excitation (for example: mechanical wave vibration method or sound radiation force generation method) is performed to measure the elasticity of the detection object, and the above two detection methods are combined. Combined, the position of the detected object can be obtained quickly in real time, and the elasticity of the detected object can be obtained by elastic measurement. In the prior art, when performing elastic measurement again, the operator usually judges when to emit ultrasonic signals and when to perform shear wave excitation based on personal experience. However, this method of judging the transmission of ultrasonic signals and the excitation of shear waves based on the operator's subjective experience, the ultrasonic imaging and elasticity measurement may cause unstable and inaccurate imaging results or measurement results, requiring the operator to repeatedly operate , reducing the operating efficiency.

In view of this defect, the technical solution of the present application mainly lies in: by acquiring the contact parameters used to measure the degree of contact between the detection probe and the object to be tested, and then comparing the contact parameters with the first threshold condition, and triggering the emission of ultrasonic signals when the conditions are met Judging the detection position, and after determining the target detection position of the object to be tested, the contact parameters are compared with the second threshold condition, and when the second threshold condition is satisfied, shear wave excitation is performed to perform elastic measurement, this process avoids the operation The operator judges the emission of ultrasonic signals according to subjective experience, and achieves the effect of energy saving. At the same time, it also solves the problem of the elastic imaging results or measurement instability caused by the operator's judgment based on subjective experience when the excitation shear wave is emitted. The stability and accuracy of the measurement results are improved, and the operation efficiency is improved.

Fig. 1 is an application scenario diagram of the tissue elasticity measurement method shown in an exemplary embodiment of the present application.

As shown in FIG. 1, the main architecture of the application scenario provided by this embodiment includes: a detection probe 101, a control device 102, and a medium to be measured 103; the detection probe 101 applies appropriate pressure to the medium to be measured, and the control device 102 controls the detection probe to The medium to be measured 103 transmits ultrasonic signals and excitation shear waves, and receives ultrasonic signals returned by the medium to be measured.

The control device may be, but not limited to, a computer, a microprocessor, or a central processing unit.

FIG. 2 is a schematic flowchart of a method for detecting tissue elasticity according to an exemplary embodiment of the present application. The execution subject of the method provided in this embodiment may be the control device in the embodiment shown in FIG. 1 .

As shown in FIG. 2 , the method provided in this embodiment may include the following steps.

S201: Acquire a contact parameter between a detection probe and an object to be measured, where the contact parameter is used to indicate a degree of contact between the detection probe and the object to be measured.

Specifically, the relevant sensors can be installed on the detection probe in advance. When the operator needs to detect the object to be tested, the operator will touch the detection probe to the object to be tested and gradually apply pressure. The sensor collects contact parameters in real time. contact state between objects.

Exemplarily, a displacement sensor may be installed on the detection probe, and the displacement value of the detection probe relative to the object to be measured is collected in real time during the operator's measurement process, and the displacement value is used to measure the contact state between the detection probe and the object to be measured, indicating that the The operator depresses the probe resulting in the distance between the probe surface and the original position of the tissue surface to be measured. It can also be a pressure sensor that detects pressure values, or can detect contact state parameters such as stress and strain.

S202 , if the contact parameter satisfies a first threshold condition, control the detection probe to transmit an ultrasonic signal to the object to be measured, so as to determine a target detection position of the object to be measured.

The first threshold condition is set according to actual requirements.

Specifically, as the pressure exerted by the operator on the object to be measured increases, the value of the contact parameter will also increase. When the contact parameter reaches the preset first threshold condition, it means that the ultrasonic signal emission threshold is reached. At this time, the ultrasonic image formed by transmitting the ultrasonic signal is clearer than the ultrasonic image formed by transmitting the ultrasonic signal at other times. Therefore, the operator can accurately determine the target detection position of the object to be measured.

S203, if the contact parameter satisfies the second threshold condition, control the detection probe to perform shear wave excitation to the target detection position of the object to be measured, to measure the elasticity information at the target detection position of the object to be measured.

The second threshold condition may be set according to actual requirements.

Specifically, after acquiring the target detection position of the object to be tested, the detection probe continues to apply pressure to the target detection position of the object to be tested, so the value of the contact parameter will continue to increase. When the contact parameter satisfies the second threshold condition, it means that the The conditions for elastic measurement are satisfied, and the elastic value obtained by shear wave excitation measurement at this time is more accurate than the elastic value obtained by shear wave excitation measurement at other times.

It should be noted that the process of performing shear wave excitation to measure the elasticity at the target detection position of the object to be measured includes: transmitting low-frequency vibration signals and ultrasonic signals to the target detection position, collecting ultrasonic signals returned from the object to be measured, and The ultrasonic signal is processed, and the elastic information at the target detection position of the object to be measured is obtained by analytical calculation. The low-frequency vibration signal may be, but is not limited to, a signal generated by shear wave excitation such as mechanical vibration excitation or acoustic radiation force excitation.

In this embodiment, the contact parameters used to measure the degree of contact between the detection probe and the object to be tested are obtained, and then the contact parameters are compared with the first threshold condition, and when the conditions are met, the ultrasonic signal is triggered to transmit an ultrasonic signal to judge the detection position, and After the target detection position of the object to be measured is determined, the contact parameters are compared with the second threshold condition, and when the second threshold condition is satisfied, shear wave excitation is performed and then elasticity measurement is performed. This process avoids the operator's judgment based on subjective experience. signal to achieve the effect of energy saving. At the same time, it also solves the problem of elastic imaging results or measurement instability caused by the operator judging the moment when the excitation shear wave is emitted based on subjective experience, which improves the stability and accuracy of the measurement results and improves the operation efficiency while saving energy.

FIG. 3 is a schematic flowchart of a method for detecting tissue elasticity according to another exemplary embodiment of the present application. This embodiment further describes the method for detecting tissue elasticity in detail on the basis of the embodiment shown in FIG. 2 .

As shown in FIG. 3 , the method provided in this embodiment may include the following steps.

S301, acquiring a pressure value and/or a displacement value between a detection probe and an object to be measured, where the pressure value and/or displacement value are used to indicate the degree of contact between the detection probe and the object to be measured;

Specifically, a pressure sensor and/or a displacement sensor can be installed on the detection probe in advance. When the operator needs to detect the object to be measured, the operator will touch the detection probe to the object to be measured and gradually apply pressure. The pressure value and/or relative displacement value can measure the contact state between the detection probe and the object to be measured.

S302, if the pressure value is greater than a first preset pressure threshold, and/or the displacement value is greater than a first preset displacement threshold, control the detection probe to transmit an ultrasonic signal to the object to be measured;

S303, according to the refresh parameter set by the user, adjust the refresh speed of the ultrasonic signal;

S304, receiving the ultrasonic echo signal of the object to be measured;

S305, generating an ultrasonic image of the object to be measured according to the ultrasonic echo signal, where the ultrasonic image is used to instruct the operator to judge the currently detected position;

S306, determine the target detection position of the object to be measured according to the judgment result;

In steps S302-S306, both the first preset pressure threshold and the first preset displacement threshold can be set and adjusted according to actual needs. For example, an accurate pressure that can be used as a trigger condition for transmitting ultrasonic signals can be determined according to a large amount of historical detection data. Threshold and/or displacement threshold.

Specifically, as the pressure applied by the detection probe to the object to be measured increases, the pressure value and/or the displacement value also increases. When the pressure value is greater than the first preset pressure threshold, and/or all When the displacement value is greater than the first preset displacement threshold, it means that the time to transmit the ultrasonic signal is reached. At this time, the ultrasonic signal is transmitted to form an ultrasonic image, which assists the operator in image guidance to accurately determine the target detection position of the object to be measured.

In one embodiment, the transmitted ultrasound signal may be an A-ultrasound signal, an M-ultrasound signal, or a B-ultrasound signal, wherein the refresh rate of the M-ultrasound signal can be regulated in real time by setting parameters, for example, the refresh rate of the M-ultrasound signal according to the application requirements It can be dozens of frames per second, or it can be hundreds of frames per second.

It can be understood that, in the specific implementation, the operator can judge the time of transmitting the ultrasonic signal only according to the pressure threshold condition, or judge the time of transmitting the ultrasonic signal only according to the displacement threshold condition, and can also use the pressure threshold condition and the displacement threshold. The condition also determines the time to transmit the ultrasonic signal.

S307, if the pressure value is greater than the second preset pressure threshold, and/or the displacement value is greater than the second preset displacement threshold, control the detection probe to perform shear wave excitation to the target detection position of the object to be tested , to obtain elastic measurement results;

Wherein, both the second preset pressure threshold and the second preset displacement threshold can be set and adjusted according to actual needs. For example, the precise pressure threshold and/or the trigger condition for shear wave excitation can be determined according to a large amount of historical detection data. or displacement threshold;

Specifically, after the probe triggers the ultrasonic transmission signal, determines the target detection position of the object to be tested, and determines that there is no interference from other objects at the position, the detection probe continues to apply pressure to the target detection position of the object to be tested. The pressure value is greater than the second preset pressure threshold value and/or the displacement value collected by the displacement sensor is greater than the second preset displacement threshold value, it is determined that the elastic measurement conditions are met, and the elastic value obtained by the shear wave excitation measurement at this time is compared to The elastic values obtained by shear wave excitation measurements at other times are more accurate.

In the specific implementation, the operator can judge the time for shear wave excitation only according to the pressure threshold condition, or judge the time for shear wave excitation only according to the displacement threshold condition, and can also use the pressure threshold condition and the displacement threshold condition At the same time, determine the time for shear wave excitation. It can be understood that the trigger condition for judging the shear wave excitation should be consistent with the trigger condition for judging the emission of the ultrasonic signal. The shear wave excitation is determined by the preset pressure threshold; if the operator simultaneously determines to transmit the ultrasonic signal according to the first preset pressure threshold and the first preset displacement threshold, then the second preset pressure threshold and the second preset The displacement threshold is also determined for shear wave excitation.

It should be noted that the above-mentioned first preset pressure threshold is smaller than the second preset pressure threshold. When the pressure value between the detection probe and the object to be measured reaches the first preset pressure threshold, the transmission and reception of ultrasonic signals are performed. After the operator determines the target detection position according to the ultrasonic image, he continues to increase the pressure between the detection probe and the object to be measured. When the pressure value reaches the second preset pressure threshold, shear wave excitation is performed to measure the pressure of the target detection position. elasticity.

Exemplarily, assuming that the first preset pressure threshold is 5N and the second preset pressure threshold is 20N, when the pressure value between the detection probe and the object to be measured reaches 5N but does not exceed 20N, the detection probe is automatically triggered to emit and receive ultrasound signals. When the pressure value between the detection probe and the object to be tested reaches 20N, the detection probe is triggered to vibrate and transmit shear waves. At the same time, the detection probe still transmits and receives ultrasonic signals.

It should be noted that when the pressure value between the detection probe and the object to be measured reaches the first upper limit value (such as 60N), stop transmitting shear waves, and when it reaches the second upper limit value (such as 100N), stop transmitting ultrasonic waves signal, wherein the first upper limit value is less than the second upper limit value.

Similarly, if the displacement is used as the judgment condition, the first preset displacement threshold is smaller than the second preset displacement threshold. In some embodiments, when the shear wave excitation is triggered by satisfying the second threshold condition, the operator can trigger the vibration of the detection probe by stepping on the foot switch connected to the detection probe or by touching the membrane switch on the detection probe , performing shear wave excitation for elastic measurements. If it is only detected that the operator steps on the foot switch or manually turns on the membrane switch on the detection probe, but the second threshold condition is not met, the detection probe does not emit shear waves.

This embodiment not only avoids the problem of unstable imaging results or measurement caused by the operator judging the timing of ultrasonic signal emission and shear wave excitation based on subjective experience, but also improves the stability and accuracy of measurement results and improves operation efficiency ; Further, by adjusting the refresh frequency of the M-ultrasonic signal, resources are saved, unnecessary waste is reduced, and the service life of the detection probe is improved.

FIG. 4 is a schematic structural diagram of a tissue elasticity detection device according to an exemplary embodiment of the present application.

As shown in FIG. 4 , the device provided in this embodiment includes: an acquisition module 41 and a control module 42; wherein, the acquisition module 41 is used to acquire contact parameters between the detection probe and the object to be measured, and the contact parameters are used to represent The degree of contact between the detection probe and the object to be measured; the control module 42 is configured to control the detection probe to transmit and receive ultrasonic signals to the object to be measured if the contact parameter satisfies the first threshold condition , to determine the target detection position of the object to be tested; the control module 42 is further configured to control the detection probe to cut to the target detection position of the object to be tested if the contact parameter satisfies the second threshold condition wave excitation to measure the elasticity information at the target detection position of the object to be measured.

Optionally, the contact parameter includes a pressure value applied by the detection probe to the object to be measured; the control module 42 is specifically configured to: if the pressure value is greater than a first preset pressure threshold, control the detection probe Ultrasonic signals are transmitted and received to the object to be measured.

Further, the control module 42 is further configured to: control the detection probe to perform shear wave excitation to the target detection position of the object to be measured when the pressure value is greater than a second preset pressure threshold, wherein the The first preset pressure threshold is smaller than the second preset pressure threshold.

Optionally, the contact parameter includes a displacement value of the detection probe relative to the object to be measured; the control module 42 is specifically configured to: if the displacement value is greater than a first preset displacement threshold, control the detection probe to move toward the object to be measured. The object to be tested transmits and receives ultrasonic signals.

Further, the control module 42 is further configured to: when the displacement value is greater than the second preset displacement threshold, control the detection probe to perform shear wave excitation to the target detection position of the object to be measured, wherein the The first preset displacement threshold is smaller than the second preset displacement threshold.

Optionally, the control module 42 is further configured to: determine the refresh rate of the ultrasonic signal according to the refresh parameter set by the user; control the detection probe to transmit and receive the ultrasonic signal to the object to be measured according to the refresh rate.

Further, the control module 42 is specifically configured to: generate an ultrasonic image of the object to be measured according to the received ultrasonic echo signal, and the ultrasonic image is used to instruct the user to judge the currently detected position; Describe the target detection position of the object to be measured.

In this embodiment, for the parts that are not described in detail for the specific function implementation of each module, reference may be made to the descriptions in the related method embodiments.

FIG. 5 is a schematic structural diagram of a tissue elasticity detection system according to an exemplary embodiment of the present application.

As shown in FIG. 5 , the system provided in this embodiment includes: a detection probe 51 and a control device 52; wherein, the control device is connected to the detection probe; the detection probe is provided with a parameter sensor 511 for acquiring the detection probe contact parameters with the object to be measured, and send the contact parameters to the control device, where the contact parameters are used to indicate the degree of contact between the detection probe and the object to be measured; the control device is used for : if the contact parameter satisfies the first threshold condition, then control the detection probe to transmit and receive ultrasonic signals to the object to be measured to determine the target detection position of the object to be measured; and, if the contact parameter satisfies The second threshold condition is to control the detection probe to perform shear wave excitation to the target detection position of the object to be measured, so as to measure the elasticity information at the target detection position of the object to be measured.

Further, the system provided in this embodiment further includes a display unit 521 , and the display unit may be disposed on the control device 52 to be integrated with the control device, as shown in FIG. 5 . In another possible embodiment, the display unit may also be a separate display, and the display is connected to the control device in a wired or wireless manner.

Further, in the system provided by this embodiment, the detection probe 51 is provided with a membrane switch 512 for controlling the detection probe to perform shear wave excitation. The membrane switch is ergonomically arranged at the handshake of the detection probe, which is convenient for the operator to touch. operate.

Further, referring to FIG. 5 , the system provided in this embodiment further includes a foot switch 53 , the foot switch is connected with the detection probe, and is used to control the detection probe to perform shear wave excitation.

It should be noted that, the control device in this embodiment may be, but not limited to, a computer, a microprocessor, or a central processing unit.

Optionally, the contact parameter includes a pressure value applied by the detection probe to the object to be measured; the control device 52 is specifically configured to: if the pressure value is greater than a first preset pressure threshold, control the detection probe Ultrasonic signals are transmitted and received to the object to be measured.

Further, the control device 52 is further configured to: control the detection probe to perform shear wave excitation to the target detection position of the object to be measured when the pressure value is greater than a second preset pressure threshold, wherein the The first preset pressure threshold is smaller than the second preset pressure threshold.

Optionally, the contact parameter includes a displacement value of the detection probe relative to the object to be measured; the control device 52 is specifically configured to: if the displacement value is greater than a first preset displacement threshold, control the detection probe to move toward the object to be measured. The object to be tested transmits and receives ultrasonic signals.

Further, the control device 52 is further configured to: control the detection probe to perform shear wave excitation to the target detection position of the object to be measured when the displacement value is greater than a second preset displacement threshold, wherein the The first preset displacement threshold is smaller than the second preset displacement threshold.

Optionally, the control device 52 is further configured to: determine a refresh rate of the ultrasonic signal according to a refresh parameter set by a user; and control the detection probe to transmit and receive ultrasonic signals to the object to be measured according to the refresh rate.

Further, the control device 52 is specifically configured to: receive an ultrasonic signal returned by the object to be measured; generate an ultrasonic image of the object to be measured according to the returned ultrasonic signal, and the ultrasonic image is used to instruct the target person to The currently detected position is judged; the target detection position of the object to be tested is determined according to the judgment result.

This embodiment not only avoids the operator's judgment of transmitting ultrasonic signals based on subjective experience, and achieves the effect of energy saving, but also solves the problem of elastography results or measurement inconsistencies caused by the operator's judgment based on subjective experience when the excitation shear wave is emitted. The problem of stability improves the stability and accuracy of the measurement results while saving energy, and improves the operation efficiency; further, when the corresponding parameters of the sensor meet the corresponding preset threshold conditions, the operator can step on the set foot switch. Or touch the membrane switch on the probe to trigger the probe to vibrate, that is, to perform shear wave excitation, which can facilitate the operation of the operator, keep the probe stable, and further improve the stability and correctness of the measurement results and the operation efficiency.

FIG. 6 is a schematic diagram of a hardware structure of a measurement device provided by an embodiment of the present application. As shown in FIG. 6 , the measurement device 60 provided in this embodiment includes: at least one processor 601 and a memory 602 . The processor 601 and the memory 602 are connected through a bus 603 .

In a specific implementation process, the at least one processor 601 executes the computer-executed instructions stored in the memory 602, so that the at least one processor 601 executes the tissue elasticity detection method in the foregoing method embodiments.

For the specific implementation process of the processor 601, reference may be made to the foregoing method embodiments, and the implementation principles and technical effects thereof are similar, and details are not described herein again in this embodiment. In the above-mentioned embodiment shown in FIG. 6, it should be understood that the processor may be a central processing unit (English: Central Processing Unit, abbreviated as: CPU), or other general-purpose processors, digital signal processors ( English: Digital Signal Processor, referred to as: DSP), application specific integrated circuit (English: Application Specific Integrated Circuit, referred to as: ASIC) and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the invention can be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

The memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one disk memory.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, or the like. The bus can be divided into address bus, data bus, control bus and so on. For convenience of representation, the buses in the drawings of the present application are not limited to only one bus or one type of bus.

Another embodiment of the present application provides a computer-readable storage medium, where computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the tissue elasticity in the foregoing method embodiments is implemented Detection method.

The above-mentioned computer-readable storage medium, the above-mentioned readable storage medium can be realized by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable Programmable Read Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk. A readable storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

An exemplary readable storage medium is coupled to the processor such that the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium may be located in an application specific integrated circuit (Application Specific Integrated Circuits, ASIC for short). Of course, the processor and the readable storage medium may also exist in the device as discrete components.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by program instructions related to hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps including the above method embodiments are executed; and the foregoing storage medium includes: ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims

A method for detecting tissue elasticity, comprising:

acquiring contact parameters between the detection probe and the object to be measured, where the contact parameters are used to represent the degree of contact between the detection probe and the object to be measured;

If the contact parameter satisfies the first threshold condition, controlling the detection probe to transmit and receive ultrasonic signals to the object to be measured, so as to determine the target detection position of the object to be measured;

If the contact parameter satisfies the second threshold condition, the detection probe is controlled to perform shear wave excitation at the target detection position of the object to be measured, so as to measure the elasticity information at the target detection position of the object to be measured.
The method according to claim 1, wherein the contact parameter comprises a pressure value applied by a detection probe to the object to be measured;

If the contact parameter satisfies the first threshold condition, controlling the detection probe to transmit and receive ultrasonic signals to the object to be measured includes:

If the pressure value is greater than the first preset pressure threshold, the detection probe is controlled to transmit and receive ultrasonic signals to the object to be measured.
The method according to claim 2, wherein, if the contact parameter satisfies the second threshold condition, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured, comprising:

If the pressure value is greater than the second preset pressure threshold, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured;

Wherein, the first preset pressure threshold is smaller than the second preset pressure threshold.
The method according to claim 1, wherein the contact parameter comprises a displacement value of the detection probe relative to the object to be measured;

If the contact parameter satisfies the first threshold condition, controlling the detection probe to transmit and receive ultrasonic signals to the object to be measured includes:

If the displacement value is greater than the first preset displacement threshold, the detection probe is controlled to transmit and receive ultrasonic signals to the object to be measured.
The method according to claim 4, wherein, if the contact parameter satisfies the second threshold condition, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured, comprising:

If the displacement value is greater than the second preset displacement threshold value, controlling the detection probe to perform shear wave excitation to the target detection position of the object to be measured;

Wherein, the first preset displacement threshold is smaller than the second preset displacement threshold.
The method according to any one of claims 1-5, characterized in that, further comprising:

Determine the refresh rate of the ultrasonic signal according to the refresh parameter set by the user;

The detection probe is controlled to transmit and receive ultrasonic signals to the object to be measured according to the refresh rate.
The method according to any one of claims 1-5, wherein the determining the target detection position of the object to be measured comprises:

Generate an ultrasonic image of the object to be measured according to the received ultrasonic echo signal, where the ultrasonic image is used to instruct the user to judge the currently detected position;

The target detection position of the object to be detected is determined according to the judgment result.
The method according to any one of claims 1-5, characterized in that, further comprising:

If the contact parameter satisfies the second threshold condition and a trigger signal is detected, the detection probe is controlled to perform shear wave excitation to the target detection position of the object to be tested, wherein the trigger signal is detected when the user touches the object. Generated when the switch on the detection probe described above is pressed or the foot switch connected to the detection probe is pressed.
A tissue elasticity detection device, characterized in that it includes:

an acquisition module, configured to acquire contact parameters between the detection probe and the object to be measured, where the contact parameters are used to represent the degree of contact between the detection probe and the object to be measured;

a control module, configured to control the detection probe to transmit and receive ultrasonic signals to the object to be measured if the contact parameter satisfies a first threshold condition, so as to determine the target detection position of the object to be measured;

The control module is further configured to, if the contact parameter satisfies the second threshold condition, control the detection probe to perform shear wave excitation to the target detection position of the object to be measured, so as to measure the target detection position of the object to be measured. flexibility information.
A tissue elasticity detection system, comprising: a detection probe and a control device; wherein the control device is connected to the detection probe;

The detection probe is provided with a parameter sensor, which is used to acquire the contact parameters between the detection probe and the object to be measured, and send the contact parameters to the control device, and the contact parameters are used to indicate the relationship between the detection probe and the object to be measured. measure the degree of contact between objects;

The control device is configured to: if the contact parameter satisfies the first threshold condition, control the detection probe to transmit and receive ultrasonic signals to the object to be measured, so as to determine the target detection position of the object to be measured; and, If the contact parameter satisfies the second threshold condition, the detection probe is controlled to perform shear wave excitation at the target detection position of the object to be measured, so as to measure the elasticity information at the target detection position of the object to be measured.
A computer-readable storage medium, wherein computer-executable instructions are stored in the computer-readable storage medium, and when a processor executes the computer-executable instructions, the computer-executable instructions as claimed in any one of claims 1 to 7 are implemented. Tissue elasticity assay.