WO2016033752A1

WO2016033752A1 - Elasticity measurement and detection method and system

Info

Publication number: WO2016033752A1
Application number: PCT/CN2014/085821
Authority: WO
Inventors: 李双双
Original assignee: 深圳迈瑞生物医疗电子股份有限公司
Priority date: 2014-09-03
Filing date: 2014-09-03
Publication date: 2016-03-10
Also published as: CN110368031A; CN110432926B; CN106572838B; CN110368031B; CN106572838A; CN110432926A

Abstract

An elasticity measurement and detection method and an elasticity measurement and detection system. The method comprises the following steps: generating a shear wave in a target region (S101); emitting a tracking pulse to the target region and acquiring echo data of the tracking pulse (S102); performing data calculation according to the echo data, so as to acquire a measurement calculation result (S103); and displaying the measurement calculation result (S104). In the method, an operator can acquire through calculation related parameters for reflecting the elasticity of a tissue, without the need of controlling the strength of pressing a probe, thereby ensuring the repeatability and stability of the measurement.

Description

Elastic measurement detection method and system

The invention relates to the field of medical detection, and in particular to an elastic measurement and detection method and system. Background technique

Ultrasound elastography is used to reflect the elasticity or softness of tissue. It is used more and more in the auxiliary detection, benign and malignant discrimination, and prognosis evaluation of tissue cancer. The conventional superacoustic imaging method mainly produces a certain deformation by pressing the tissue by the probe, and then calculates and images the parameters related to the tissue elasticity such as strain and strain rate, and indirectly reflects the difference in elasticity between different tissues in the region of interest. However, since the correspondence between the strain parameters and the elastic parameters is affected by the magnitude of the pressure, even the same tissue, or different tissues with the same elastic parameters, if the applied pressure is different, the strain generated is different, which may cause Misjudgment of the difference in elasticity. The operator needs to control the pressure of each operation consistently and maintain the stability of the hook, which makes the image repeatability and stability challenge. Summary of the invention

An elastic measurement detection method and system with stable measurement results that are not limited by operational requirements are provided.

An elastic measurement detection method, comprising the following steps,

Producing shear waves in the target area;

Transmitting a tracking pulse to the target area and receiving echo data of the tracking pulse; performing data calculation according to the echo data to obtain a measurement calculation result;

The measurement calculation result is displayed.

Further, the elastic measurement detecting method further comprises the following steps of generating a shear wavefront in the target region,

And transmitting a reference pulse to the target area, receiving echo information of the reference pulse in the target area, and acquiring echo data of the reference pulse.

Further, when performing data calculation according to the echo data to obtain a measurement calculation result, The data calculation acquires the displacement data, and when the displacement data is acquired, the following steps are included,

Taking echo data at any time in any position in the target area as reference echo data; dividing the reference echo data into multi-segment reference echo core data, and setting a reference echo core data center of the reference echo core data ;

Obtaining a position where the cross-correlation between the echo data of each time and the reference echo core data center is the largest, and taking the difference between the position with the largest cross-correlation and the center position of the reference echo core data for each moment. Displacement data.

Further, when the echo data at any time in any position in the target area is taken as the reference echo data, the reference echo data uses the echo data of the tracking pulse at any time or the reference at any time. Pulse echo data.

Further, when data calculation is performed according to the echo data to obtain a measurement calculation result, the particle velocity at different times is obtained by data calculation, and the following steps are included when acquiring the particle velocity,

After obtaining the displacement data of the tissue of the target area, the displacement data of the same position is taken at different times; the gradient is obtained along the time direction to obtain the particle velocity curve at different times at the position.

Further, when data calculation is performed according to the echo data to obtain a measurement calculation result, the propagation distance of the shear wave in a period of time is obtained by data calculation, and the following steps are included when the propagation distance is obtained for calculation.

Taking displacement data of each moment corresponding to any position in the target area, forming a displacement-time curve, and finding a time corresponding to the peak on the curve;

Obtaining a displacement-transverse position curve or a particle velocity-transverse position curve in a period of time before and after the time corresponding to the peak in the target area, a displacement-lateral position curve or a particle velocity-horizontal position for each time in the time period The curve performs cross-correlation judgment to obtain the propagation distance of the shear wave in the time period.

Further, when data calculation is performed according to the echo data to obtain a measurement calculation result, a Young's modulus ratio between different target regions is obtained, and when the Young's modulus ratio is obtained, the following formula is satisfied.

d _x ² ld ₂ ²

Where di, ί ₇ represent the propagation distance of the shear wave for a different target region within a period of time 7 ^, and c represents the propagation velocity of the shear wave. Further, when the measurement calculation result is displayed, the wavefront film map, the propagation distance distribution map, the propagation time distribution map, the propagation distance curve diagram, the propagation distance diagram, the elastic ratio diagram, the squared ratio of the propagation velocity, and the propagation distance are used. At least one of the squared ratio diagrams.

Further, when the measurement calculation result is displayed, a gray scale or color coding mode is used. An elastic measurement and detection system includes an ultrasonic probe, a control module, a signal processing module, a calculation module and a display device, wherein the ultrasonic probe is provided with a transceiver module, a transceiver module, a signal processing module, a calculation module and a display device of the ultrasonic probe Connected in sequence, the control module is connected to the transceiver module,

The transceiver module is configured to transmit a push pulse, a tracking pulse and a reference pulse, and receive echo data of the tracking pulse and the reference pulse;

The control module is configured to control the transceiver module to transmit a push pulse, a tracking pulse, and a reference pulse;

The signal processing module is configured to perform signal preprocessing on the echo data;

The calculation module is configured to process and calculate a signal output by the beam synthesis;

The display device is configured to display an elastic image generated by the calculation module.

Further, the calculating module includes:

a particle velocity calculation unit for calculating a particle velocity of the target tissue;

a propagation distance calculation unit for calculating a propagation distance of the shear wave;

The Young's modulus ratio calculation unit is used to calculate the Young's modulus ratio Young's modulus ratio of the target tissue.

The method of the invention can calculate and acquire related parameters reflecting the elasticity of the tissue without the operator controlling the strength of pressing the probe, so that the repeatability and stability of the measurement are ensured.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flow chart of an elastic measurement detecting method provided by a first preferred embodiment; FIG. 2 to FIG. 4 are shear wave transmissions generated by the elastic measurement detecting method provided by the first preferred embodiment. a schematic diagram of the propagating wave emission of the broadcast;

5 is a schematic diagram of displacement calculation in the elastic measurement detecting method provided by the first preferred embodiment; FIG. 6 is a schematic diagram of a propagation large off-time curve in different target regions in the elastic measurement detecting method provided by the first preferred embodiment;

7 is a schematic flow chart of an elastic measurement detecting method provided by a second preferred embodiment;

Fig. 8 is a schematic view showing the configuration of an elastic measurement detecting system provided by the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

Referring to FIG. 1, a first preferred embodiment of the present invention provides an elastic measurement and detection method, including the following steps:

Step S101, generating a shear wave in the target area. In this embodiment, the target area can be determined according to the demand of the elastic measurement, and the target area is rearward to transmit a push pulse (push pulse) to the target area to generate a shear wave. The target area can be selected and determined by any suitable method, such as a conventional two-dimensional B mode imaging, a conventional elastography E mode, and the like, and various types of applicable imaging detection methods are used for preliminary detection, and may also be selected according to detection requirements.

The number of target areas may be one or more. When the number of target areas is plural, the respective longitudinal depths or lateral positions of the plurality of target areas may be different. It can be understood that when measuring a plurality of target regions at the same time, an average distance ratio between the plurality of target regions can be obtained by a subsequent step, thereby reflecting a difference in elasticity between the plurality of target regions.

Once the target area has been determined, a specific pulse can be transmitted through the probe near the target area, ie, the artery is pushed. The push pulse emission duration is longer than a conventional ultrasonic emission pulse, on the order of tens to hundreds of microseconds. The push pulse may generate a shear wave source at the emission position, the shear wave is emitted from the shear wave source and propagates in a direction different from the direction in which the push pulse is emitted.

As shown in FIG. 2 to FIG. 4, in the embodiment, the driving pulse may be transmitted by focusing emission or non-focusing, and the driving pulse may also be used for transmitting once or continuously for multiple times, and may also be adjusted. The depth of focus or/and the lateral position of the multiple successive shots are formed to form a specific shear wave propagation direction and broaden the propagation range of the shear wave.

When a plurality of target areas are confirmed and set, each of the target areas may emit a plurality of sets of push pulses having the same or different emission focus modes, consecutive number of shots, and focus positions, each set of push pulses being transmitted for the respective target areas and in the target area Shear waves are generated nearby to analyze and calculate the echo data of the corresponding shear wave. Since the push pulse emission requires a large sound field energy to increase the shear wave intensity, it may take a certain time between multiple sets of push pulse emission to ensure energy safety, the intensity of each group of push pulses and the emission of each group of push pulses. The time interval is predetermined by the system.

Multiple target areas can also share the same set of push pulse transmissions, that is, after a set of push pulses are transmitted, shear wave propagation occurs, and shear wave propagation passes through multiple target areas, and then echoes of the plurality of target regions passing through are acquired. The data is analyzed and calculated. The system can determine whether a common push pulse emission is required depending on the depth of the target area and the distance of the lateral position.

When multiple sets of pulses are transmitted into the target area, each set of shots may include multiple consecutive shots, each of which may have a different focus position, longitudinal depth, and lateral position. The direction of propagation and the propagation width of the shear wave generated by each of the shots can be controlled by adjusting the position of each shot and/or the interval between shots. The calculation results of multiple sets of shear wave propagation in different directions or different positions can be combined and weighted to increase the accuracy of the results.

Step S102, transmitting a tracking pulse (tracking wave) to the target area and receiving its echo information, and acquiring echo data.

In this step, the echo data refers to echo data of a tracking pulse of a tracking pulse. After the push pulse is generated to the target area and the shear wave is generated, the tracking pulse is transmitted and its echo information is received, thereby obtaining echo data of the tracking pulse in a range of propagation within a target area for a period of time. The transmission interval of the tracking pulse can be predetermined. The echo data of the tracking pulse records the tissue information at each position within the above-mentioned propagation range during the shear wave propagation.

Step S103: Perform data calculation according to the echo data, and obtain a measurement calculation result. In this embodiment, the data can be calculated by tracking the echo data of the pulse, and the calculation results of the displacement, the particle velocity, the propagation distance of the shear wave at each moment in a period of time, and the propagation time of the shear wave within a certain distance can be obtained, and Show it.

As shown in Figure 5, when the shear wave passes through the target area, the corresponding position of the tissue of the target area is generated. Longitudinal displacement, ie positional change. The displacement calculation refers to calculating the tissue displacement of the target area and acquiring displacement data. The displacement calculation can further include the following steps:

In step S1031, echo data at any time in any position in the target area is taken as the reference echo data.

Step S1032: Segment the reference echo data, each segment is set as a reference echo core data (kernel), and set a reference echo core data center of the reference echo core data. It will be appreciated that the interval between the length of each of the reference echo core data and the reference echo core data center may be predetermined by the system.

Step S1033: Obtain a position where the cross-correlation between the echo data of each time and the reference echo core data center is the largest, and obtain the difference between the position with the largest cross-correlation and the center position of the reference echo core data. Displacement data for each moment.

In this step, the difference between the position of the echo data at each time and the position of the reference echo core data center and the center position of the reference echo core data is the reference echo core data position. Corresponding displacement. In this step, the echo data of the tracking pulse at different times in a certain horizontal position in the target area may be compared with the reference echo data, and the displacement data of the tissue at different depth positions may be obtained. This displacement reflects the relative longitudinal displacement of the tissue endoplasmic point relative to the above propagation moment caused by shear wave propagation.

In step S1033, the reference echo data and the echo data of the push pulse at different times may be cross-correlated by block-matching to obtain the displacement value of the position change. It can be understood that the matching criteria of block matching algorithm and block matching displacement can also be set by themselves. Moreover, since the displacement caused by the shear wave propagation is very small, the segment data of the same position on the echo data can be phase-shifted, and the displacement value is directly calculated by the phase shift, and the position value is the displacement data. .

The above displacement calculation process can be performed for one or more locations within the target area. For the resulting displacement data, a certain filtering process can be performed in the spatial or temporal dimension to reduce noise.

When the data calculation is performed based on the echo data in step S103, the particle velocity calculation may be included. The particle velocity meter includes the following steps:

Step S1034: After acquiring the displacement data of the tissue of the target area, taking the displacement data of the same position at different times and obtaining the gradient along the time direction, the particle velocity curve at different times at the position can be obtained. The particle velocity curve reflects the instantaneous velocity of the particle at various points in the shear wave propagation process at different times. The above particle velocity calculation process can be performed for one or more locations within the target area. For the obtained particle velocity data, a certain filtering process can be performed in the spatial or temporal dimension to reduce noise.

When the data calculation is performed based on the echo data in step S103, the propagation distance calculation may be included. The propagation distance calculation includes the following steps:

Step S1035: Take displacement data of each time corresponding to any position in the target area, form a displacement-time curve, and find a time corresponding to the peak on the curve. The time corresponding to the peak reflects the moment when the shear wave passes through the position. It can be understood that the time when the shear wave passes through the position is also the time corresponding to the peak of the particle velocity-time curve, and the particle velocity-time curve of the position can also be used to find the time when the corresponding shear wave passes the position. In this step, the displacement or velocity data within a certain period of time Δ 附近 near a specific time can be directly taken out, and the above propagation distance calculation is performed. The only difference is that the calculated distance is difficult to accurately determine which position is within the target area, but it can be judged after how long the displacement shear wave is transmitted.

Step S1036: Obtain a displacement-transverse position curve or a particle velocity-transverse position curve in a period of time Δ Τ before and after the peak corresponding to the peak in the target region, and a displacement-transverse position at each moment in the period Δ Τ The curve or the particle velocity-transverse position curve performs a cross-correlation judgment to obtain a difference in the lateral position of the shear wave in the time period, the difference reflecting the propagation distance of the shear wave within the above-mentioned period Δ Τ. The above calculation processing is performed on all the positions in the target area, and the propagation distance of the shear wave within a period of time Δ 时 when the shear wave passes near each position in the target area can be obtained. In this step, the length Δ Τ of the time period may be determined by itself, and the time period may be before or after the above time, before the above time or after the above time.

It can be understood that, in step S1035, the displacement or velocity data within a period of time ΔT near a certain specific time can be directly taken out, and the above-described propagation distance calculation is performed. By averaging the above propagation distances, the average propagation distance within a period of time Δ Τ in the target region or the average propagation distance within a period of time Δ 剪切 during shear wave propagation can be obtained.

The propagation distances in Δ 对应 corresponding to a plurality of consecutive moments are taken out. As shown in FIG. 6, the propagation distance-time curve can be obtained, or the total propagation distance within 7^ for a long period of time can be accumulated. It is also possible to take out the displacement data of each time corresponding to two different positions, and perform cross-correlation comparison to find out The time difference between the two can obtain the propagation time of the shear wave between these two positions. When the data is calculated according to the echo data in step S103, the elastic ratio calculation may be included. The elastic ratio mainly refers to a ratio of Young's modulus of each target region when the system has multiple target regions, to reflect each The degree of hardness difference between the target areas.

Under certain conditions, the propagation velocity of the shear wave has a nearly fixed relationship with the tissue hardness:

E = 3pc ^{2 In the} above formula, P represents the tissue density, £ represents the Young's modulus value of the tissue, and c represents the propagation velocity of the shear wave. Under certain conditions, the larger the Young's modulus, the greater the tissue hardness. Assuming that the Young's modulus between the two tissues is different, and they are respectively, the ratio is satisfied:

EE ₂ = 3p _l c _l ² /(3p ₂ c ₂ ² ) Assuming tissue densities are similar, ie Α Α, 贝' J :

E^ l E ₂ c _l I c ₂ can be used for a period of time 7. Calculate the squared ratio of the shear wave propagation distance within ^, ie:

d _x ² ld ₂ ²

Where ί ₇ , ί ₇ represent the shear wave propagation distances of different target regions over a period of time T _long . Of course, it is also possible to directly calculate the propagation velocity in each target region, and then calculate the ratio of the squares of the velocity to obtain the elastic ratio.

When the data calculation is performed based on the echo data in step S103, the propagation speed calculation may be included. For any depth in each target area, the particle velocity-time curve or displacement-time curve of each lateral position is taken out, and the time shift between the curves is found by cross-correlation comparison, which represents the shear wave passing through the above-mentioned mutual participation. The time difference between the two lateral positions of the correlation comparison. The ratio of the lateral position difference to the time shift represents the propagation speed at the corresponding position. For example, the approximate calculation formula can be directly derived by using the wave propagation equation as follows:

2 d ² u I dt ²

C ~

d u dx + d u dz where c is the propagation velocity and can be regarded as longitudinal displacement data or longitudinal velocity data, X represents the lateral coordinate, and z represents the έ slave coordinate.

In step S104, the measurement calculation result is displayed. After the above elastic measurement calculation, there are many ways The result is displayed.

For example, if the wavefront film map is used, the displacement data or the particle velocity data at a certain time is taken out to form a distribution map of the current time at each position of the target region, and the distribution map can reflect the propagation position of the shear wave at the current time. When the displacement data or the particle velocity data distribution map of multiple moments is continuously played, the shear wave wavefront propagating film map is formed, and the propagation process of the shear wave is visually represented.

For example, the propagation distance distribution map is used to image the propagation distance of Δ Τ at various positions in the target area.

For example, if the propagation time distribution map is used, the propagation time between a fixed distance near each position in the target area is imaged and displayed. Of course, the propagation time can also be displayed in a curved form.

For example, if the propagation distance curve is used, the propagation distance-time curve in the target area from a certain moment to a later period is drawn, and multiple curves can be displayed in multiple target areas.

For example, the schematic diagram of the average propagation distance at each position in the target area is directly displayed, or the average propagation distance of the shear wave at a certain time in a certain period of time is directly displayed.

For example, when there are multiple target regions, a schematic diagram of the elastic ratio in multiple target regions, or a schematic diagram of the square of the propagation velocity, or a square of the propagation distance is displayed.

In the above display process, grayscale or color coding may be used, or the display effect may be enhanced by superimposing and blending with other modes of images.

As shown in FIG. 7, a second preferred embodiment of the present invention provides an elastic measurement and detection method. The elastic measurement and detection method of the present embodiment is substantially the same as the first preferred embodiment, and includes the following steps:

Step S201, transmitting a reference pulse (reference wave) to the target area, and receiving echo information of the reference pulse in the target area, acquiring echo data of the reference pulse, and taking echo data of the reference pulse as a reference echo. data. In the present embodiment, the reference pulse is transmitted and the echo information in the target region is received before each group of push pulses is transmitted, and the echo data of the reference pulse is acquired and set as the reference echo data. The echo information of the reference pulse records the tissue information of the target area before the shear wave is generated and starts to propagate.

Step S202, generating a shear wave in the target area.

Step S203, transmitting a tracking pulse to the target area and receiving its echo information, and acquiring echo data. In the present step of the embodiment, the echo data refers to echo data of a tracking pulse of a tracking pulse.

Step S204, performing data calculation according to the echo data, and obtaining a measurement calculation result. In this In the embodiment, the echo data of the reference pulse is taken as the reference echo data, and the data is calculated by the echo data of the tracking pulse and the echo data of the reference pulse as the reference echo data, and the displacement, the particle velocity, and the time are obtained. The calculation results of the propagation distance of the shear wave at each moment and the propagation time of the shear wave within a certain distance.

The echo data of the tracking pulses at different times in a certain horizontal position in the target region are compared with the reference echo data at the lateral position, and the displacement data of the tissue at different depth positions can be obtained. This displacement mainly reflects the longitudinal displacement of the intragranular mass in the tissue caused by shear wave propagation relative to the intragranular mass before the shear wave propagates. The calculation process such as the particle velocity, the propagation distance of the shear wave at each time in a period of time, and the propagation time of the shear wave within a certain distance are substantially the same in the first preferred embodiment, and will not be described herein.

Step S205, displaying the measurement calculation result.

In this embodiment, before the shearing wave is generated in the target region, the reference pulse is first transmitted to the target region, and the echo data of the reference pulse is acquired as the reference echo data, thereby acquiring the intragranular particle relative to the shear caused by the shear wave propagation. The calculation results such as the longitudinal displacement of the mass point in the tissue before the wave propagation, the corresponding particle velocity, the propagation distance of the shear wave at each moment in a period of time, and the propagation time of the shear wave in a distance. The other steps in this embodiment are substantially the same as those in the first preferred embodiment, and are not described herein again.

As shown in FIG. 8 , the present invention further provides an ultrasonic elastic measuring system, which includes an ultrasonic probe 11 , a control module 12 , a signal processing module 13 , a calculation module 15 , and a display device 17 . The ultrasonic probe 11 is provided with a transceiver module 110 . The transceiver module 110, the signal processing module 13, the calculation module 15, and the display device 17 of the ultrasound probe 11 are sequentially connected, and the control module 12 is connected to the transceiver module 110. among them:

The transceiver module 110 is configured to transmit a push pulse, a tracking pulse, and a reference pulse, and receive echo data of the tracking pulse and the reference pulse.

The control module 12 is configured to control the transceiver module 110 to transmit a push pulse, a tracking pulse, and a reference pulse. In actual use, the control module 12 transmits a specific ultrasound sequence consisting of a push pulse, a reference pulse, and a tracking pulse according to a preset time interval, thereby facilitating generation of a shear wave in the target region and providing the transceiver module of the ultrasound probe 11 . 110 receives the corresponding echo data.

The signal processing module 13 is configured to perform signal preprocessing on the echo data, thereby facilitating computational mode Block 15 performs subsequent calculations, which may include beamforming processing, and may also include, for example, signal amplification, analog to digital conversion, orthogonal decomposition, and the like.

The calculation module 15 is configured to perform processing calculation on the signal of the beam synthesis output. The calculation module 15 can be used to calculate various types of propagation parameters of the shear wave. Specifically, the calculation module 15 includes:

a particle velocity calculation unit 151, configured to calculate a particle velocity of the target tissue;

a propagation distance calculation unit 152, configured to calculate a propagation distance of the shear wave;

The Young's modulus ratio calculation unit 153 is configured to calculate the Young's modulus ratio Young's modulus ratio of the target tissue.

The calculation module 15 calculates the shear wave propagation distance at each moment from a certain position, or the average distance within a certain period of time, or the average distance ratio of a certain period of time, or the average propagation speed in several target regions. The ratio, etc., reflects the physical characteristics of the target area and generates a corresponding elastic image.

The display device 17 is for displaying the elasticity image generated by the calculation module 15.

The elastic measurement detecting method and system of the present invention generates a shear wave propagation by transmitting a series of specific pulses in a target region inside a tissue to be detected, and then continuously transmits and receives an echo signal within a range of the shear wave propagation path, from The echo distance of the shear wave is extracted from the echo signal for a period of time, and the average distance is calculated and finally displayed. If the shear wave propagates at the same time under the same emission conditions, the higher the hardness of the tissue, otherwise the softer the tissue.

The method of the invention can calculate and acquire related parameters reflecting the elasticity of the tissue without the operator controlling the strength of pressing the probe, so that the repeatability and stability of the measurement are ensured. On the other hand, the present invention can obtain quantitative parameter values, and is particularly suitable for elastic measurement of uniform hook structures. At the same time, the present invention can also provide elastic difference parameters between different tissues to reflect the degree of elasticity difference between different tissues.

The above is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

Rights request

1. An elastic measurement and detection method, characterized in that: the following steps are included,

Producing shear waves in the target area;

The measurement calculation result is displayed.

2. The elastic measurement detecting method according to claim 1, wherein:

The elastic measurement detecting method further includes the following steps of generating a shear wavefront in the target region, transmitting a reference pulse to the target region, receiving echo information of the reference pulse in the target region, and acquiring an echo of the reference pulse data.

3. The elastic measurement detecting method according to claim 2, wherein: when the data is calculated according to the echo data to obtain the measurement calculation result, the displacement data is acquired by the data calculation, and the following steps are included when the displacement data is acquired. ,

4. The elastic measurement detecting method according to claim 3, wherein: when the echo data at any one of the positions in the target region is taken as the reference echo data, the reference echo data is used as the reference echo data. The echo data of the tracking pulse at one time or the echo data of the reference pulse at any time.

The elastic measurement detecting method according to claim 3 or 4, wherein when the data calculation is performed according to the echo data to obtain the measurement calculation result, the particle velocity at different times is obtained by the data calculation, and the particle is acquired. Speed includes the following steps,

6. The elastic measurement detecting method according to claim 3, wherein: When the wave data is used for data calculation to obtain the measurement calculation result, the propagation distance of the shear wave in a period of time is obtained by data calculation, and the following steps are included when the propagation distance is obtained for calculation.

7. The elastic measurement detecting method according to claim 6, wherein: when performing data calculation based on the echo data to obtain a measurement calculation result, obtaining a Young's modulus ratio between different target regions, when acquiring When the Young's modulus ratio is satisfied, the following formula is satisfied.

d _x ² ld ₂ ²

Where di, ί ₇ represent the propagation distance of the shear wave for a different target region within a period of time 7 ^, and c represents the propagation velocity of the shear wave.

8. The elastic measurement detecting method according to claim 1, wherein: when displaying the measurement calculation result, using a wavefront film map, a propagation distance distribution map, a propagation time distribution map, a propagation distance graph, and a propagation The distance map, the elastic ratio diagram, the square of the propagation velocity, and the square of the propagation distance are at least one of the schematic diagrams.

9. The elastic measurement detecting method according to claim 8, wherein: when the measurement calculation result is displayed, a gray scale or color coding mode is used.

10 . An elastic measurement and detection system, comprising: an ultrasound probe, a control module, a signal processing module, a calculation module and a display device, wherein the ultrasound probe is provided with a transceiver module, the transceiver module of the ultrasound probe, and a signal processing module The computing module and the display device are sequentially connected, and the control module is connected to the transceiver module.

The signal processing module is configured to perform signal preprocessing on the echo data; The calculation module is configured to process and calculate a signal output by the beam synthesis;

11. The elastic measurement and detection system of claim 10, wherein: the calculation module comprises:

Young's modulus ratio calculation unit for calculating Young's modulus ratio Young's modulus ratio of target tissue