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A method and equipment for measuring tissue mechanical property parameters

A technology of mechanical properties and parameters, applied in the direction of organ motion/change detection, ultrasonic/sonic/infrasonic image/data processing, ultrasonic/sonic/infrasonic Permian technology, etc. and other problems to achieve the effect of accurate detection

Active Publication Date: 2020-04-14
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this type of hard and soft tissue, the frame rate of the existing single-angle plane wave ultrafast imaging is not enough to obtain the information needed to accurately calculate the wave velocity

Method used

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  • A method and equipment for measuring tissue mechanical property parameters
  • A method and equipment for measuring tissue mechanical property parameters
  • A method and equipment for measuring tissue mechanical property parameters

Examples

Experimental program
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Embodiment 1

[0043] In this example, please refer to figure 2 . These include:

[0044] Step 10, the data collection step, includes:

[0045] Firstly, control the ultrasound probe to emit ultrasound to the region of interest of the target tissue, and receive the echo of the ultrasound to obtain the first echo data, the first echo data includes multiple frames of echo data;

[0046] Secondly, after obtaining the first echo data, the ultrasonic probe is controlled to emit a focused acoustic beam to the region of interest in the target tissue, generating acoustic radiation force to excite the tissue to vibrate, resulting in the propagation of strain waves; During the rest period, keep still, that is: do not transmit and / or receive ultrasonic signals to the target tissue;

[0047] Then, after the rest time is over, control the ultrasound probe to emit ultrasound to the region of interest of the target tissue again to detect the strain wave passing through the target tissue, and receive the...

Embodiment 2

[0051] Please refer to figure 1 and figure 2 As shown, in this embodiment, a device 100 for measuring tissue mechanical characteristic parameters, wherein the ultrasonic probe 101 is a linear array probe with 128 array elements, the maximum excitation voltage is 70V, and the excitation center frequency is 6.25MHz. The frame rate is 20K fps. The acoustic radiation force uses 35 vibration elements to focus, the maximum excitation voltage is 58V, and the excitation center frequency is 4MHz. The specific process of using the detection device 100 to measure tissue mechanical characteristic parameters is as follows:

[0052] The transmission control module 102 controls the ultrasound probe 101 to transmit ultrasound to the region of interest of the target tissue 108 through the transmission and reception module 103 in plane wave imaging mode, and the echo processing module 104 receives 10 ultrasonic waves from the static target tissue at a frame rate of 20KHz through the transmis...

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Abstract

A method and a device (100) for measuring mechanical property parameters of tissue. A data acquisition step (10) is continuously performed multiple of times, said step comprising: controlling an ultrasonic probe (101) to transmit an ultrasonic wave to target tissue (108), and receiving an echo of the ultrasonic wave to obtain first echo data; controlling the ultrasound probe (101) to transmit a focusing acoustic beam to a region of interest of the target tissue (108), so as to generate a propagation of a strain wave; within a resting time after the focusing acoustic beam is transmitted, the ultrasound probe (101) not transmitting an ultrasound signal to and / or receiving an ultrasound signal from the target tissue (108); after the resting time ends, controlling the ultrasonic probe (101) to transmit an ultrasonic wave to the region of interest of the target tissue (108) again, and to receive the echo of the ultrasonic wave, so as to obtain second echo data. The mechanical property parameters of the target tissue (108) are calculated on the basis of multiple sets of first echo data and second echo data. By means of said method and device (100), the temporal resolution for measurement can be several times that of the single excitation detection method in the original technology, achieving accurate detection of wave velocity of a strain wave of biological soft tissue having high toughness.

Description

technical field [0001] The invention relates to a tissue detection method and system, in particular to a method and equipment for measuring tissue mechanical characteristic parameters. Background technique [0002] Medical ultrasound imaging has become one of the mainstream medical imaging methods due to its advantages of real-time, no radiation, and low price. Among them, ultrasound elastography, which mainly measures the mechanical properties of various materials such as elasticity, has become a new trend in ultrasound technology. Huge branch. Strain wave (also known as elastic wave) is a wave mode that can only propagate in solid media, and the vibration direction and propagation direction of the particles are perpendicular to each other during the propagation process. Because of the different propagation media, different types of strain waves will be generated when the tissue is excited. When propagating in purely elastic infinite tissue such as breast and liver, the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/08
CPCA61B8/08
Inventor 张新宇邵梦朱莹陈昕刁现芬
Owner SHENZHEN UNIV