Unlock instant, AI-driven research and patent intelligence for your innovation.

Shear wave elastography method and system

An elastic imaging and shear wave technology, applied in the field of ultrasonic scanning, can solve the problem of uneven intensity distribution and achieve the effect of uniform intensity distribution

Active Publication Date: 2022-08-05
CHISON MEDICAL TECH CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem of uneven intensity distribution at multiple focus positions of the ultrasonic probe during shear wave elastography in the prior art, thereby providing a shear wave elastography method and system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Shear wave elastography method and system
  • Shear wave elastography method and system
  • Shear wave elastography method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Acoustic waves propagate through tissue much faster (about 1000 times) than shear waves, so the propagation of shear waves in tissue in the lateral direction can be completely tracked. By measuring the shear wave velocity in the region of interest, it is possible to provide Two-dimensional quantitative elastography of tissue. A very high motion detection frame rate is required for this, since shear wave velocities are typically on the order of a few meters per second. To obtain shear wave elastography, the ultrasound system needs to send a tracking signal to the tissue and receive backscattered echoes, which can be Dynamic excitation is delivered to generate shear waves in the body, and shear wave propagation velocity is detected by repeatedly sending tracking pulses to the body using the same imaging transducer and receiving reflected signals to monitor tissue displacement.

[0056] In practical applications, the ultrasonic waves emitted by the ultrasonic probe array o...

Embodiment 2

[0089] Embodiments of the present invention provide a shear wave elastography system, such as Figure 8 shown, including:

[0090] The focal sound pressure acquisition module 1 is used to acquire the sound pressure component p of the ultrasonic wave emitted by the ultrasonic probe at each focal position, wherein the required focal number, focal position and sound are determined according to the size of the target area of ​​the desired shear wave elastography. pressure distribution, the focus includes at least two; this module executes the method described in step S1 in Embodiment 1, and details are not repeated here.

[0091] The array element sound pressure acquisition module 2 is used to acquire the sound pressure h generated by each array element in the ultrasonic probe at each focus position; this module executes the method described in step S2 in Embodiment 1, and is not described here. Repeat.

[0092] The sound pressure weight obtaining module 3 is used to obtain the ...

Embodiment 3

[0097] An embodiment of the present invention provides a computer device, such as Figure 9 As shown, the device may include a processor 51 and a memory 52, wherein the processor 51 and the memory 52 may be connected by a bus or in other ways, Figure 9 Take connection via bus as an example.

[0098]As a non-transitory computer-readable storage medium, the memory 52 can be used to store non-transitory software programs, non-transitory computer-executable programs and modules, such as corresponding program instructions / modules in the embodiments of the present invention. The processor 51 executes various functional applications and data processing of the processor by running the non-transitory software programs, instructions and modules stored in the memory 52, ie, implements the shear wave elastography method in the above method embodiment 1.

[0099] The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a shear wave elasticity imaging method and system. The method includes: acquiring sound pressure components p of ultrasonic waves emitted by an ultrasonic probe at each focus position, wherein the desired shear wave elasticity imaging target area is determined according to the size of the target area. The number of focal points, the focal point position and the sound pressure distribution required, the focal points include at least two; the sound pressure h generated by each array element in the ultrasonic probe at each focal point position is obtained; the sound pressure weight w is obtained; The sound pressure component p at the focus position, the sound pressure h generated by each array element at each focus position, and the sound pressure weight w, obtain the intensity q of each array element; when the intensity q of each array element satisfies the preset conditions, control The ultrasonic probe performs shear wave elasticity imaging according to the intensity q of each array element. The method and system provided by the present invention can generate high-quality shear waves in the tissue to be tested by controlling the ultrasonic intensity distribution at multiple focus positions to be uniform. Shear wave elastography.

Description

technical field [0001] The invention relates to the technical field of ultrasonic scanning, in particular to a shear wave elasticity imaging method and system. Background technique [0002] Recent studies have shown that shear wave elastography can significantly shorten liver biopsies for liver fibrosis in patients with chronic hepatitis. Shear wave elastography for assessing liver elasticity is based on shear waves generated by internal mechanical push is a transmit beam generated by an ultrasound system and directed directly into the liver, and its pulse length typically requires a duration of 100 μs to produce in tissue such as figure 1 The shear wave shown, a shear wave is a mechanical wave that can be generated by propagating in a lateral direction from a focal point. [0003] Since shear waves are attenuated as they propagate laterally, a focal point can only cover an area of ​​a certain width, say about a centimeter; if the ROI (region of interest) is a few centimete...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/00
CPCA61B8/48
Inventor 王鋐陈建军
Owner CHISON MEDICAL TECH CO LTD