Excitation method and device for shear waves
A shear wave and excitation voltage technology, applied in sonic diagnosis, infrasonic diagnosis, ultrasonic/sonic/infrasonic diagnosis, etc., can solve problems such as large heat and biological discomfort, and achieve the effect of reducing heat and avoiding discomfort.
Active Publication Date: 2018-06-22
SONOSCAPE MEDICAL CORP
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[0004] In the prior art, when shear waves are used to detect lesions in the region of interest, the ultrasonic probe will generate a lot of heat on the biological surface, causing the biological discomfort
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[0056] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0057] The inventors in the embodiments of the present application found in the research that in the prior art, the emission focus is generally distributed on one side of the tissue area of interest, and distributed at the upper and lower ends of the center position. For each focus position, the ultrasonic probe The energy of the acoustic field distribution generated by the emitted push pulse is the strongest at the focal position, however, a shear wave whose wavefront depth range ...
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The invention discloses an excitation method and device for shear waves. The excitation method includes the steps that a preset focus position and the preset F number are received, wherein the F number is larger than 2; the preset focus position is located in a first region located at the lower portion of the lower boundary of a to-be-detected interested tissue region and located on the left sideof a left boundary or is located in a second region located at the lower portion of the lower boundary of a to-be-detected interested region and located on the right side of a right boundary; according to the focus position and the F number, target array elements for generating driving pulses are determined in an ultrasonic probe; strength values of excitation voltage for generating the driving pulses are provided for all the target array elements and determined, and time intervals for providing excitation voltage for all the target array elements are determined; the excitation voltage with the corresponding strength value is provided for every target array element every time intervals, and the shear waves are excited. According to the excitation method and device for the shear waves in the embodiment, the shear waves with the wave-front depth range and acoustical power which met the requirements are generated, and heat generated on the surface of biological tissue is reduced.
Description
technical field [0001] The present application relates to the field of ultrasonic imaging, in particular to a shear wave excitation method and device. Background technique [0002] Studies have shown that many tissue lesions are usually accompanied by changes in tissue stiffness, such as breast tumors, liver fibrosis in chronic hepatitis, and atherosclerotic plaques, etc. Therefore, tissue stiffness can be determined to understand tissue lesions . Furthermore, there is a quantitative relationship between the tissue stiffness and the velocity of the shear wave propagating in the tissue, and furthermore, the lesion condition of the tissue of interest can be measured by detecting the velocity of the shear wave propagating in the tissue of interest. [0003] When using shear waves to detect lesions in the region of interest, it is necessary to use the ultrasonic probe to emit a push pulse near the biological surface perpendicular to the tissue region of interest. The push pulse...
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IPC IPC(8): A61B8/00
CPCA61B8/52
Inventor 潘晓畅刘德清朱超超冯乃章唐果石学工
Owner SONOSCAPE MEDICAL CORP