Two-dimensional matching method and equipment for elastography displacement
A technology of elastic imaging and matching method, which is applied in medical science, diagnosis, application, etc., can solve the problems of poor real-time performance and achieve the effect of fast matching
Active Publication Date: 2021-08-06
WUHAN ZHONGQI BIOLOGICAL MEDICAL ELECTRONICS
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Therefore, on the premise of ensuring the robustness and accuracy of elastography, improve the running speed of the algorithm, so that elastography can be better applied to clinical real-time detection, and solve the problem of poor real-time performance when the ROI area is too large at the algorithm level The method has become a technical problem to be solved urgently in the industry
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[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. In addition, the technical features in each embodiment or a single embodiment provided by the present invention can be combined arbitrarily with each other to form a feasible technical solution, but it must be based on the realization of those skilled in the art. When there is a contradiction or cannot be realized, it should be considered that ...
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Embodiments of the present invention provide a two-dimensional matching method and equipment for elastic imaging displacement. The method comprises: obtaining the maximum axial displacement of the matching block in two consecutive frames of radio frequency data (RF data or in-phase quadrature IQ data after quadrature demodulation, using IQ data for illustration below), determining the displacement direction indicator bit value, Determine the use of the first search frame or the second search frame according to the value of the indicated bit, determine the axial length and lateral width of the first search frame or the second search frame according to the maximum axial displacement, and obtain the determined range The first search frame or the second search frame; using the first step length and / or the second step length, in the first search frame or the second search frame within the determined range, perform a two-dimensional matching operation to obtain a match Lateral displacement and axial displacement of the block. The two-dimensional matching method and equipment for elastography displacement provided by the embodiments of the present invention take into account both the matching accuracy and stability of elastography displacement, and improve the speed of matching estimation.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of ultrasound imaging, and in particular to a two-dimensional matching method and device for elastic imaging displacement. Background technique [0002] Ultrasonic elastography is a new ultrasonic imaging technology that has developed rapidly in recent years. Ultrasound elastography provides richer functional information for related industries, so this method has attracted extensive attention from the industry and related research institutions. There has always been a problem of mutual restriction between the speed and accuracy of the ultrasound elastography algorithm. The current elastography algorithm is one-dimensional (i.e. only considering the axial movement of the tissue under compression) and two-dimensional (i.e. considering the axial movement and lateral movement of the tissue under compression at the same time), among which the one-dimensional algorithm is more effective in i...
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IPC IPC(8): A61B8/00
Inventor 张鹏鹏
Owner WUHAN ZHONGQI BIOLOGICAL MEDICAL ELECTRONICS