A scanning-mode 2D shear wave imaging (s2D-SWI) system for ultrasound elastography.
作者： Weibao Qiu , Congzhi Wang , Yongchuan Li , Juan Zhou , Ge Yang
DOI: 10.1016/J.ULTRAS.2015.05.005
关键词: Analytic signal 、 Preclinical imaging 、 Biomedical engineering 、 Impulse (physics) 、 Acoustic radiation force 、 Elastography 、 Elasticity (economics) 、 Computer science 、 Ultrasound 、 Radiology 、 Digital image processing
摘要: Ultrasound elastography is widely used for the non-invasive measurement of tissue elasticity properties. Shear wave imaging (SWI) a quantitative method assessing stiffness. SWI has been demonstrated to be less operator dependent than quasi-static elastography, and ability acquire information in contrast with acoustic radiation force impulse (ARFI) imaging. However, traditional implementations cannot two dimensional (2D) images distribution. This study proposes evaluates scanning-mode 2D (s2D-SWI) system. The hardware image processing algorithms are presented detail. Programmable devices support flexible control system algorithms. An analytic signal based cross-correlation Radon transformation shear speed determination proposed, which can implemented using parallel computation. Imaging mimicking phantoms, vitro, vivo test conducted demonstrate performance proposed s2D-SWI represents new choice mapping elasticity, great potential implementation commercial ultrasound scanners.
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