Monte Carlo Simulation of Scattered Light with Shear Waves Generated by Acoustic Radiation Force for Acousto-Optic Imaging  

作　　者：LU Ming-Zhu WU Yu-Peng SHI Yu GUAN Yu-Bo GUO Xiao-Li WAN Ming-Xi 陆明珠;吴宇鹏;施雨;关宇波;郭小丽;万明习(The Key Laboratory of Biomedical Information Engineering of Ministry of Education,Department of Biomedical Engineering,School of Life Science and Technology,Xi'an Jiaotong University,Xi'an 710049)

机构地区：[1]The Key Laboratory of Biomedical Information Engineering of Ministry of Education,Department of Biomedical Engineering,School of Life Science and Technology,Xi'an Jiaotong University,Xi'an 710049

出　　处：《Chinese Physics Letters》2012年第12期123-126,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China(2010CB732603,2011CB707903);the National Natural Science Foundation of China(30970828).

摘　　要：A Monte Carlo method of multiple scattered coherent light with the information of shear wave propagation in scattering media is presented.The established Monte-Carlo algorithm is mainly relative to optical phase variations due to the acoustic-radiation-force shear-wave-induced displacements of light scatterers.Both the distributions and temporal behaviors of optical phase increments in probe locations are obtained.Consequently,shear wave speed is evaluated quantitatively.It is noted that the phase increments exactly track the propagations of shear waves induced by focus-ultrasound radiation force.In addition,attenuations of shear waves are demonstrated in simulation results.By using linear regression processing,the shear wave speed,which is set to 2.1 m/s in simulation,is estimated to be 2.18 m/s and 2.35 m/s at time sampling intervals of 0.2 ms and 0.5 ms,respectively.

关 键 词：SHEAR PROPAGATION PHASE 

分 类 号：TG1[金属学及工艺—金属学]