混浊介质前向光散射的坐标追踪模型(英文)  

Coordinate-Tracing Model of Light Forward Scattered by Turbid Media

作　　者：吴柳 李哲 汪家升 徐向群 

机构地区：[1]Department of Physics,Beijing Jiaotong University [2]School of Science,Zhejiang Sci-Tech University

出　　处：《中国激光》2009年第10期2510-2516,共7页Chinese Journal of Lasers

基　　金：Supported by a research grant fromthe National Natural Science Foundation of China(30870675)

摘　　要：Optical techniques based on measuring scattering properties of bio-tissues have a potential to determine internal physiological state.For tissue imaging,the least-scattered photons arriving at a detector may have a significant effect on the development of imaging algorithms.Tracing least-scattered photons may be helpful for further understanding of imaging mechanisms within current high-resolution optical-imaging techniques.Based on the vertex-propagator,a coordinate-tracing model is developed to search probabilities for least-scattered photons traversing in a scattering medium.Integral expressions for photon experiencing any time scattering events are obtained.Compared with the methods based on both geometrical tracing and Monte Carlo simulation,our model is simpler and easier for programming.Optical techniques based on measuring scattering properties of bio-tissues have a potential to determine internal physiological state. For tissue imaging,the least-scattered photons arriving at a detector may have a significant effect on the development of imaging algorithms. Tracing least-scattered photons may be helpful for further understanding of imaging mechanisms within current high-resolution optical-imaging techniques. Based on the vertex-propagator,a coordinate-tracing model is developed to search probabilities for least-scattered photons traversing in a scattering medium. Integral expressions for photon experiencing any time scattering events are obtained. Compared with the methods based on both geometrical tracing and Monte Carlo simulation,our model is simpler and easier for programming.

关 键 词：近似计算 光波传播 散射 测量 

分 类 号：O242.2[理学—计算数学] TN012[理学—数学]