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Proceedings Paper

Lattice random walk modeling of photon migration in turbid media
Author(s): Hongwu Ren; Zujie Fang
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Paper Abstract

A lattice random walk model based on walkers wandering on discrete lattice of scattering space by discrete spatial and temporal step is presented. The discrete Green's function for infinite homogeneous turbid medium deduced by inductive method from the lattice random walk model is used with the method of images to describe the photon density distribution in two dimensional semi-infinite and finite slab homogenous turbid media such as tissue. The scattering matrix and linking matrix of the lattice random walk are obtained to describe the scattering and absorption processes in homogeneous and inhomogeneous turbid media. All the results obey the principle of causality.

Paper Details

Date Published: 7 August 1998
PDF: 10 pages
Proc. SPIE 3548, Biomedical Optics and Lasers: Diagnostics and Treatment, (7 August 1998); doi: 10.1117/12.317859
Show Author Affiliations
Hongwu Ren, Shanghai Institute of Optics and Fine Mechanics (United States)
Zujie Fang, Shanghai Institute of Optics and Fine Mechanics (China)

Published in SPIE Proceedings Vol. 3548:
Biomedical Optics and Lasers: Diagnostics and Treatment
Junheng Li; James A. Harrington, Editor(s)

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