Does the photon-diffusion coefficient depend on absorption?

被引:73
作者
Durduran, T
Yodh, AG
Chance, B
Boas, DA
机构
[1] UNIV PENN,DEPT BIOCHEM & BIOPHYS,PHILADELPHIA,PA 19104
[2] TUFTS UNIV,DEPT ELECT ENGN & COMP SCI,MEDFORD,MA 02155
来源
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1997年 / 14卷 / 12期
关键词
light propagation in tissues; tomographic imaging; multiple scattering; photon diffusion; transport and diffusion equation; photon migration;
D O I
10.1364/JOSAA.14.003358
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We investigate the controversy over the precise form of the photon diffusion coefficient and suggest that it is largely independent of absorption, i.e., D-o = upsilon/3 mu'(s). After presentation of the general theoretical arguments underlying this assertion, Monte Carlo simulations are performed and explicitly reveal that the absorption-independent diffusion coefficient gives better agreement with theory than the traditionally accepted photon diffusion coefficient, D-mu alpha = upsilon/3(mu'(s) + mu(alpha)). The importance of resolving this controversy for the proper characterization of the material optical properties is discussed. (C) 1997 Optical Society of America.
引用
收藏
页码:3358 / 3365
页数:8
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