Photon diffusion coefficient in an absorbing medium

被引:93
作者
Aronson, R
Corngold, N
机构
[1] CALTECH, Pasadena, CA 91125 USA
[2] NIRx Med Technol, W Orange, NJ 07052 USA
关键词
D O I
10.1364/JOSAA.16.001066
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A number of investigators have recently claimed, based on both analysis from transport theory and transport-theory-based Monte Carlo calculations, that the diffusion coefficient for photon migration should be taken to be independent of absorption. We show that these analyses are flawed and that the correct way of extracting diffusion theory from transport theory gives an absorption-dependent diffusion coefficient. Experiments by two different sets of investigators give conflicting results concerning whether the diffusion coefficient depends on absorption. The discrepancy between theory and the earlier set of experiments poses an interesting challenge. (C) 1999 Optical Society of America [S0740-3232(99)02205-X].
引用
收藏
页码:1066 / 1071
页数:6
相关论文
共 27 条
[1]   Optical imaging in medicine .2. Modelling and reconstruction [J].
Arridge, SR ;
Hebden, JC .
PHYSICS IN MEDICINE AND BIOLOGY, 1997, 42 (05) :841-853
[2]  
BARBOUR RL, 1990, P INT GEOSC REM SENS, V2, P1295
[3]   Independence of the diffusion coefficient from absorption: Experimental and numerical evidence [J].
Bassani, M ;
Martelli, F ;
Zaccanti, G ;
Contini, D .
OPTICS LETTERS, 1997, 22 (12) :853-855
[4]   ONE-SPEED NEUTRON-TRANSPORT PROBLEMS .2. SLAB TRANSMISSION AND REFLECTION AND FINITE REFLECTOR CRITICAL PROBLEMS [J].
CAROLL, G ;
ARONSON, R .
NUCLEAR SCIENCE AND ENGINEERING, 1973, 51 (02) :166-179
[5]  
Case K. M., 1967, LINEAR TRANSPORT THE
[6]  
CASE KM, 1958, INTRO THEORY NEUTRON, V1
[7]  
CASE KM, 1967, LINEAR TRANSPORT THE, P91
[8]  
CASE KM, 1967, LINEAR TRANSPORT THE, pCH7
[9]   Stochastic problems in physics and astronomy [J].
Chandrasekhar, S .
REVIEWS OF MODERN PHYSICS, 1943, 15 (01) :0001-0089
[10]  
Chandrasekhar S., 1950, RAD TRANSFER