Experimental evaluation of an anisotropic scattering model of a slab geometry.
A model has been developed based on random walk theory that allows the diffusion of light along a principal axis to differ from that in orthogonal directions. We present expressions that describe the time-resolved intensity measured across a slab and on the surface of a semi-infinite medium for a principal axis oriented parallel or perpendicular to the surface. The model of time-resolved transmittance is compared with experimental data acquired by use of a phantom consisting of wax fibers arranged within a solid cube of resin. It is shown that a single set of optical parameters is sufficient to model the experimental measurements acquired across all three orientations of the cube.
Hebden
Jeremy C
JC
Department of Medical Physics & Bioengineering, University College London, London WC1E 6JA, UK. jem@medphys.ucl.ac.uk
Guerrero
Jorge J García
JJ
Chernomordik
Victor
V
Gandjbakhche
Amir H
AH
D000465:Algorithms; D016880:Anisotropy; D003198:Computer Simulation; D003238:Connective Tissue / Q000502:physiology* / Q000648:ultrastructure; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008954:Models, Biological; D041622:Tomography, Optical / Q000379:methods*