Boundary conditions for a model of photon migration in a turbid medium

D. Ben-Avraham, H. Taitelbaum, G. H. Weiss

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


In a number of theories of photon migration in a turbid medium, with specific application to laser measurements on tissue, the assumption is made that laser-injected photons within a tissue reaching the surface are invariably absorbed there. We consider the effect on the surface intensity profile, of having a partially reflecting, in place of a perfectly absorbing surface. With this change we show that, in the context of a diffusion model with a radiation boundary condition, unless the boundary is nearly completely reflecting, there will be little change in this profile when the tissue is continuously irradiated. We also show that under the same conditions little change is to be expected in the decay of the intensity at a given measuring point following a pulse of radiation at a point at some distance from it.

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalLasers in the Life Sciences
Issue number1
StatePublished - 1991
Externally publishedYes


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