Diffusion theory for light propagation in biological tissue: limitations and adaptations

Reindert Graaff; Bernhard J. Hoenders

doi:10.1117/12.634647

22 June 2005 Diffusion theory for light propagation in biological tissue: limitations and adaptations (Invited Paper)

Proceedings Volume 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI; (2005) https://doi.org/10.1117/12.634647
Event: Saratov, Russia, 2004, Saratov, Russian Federation

Abstract

Diffusion theory is an approximation ofthe equation of radiative transport, that is used to describe light propagation in turbid media. This approximation is very popular because ofits simplicity, possibilities to describe time-resolved light propagation, and for its appeal to physical intuition. However, it has also its restrictions. It is the aim ofthis contribution to discuss this method, and to evaluate what can be undertaken to avoid the deviations caused by its restrictions, based on results obtained with the equation of radiative transport.

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Reindert Graaff and Bernhard J. Hoenders "Diffusion theory for light propagation in biological tissue: limitations and adaptations (Invited Paper)", Proc. SPIE 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI, (22 June 2005); https://doi.org/10.1117/12.634647

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KEYWORDS

Diffusion

Scattering

Rayleigh scattering

Mie scattering

Signal attenuation

Photons

Absorption

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