Influence of the scattering phase function on light transport measurements in turbid media performed with small source{endash}detector separations
- Bioscience and Biotechnology Group CST-4, MS E535, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Many methods of optical tissue diagnosis require that measurements be performed with small source{endash}detector separations in a backscatter geometry. Monte Carlo simulations are used to demonstrate that for these situations light transport depends on the exact form of the angular scattering probability distribution, {ital P}({theta}). Simulations performed with different forms of {ital P}({theta}) with the same value of {l_angle}cos{theta}{r_angle} result in the collection of significantly different fractions of the incident photons, particularly when small-numerical-aperture delivery and collection fibers are employed. More photons are collected for the distribution that has a higher probability of scattering events with {theta}{approx_gt}125{degree}. For the clinically relevant optical parameters employed here, the differences in light collection are {approx_gt}60{percent}. {copyright} {ital 1996 Optical Society of America.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 367241
- Journal Information:
- Optics Letters, Vol. 21, Issue 7; Other Information: PBD: Apr 1996
- Country of Publication:
- United States
- Language:
- English
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