22 June 2005 Inverse Monte Carlo method for determination of optical parameters of biological tissues
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Abstract
In this work version of inverse Monte Carlo method for determination of optical parameters of biological tissues is presented. This method determine such optical parameters as anisotropy factor (g), absorption coefficient (μa), scattering coefficient (μs) both these coefficients determine mean free path (ds) which use for Monte Carlo simulation method of radiative transfer. These parameters are determined by the step-by-step searching. We have released three methods ofthe optical parameters searching: simple, differential and approximation. Optical parameters are changed by a certain value-step. In the simple searching method step is fixed, in the differential searching method step decreases as we approach to "mistake zone". The differential searching method finds more accurate results for a less time. In the approximation searching method a transfer radiation function (of optical parameter) is approximated by a power polynomial and the optical parameters value is determined from equation. The approximation searching method uses the close value of transfer radiation rate, without the "mistake zone". Using square approximation searching method the optical parameters adipose tissue has determined. The anisotropy factor g is equal 0.876 the scattering and absorption coefficients are equal 19.81 cm-1 and 0.15 cm-1 respectively.
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Maxim S. Zarembo, Maxim S. Zarembo, Nikolai N. Golovin, Nikolai N. Golovin, Yuri P. Meshalkin, Yuri P. Meshalkin, } "Inverse Monte Carlo method for determination of optical parameters of biological tissues", Proc. SPIE 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI, (22 June 2005); doi: 10.1117/12.634659; https://doi.org/10.1117/12.634659
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