Numerical simulation of photon density waves in a biophantom with foreign objects

Based on the expression obtained for the scattering intensity in terms of the Bethe–Salpeter equation, the simulation of diffuse photon density wave (DPDW) is implemented in the context of the Monte Carlo method in random media imitating biological tissues in the presence of foreign objects. The DPD...

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Bibliographic Details
Published in:Optics and spectroscopy 2015-09, Vol.119 (3), p.513-519
Main Authors: Kuzmin, V. L., Val’kov, A. Yu, Oskirko, A.
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physical Optics
Physics
Physics and Astronomy
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Summary:Based on the expression obtained for the scattering intensity in terms of the Bethe–Salpeter equation, the simulation of diffuse photon density wave (DPDW) is implemented in the context of the Monte Carlo method in random media imitating biological tissues in the presence of foreign objects. The DPDW amplitude and phase are calculated as a function of the source–detector distance with explicit allowance for internal reflection effects; the allowance for the Fresnel reflection is necessary for quantitative agreement with measurements. DPDW parameters are calculated for the first time for a biomodel with foreign objects, and optical parameters of the biomodel, as well as spatial parameters of the problem, are estimated for values at which one can visualize an foreign object embedded into the medium.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X15090167