Abstract
In this paper, two numerical hybrid methods to model photon transport phenomena in biological tissues are compared. The coupled radiative transfer–diffusion model is based on the finite element solution of the radiative transfer equation and its approximation. The hybrid Monte-Carlo–diffusion consists in modeling the propagation of laser light in turbid media with the pure statistical Monte-Carlo method in the vicinity of the source and the boundaries and the diffusion approximation elsewhere in the domain. We apply these codes to calculate the spatially resolved reflectance amplitude and phase resulting from an intensity modulated laser beam. The results show that the hybrid methods can be used to simulate light propagation with good accuracy and speed.
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