Study of a simple model for the transition between the ballistic and the diffusive regimes in diffusive media

Abstract

A Monte Carlo simulation was utilized to investigate a simple model forthe transition between the ballistic and the diffusive regimes indiffusive media. The simulation focuses on the propagation of visibleand near-infrared light in biological tissues. This research has mainlytwo findings: (1) the transition can be described, as was foundexperimentally, with good accuracy by only two terms (ballistic anddiffusive). (2) The model can be utilized for cases where the absorptioncoefficient is not negligible compared to the scattering coefficient byadding a power-law prefactor to the diffusive term. (C) 2016 Society ofPhoto-Optical Instrumentation Engineers (SPIE)