The Monte Carlo method is rapidly becoming the model of choice for simulating light transport in tissue. This paper provides all the details necessary for implementation of a Monte Carlo program. Variance reduction schemes that improve the effiency of the Monte Carlo method are discussed. Analytic expressions facilitating convolution calculations for flat and Gaussian beams are included. Useful validation benchmarks are presented.
S. A. Prahl, S. A. Prahl,
"A Monte Carlo model of light propagation in tissue", Proc. SPIE 10305, Dosimetry of Laser Radiation in Medicine and Biology, 1030509 (10 January 1989); doi: 10.1117/12.2283590; https://doi.org/10.1117/12.2283590