Abstract
We present a perturbation Monte Carlo method which can be used for light propagation in heterogeneous diffusive media. The method is based on the unique correspondence between the seed of a random number generator and the ensuing sequence of random numbers. The method can be used for arbitrary initial distributions of the optical properties and can predict the output flux at the boundary of the medium for arbitrary perturbations of the absorption coefficient. The method works well also for “small” scattering perturbations. The importance of this method as a forward problem solver and possible applications in the inverse problem are discussed.
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