ANALYSIS OF FORWARD SCATTERING OF DIFFUSE PHOTON-DENSITY WAVES IN TURBID MEDIA - A DIFFRACTION TOMOGRAPHY APPROACH TO AN ANALYTIC SOLUTION

We present a model of the forward problem for diffuse photon-density w aves in a turbid medium containing a spherical inhomogeneity, using di ffraction tomographic (DT) methods. Recently, by use of DT methods, th e forward problem was investigated [Opt. Express 1, 6 (1997); www.osa. org] assuming weak perturbations from the background medium but an arb itrary inhomogeneity structure. We apply DT concepts to a forward prob lem solution that permits strong perturbations but requires a spherica l inhomogeneity. We show that this model is consistent with previous D T results and discuss the application of this new model.