… diffusion approximation of the radiative transfer equation is a model used widely to describe
photon migration in highly diffusing … An analysis of the time-dependent diffusion equation …

… photon migration through a diffusing slab. The model, developed for a homogeneous slab, is
based on the diffusion approximation … limits of the approximated theory in different physical …

… As in the uniform case it is convenient to analyze photon migration in terms of a random
walk constrained to move on a lattice. Consider a photon reaching the surface, z = 0, at the nth …

… simplest model for photon migration. The applicability of the diffusion approximation,
however, … theoretical range of validity of the diffusion approximation, review a frequency-dependent …

… Nevertheless, the diffusion approximation is widely employed, since analytic results are …
photon migration that retains much of the computational simplicity of the diffusion approximation …

… for the diffusion approximation can be better clarified. The study of photon migration for an
infinite … To evaluate the validity of the diffusion approximation (DA) we compared the analytical …

… In this paper, a coupled radiative transfer equation and diffusion approximation model is …
assumptions of the diffusion approximation are not valid. The diffusion approximation is used …

… photon migration at early times and reduces at long times to the center-moved diffusion
approximation… We will compare the photon densities computed by the diffusion approximation DA…

… (photons) migrating within a semi-infinite medium containing a surface layer whose absorbance
differs from that of the underlying layer. Photons … layer distorts photon emission profiles …

… We analyse the limits of the diffusion approximation to the time-independent equation of
radiative transfer for homogeneous and heterogeneous biological media. Analytical calculations …