Problem of the resolving power of bio-object tomography using first transmitted photons

In this paper on the basis of analytical and numerical consideration we have taken into account the actual photons avalanche front. It is shown that image resolution is decreased slower than it follows from DA and runs not as DA predicted (root)t but as (root)t - d/v, where d is the thickness of the layer and v-speed of light in the scattering medium, t-time passes through the moment of light pulse incident on the surface of the medium.