Diffraction tomography for biochemical imaging with diffuse-photon density waves

The spatial structure of optically heterogeneous turbid media is probed with diffusive light. Projection images are obtained experimentally by deconvolution of the scattered diffuse-photon density waves on a planar boundary by use of a fast Fourier transform. The method is very fast, permitting object localization and characterization in $\sim 1000$ volume-element samples on subsecond computational time scales. The optical properties of slice-shape inhomogeneities are accurately determined.