Reconstruction of diffuse photon-density wave interference in turbid media from time- resolved transmittance measurements

We demonstrate an improved technique to precisely localize inhomogeneities in turbid media by means of reconstructing diffuse photon‐density wave interference from time‐resolved transmittance measurements applying the Fourier transform. This interference can also be obtained in the reverse mode, that is using a single source and combining the signals detected at several locations. This increases the collection efficiency and the possibility for postprocessing and allows one to evaluate the data from one measurement in different ways to make the analysis more robust.