Maximum-likelihood absorption tomography
  Maximum-likelihood methods are applied to the problem of absorption tomography. The reconstruction is done with the help of an iterative algorithm. We show how the statistics of the illuminating beam can be incorporated into the reconstruction. The proposed reconstruction method can be considered as a useful alternative in the extreme cases where the standard ill-posed direct-inversion methods fail. 
J. Rehacek, Z. Hradil, M. Zawisky, W. Treimer, and M. Strobl