@thesis{5598,
  title = {A Machine Learning Approach for Estimating the Attenuation Map for a Combined PET/MR Scanner},
  degree_type = {Diplom},
  institution = {Max-Planck Institute for Biological Cybernetics, Tübingen, Germany},
  school = {Biologische Kybernetik},
  year = {2007},
  author = {Hofmann, M.}
}