@patent{4152, title = {MR/PET Attenuation Correction}, author = {Hofmann, M. and Sch{\"o}lkopf, B. and Steinke, F. and Pichler, BJ.}, organization = {Max-Planck-Gesellschaft}, school = {Biologische Kybernetik}, month = jul, year = {2006}, doi = {}, month_numeric = {7} }