1. Padova Neuroscience Center, University of Padova,Department of Information Engineering,Padova,Italy
2. Padova Neuroscience Center, University of Padova,Department of Neuroscience,Padova,Italy
3. Veneto Institute of Oncology – IRCCS,Department of Information Engineering, and the Medical Physics Department,Padova,Italy
4. University of Padova,Department of Information Engineering,Padova,Italy
5. Siemens Medical Solutions Inc., Knoxville,Molecular Imaging,Knoxville,USA
6. Padova University Hospital,Nuclear Medicine Unit,Department of Medicine,Padova,Italy