1. Department of Nuclear Medicine, Philipps University of Marburg, 35043 Marburg, Germany
2. Department of Urology, Philipps University of Marburg, 35043 Marburg, Germany
3. Reimbursement Institute, 30354 Hürth, Germany
4. Department for Diagnostic and Interventional Radiology and Nuclear Medicine, St. Josef Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
5. Department of Radiology and Interventional Radiology, University Hospital Freiburg, 79110 Breisgau, Germany