1. Department of Nuclear Medicine, University Hospital Ulm, 89081 Ulm, Germany
2. Department of Neurology, University Hospital Ulm, 89081 Ulm, Germany
3. German Center for Neurodegenerative Diseases (DZNE), Ulm University, 89081 Ulm, Germany
4. Department of Diagnostic and Interventional Radiology, University Hospital Ulm, 89081 Ulm, Germany
5. Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
6. TUM-Neuroimaging Center, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany