1. German Center for Vertigo and Balance Disorders (DSGZ), LMU University Hospital, LMU Munich, 81377 Munich, Germany
2. Pharmaceutical Radiochemistry, TUM School of Natural Sciences, TU Munich, 85748 Garching, Germany
3. Department of Nuclear Medicine, LMU University Hospital, LMU Munich, 81377 Munich, Germany
4. Department of Neurology, LMU University Hospital, LMU Munich, 81377 Munich, Germany