1. Department of Radiology University Hospital Bonn Venusberg Campus 1 Bonn Germany
2. Institute for Neuroradiology University Hospital Frankfurt/Main Schleusenweg 2‐16, Haus 95 Frankfurt Germany
3. Philips Research Röntgenstrasse 24-26 Hamburg Germany
4. Philips Healthcare, Philips GmbH, Röntgenstrasse 22, 22335 Hamburg Germany
5. IMBIE University Hospital Bonn Venusberg Campus 1 Bonn Germany
6. Department of Neurodegenerative Diseases and Geriatric Psychiatry University Hospital Bonn Venusberg Campus 1 Bonn Germany