1. Department of Neurology; Medical University of Innsbruck; Innsbruck Austria
2. Neuroimaging Research Core Facility; Medical University of Innsbruck; Innsbruck Austria
3. Department of Radiology; Medical University of Innsbruck; Innsbruck Austria
4. Department of Neuroradiology; Medical University of Innsbruck; Anichstrasse 35 A-6020 Innsbruck Austria