1. Department of Neurology; Goethe University; Frankfurt Germany
2. Institute of Neuroradiology; Goethe University; Frankfurt Germany
3. Department of Neurology; Charité Hospital; Berlin Germany
4. Institute of Diagnostic and Interventional Radiology and Nuclear Medicine; Charité Hospital; Berlin Germany
5. Department of Neurology; Wagner-Jauregg Hospital; Linz Austria
6. Institute of Radiology; Wagner-Jauregg Hospital; Linz Austria
7. Department of Neurology; Mainz University Hospital; Mainz Germany
8. Institute of Neuroradiology; Mainz University Hospital; Mainz Germany
9. Department of Neurology; Division of Neuroradiology, Medical University of Graz; Graz Austria
10. Department of Radiology; Division of Neuroradiology, Medical University of Graz; Graz Austria
11. Department of Neurology; Fulda Hospital; Fulda Germany
12. Departments of Neurology and Pharmacy; Fulda Hospital; Fulda Germany
13. Department of Neurology; Vest Hospital; Recklinghausen Germany
14. Institute of Radiology and Neuroradiology; Vest Hospital; Recklinghausen Germany
15. Institute of Radiology; Division of Neuroradiology, Cologne University Hospital; Cologne Germany
16. Department of Neurology; Altenburger Land Hospital; Altenburg Germany
17. Institute of Radiology; Altenburger Land Hospital; Altenburg Germany
18. Department of Neurology; Essen University Hospital; Essen Germany
19. Institute of Diagnostic and Interventional Radiology and Neuroradiology; Essen University Hospital; Essen Germany
20. Department of Neurology; Medical Faculty, Heinrich Heine University; Düsseldorf Germany
21. Institute of Diagnostic and Interventional Radiology; Medical Faculty, Heinrich Heine University; Düsseldorf Germany
22. German Center for Neurodegenerative Diseases and Department of Neurology; Bonn University Hospital; Bonn Germany
23. Department of Neuroradiology; Freiburg University Hospital; Freiburg Germany
24. UCLA Stroke Center and Department of Neurology; University of California, Los Angeles; Los Angeles CA