1. Institute of Clinical Radiology, Ludwig-Maximilians-University Munich, Munich, Germany
2. Institute of Neuroradiology and Interventional Neuroradiology, University Hospital Klinikum rechts der Isar Munich, Munich, Germany
3. Institute of Neuroradiology, University Hospital Carl Gustav Carus, Dresden, Germany
4. Diagnostical and Interventional Radiology, Eberhard Karls University Tuebingen, Tuebingen, Germany
5. Interdisciplinary Stroke Center Munich, Ludwig-Maximilians-University Munich, Munich, Germany
6. Radiology Center Rosenheim, Rosenheim, Germany