1. From the Department of Diagnostic and Interventional Neuroradiology (T.B.-B., D.P., N.L., B.F., C.M., K.K., J.K., M.B., M.L., C.Z., J.K.), Klinikum Rechts der Isar, Technical University Munich, Germany
2. Department of Neurology (P.J.M., J.K.), Klinikum Rechts der Isar, Technical University Munich, Germany
3. Institute of Diagnostic and Interventional Neuroradiology (P.J.M., J.K.), University Hospital Bern, Inselspital, University of Bern, Switzerland.
4. Department of Neurology (U.F., J.K.), University Hospital Bern, Inselspital, University of Bern, Switzerland.