1. From the Department of Neuroradiology (P.S., T.K., J.R., A.T.), Interdisciplinary Center for Clinical Research—Central Nervous System (T.K., K.W., F.R., J.R., A.T.), and Division of Neuropsychology of the Department of Neurology (K.W.), University Hospital of the RWTH Aachen, Aachen, Germany.