1. From the Department of Experimental Neurology, Center for Stroke Research (P.B.S., S.M.), Department of Radiology (A.H., R.H., E.A.S.), and Charité Core Facility 7T Experimental MRIs (P.B.S., S.M.), Charité–Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany; and Department of Diagnostic and Interventional Radiology, University of Aachen, Aachen, Germany (C.K.K.).