1. From the Neurovascular Imaging Research Core (D.S.L.) and Comprehensive Stroke Center and Department of Neurology, Division of Stroke, Geffen School of Medicine (D.S.L.), University of California, Los Angeles; Department of Neurology, John Hunter Hospital, University of Newcastle, Newcastle, Australia (M.W.P.); Department of Radiology, Neuroradiology Section, Stanford University, Palo Alto, CA (M.W.); Department of Neurology, Division of Stroke and Cerebrovascular Disease, Beth Israel Deaconess...