1. Departments of Radiology and Clinical Neurosciences, Calgary Stroke Program, University of Calgary, Calgary, Alberta, Canada (M.G., M.A.A., B.K.M., A.M.D., M.D.H., M.E.); Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia (M.A.A.); Department of Public Health Sciences, Medical University of South Carolina, Charleston (L.F., S.D.Y.); Departments of Neurology and Radiology, University of Cincinnati, Cincinnati, OH (T.T., P.K., J.P.B.); Department of Radiology, Medical College of...