1. From the Division of Neurointerventional Surgery, CNS Healthcare Foundation, Akron, OH (F.A.-A., G.Z.M., Z.A.-A.); Department of Radiology (T.A.T.) and Department of Neurology and Rehabilitation Medicine (J.P.B.), University of Cincinnati Neuroscience Institute, OH; Department of Radiology, Vanderbilt University Medical Center, Nashville, TN (J.J.C.); and Department of Neurology (J.M.G.) and Department of Research (J.J.E.), Akron General Medical Center, OH.