Ning Lin1, L Nelson Hopkins. 1. *Department of Neurosurgery, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York; ‡Department of Neurosurgery, Gates Vascular Institute, Kaleida Health, Buffalo, New York; §Department of Radiology, School of Medicine and Biomedical Sciences, University at Buffalo, State University of New York, Buffalo, New York; ‖Toshiba Stroke and Vascular Research Center, University at Buffalo, State University of New York, Buffalo, New York; ¶Jacobs Institute, Buffalo, New York.