1 Department of Neurointervention, Dalian Municipal Central Hospital, China (D.L., T.H.).
2 Department of Neurology and Psychiatry, Emergency and Critical Care Medical Center, Beijing Shijitan Hospital (T.T., S.L.), Capital Medical University, China.
3 The Russell H. Morgan Department of Radiology and Radiological Sciences, the Johns Hopkins University School of Medicine, Baltimore, MD (A.M.T.).
4 Beijing Institute of Brain Disorders (S.L.), Capital Medical University, China.