Affiliation: | 1.Department of Radiology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA ;2.Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA ;3.Department of Neuroradiology, George Washington University Hospital, Washington, DC, USA ;4.Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA, USA ; |