From the Department of Radiology (Michelle A. Toruno, MD, Jonathan Cortese, MD, Sherief Ghozy, MD, Ramanathan Kadirvel, PhD and David F. Kallmes, MD) Mayo Clinic, Rochester, MN, USA; Mayo Clinic Alix School of Medicine (Tristan Meier, BS) Rochester, MN, USA. From the Department of Neurological Sciences (Mohamed Elfil, MD) University of Nebraska Medical Center, NE, USA; From Loyola University (Karthi Varshika, BS) Chicago, IL, USA; From the Department of Interventional Neuroradiology (NEURI vascular center) (Jonathan Cortese, MD), Bicetre University-Hospital, Le Kremlin-Bicetre, France. From the Department of Neurology, Mayo Clinic, (Sherief Ghozy, MD, and Ramanathan Kadirvel, PhD).