1 Department of Medical Imaging, Division of Vascular Interventional Radiology, King Abdulaziz Medical City, National Guard Health Affairs, P.O. Box 22490, Mail code 1222, Riyadh, 11426, Saudi Arabia. marabi2004@hotmail.com.
2 Departments of Radiology and Neurosurgery, University of Michigan Health Centers, Ann Arbor, MI, USA.
3 Intensive Care Department, King Abdulaziz Medical City, Riyadh, Saudi Arabia.