Prof. Ossama Yassin Professor of Clinical Neurological Interventions and Neuroradiology, Faculty of Medicine- Alexandria University Director of the Stroke and Neurological Interventions Unit Special lecturer at Britt Ludwig University President of Minna-Sino University Vice President of the American University of Neurological Interventions for the Middle East and North Africa Member of the Executive Council of the American University of Neurological Interventions Member of the Executive Board of the World Stroke Organization Doctorate in Neurology, Faculty of Medicine, Alexandria University Ph.D. in Therapeutic and interventional catheterization for brain, nerves, and Spine Diseases, University of Freiburg - Germany Consultant in Therapeutic and interventional catheterization for brain, nerves, and Spine Diseases, University of Freiburg - Germany Assistant Professor, Faculty of Medicine, Alexandria University Fellowship from Albert University - Ludwig - Germany Fellowship of Bicêtre University, France