1. UOSA Interventional Neuroradiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
2. U.O.C. Diagnostic Imaging, Interventional Radiology and Neuroradiology, Garibaldi Hospital, 95123 Catania, Italy
3. Diagnostic and Therapeutic Neuroradiology Unit, IRCCS INM Neuromed, 86077 Isernia, Italy
4. School of Medicine, Catholic University, 00168 Rome, Italy
5. Division of Anatomic Pathology and Histology, “Agostino Gemelli” School of Medicine, Catholic University of Sacred Heart, 00168 Rome, Italy
6. Department of Neuroradiology, Henri Mondor Hospital, 94000 Creteil, France