1. Neuroradiology Unit, University Hospital A.O.U. Policlinico “G. Martino” - Messina, Italy
2. Operative Unit of Neuroradiology, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, Milan, Italy
3. Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany
4. Neuroradiology Unit, University Hospital A.O.U. “G. Martino” Messina, Italy
5. Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, Italy