1. From the Neuroradiology Unit, Department of Technology and Diagnosis (L.C., A.E.), Diagnostic Radiology and Interventional Neuroradiology Unit, Department of Neurosurgery (V.O., E.C.), Neuropathology Unit, Department of Technology and Diagnosis (B.P.), and Department of Neurosurgery (M.B.), Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy; and Faculty of Medical Sciences, Department of Radiology, University of Kragujevac, Kragujevac, Serbia (V.O.).