1 Interventional Radiology Unit, Department of Diagnostic Imaging, E.O. Galliera Hospital, Mura delle Cappuccine, 14, 16128, Genoa, Italy. urossi76@hotmail.com.
2 Postraduation School of Radiodiagnostics, University of Milano, Piazza Edmondo Malan, 1, San Donato Milanese, 20097, Milan, Italy.
3 Radiology and Interventional Radiology Unit, Advanced Technology Department of Diagnostic and Therapy, ASST Santi Paolo and Carlo - San Carlo Borromeo Hospital, Via Pio II, 3, 20153, Milan, Italy.