Dario Giambelluca1, Adele Taibbi2, Massimo Midiri2, Tommaso Vincenzo Bartolotta2. 1. Section of Radiological Sciences, Di.Bi.Med., University of Palermo, Via del Vespro 127, 90127, Palermo, Italy. dariojambo@hotmail.it. 2. Section of Radiological Sciences, Di.Bi.Med., University of Palermo, Via del Vespro 127, 90127, Palermo, Italy.