1. From the Department of Radiologic, Oncologic and Pathologic Sciences (A.N., R.S., M.A., C.C.) and Pediatric Surgery Unit (D.A.C.), Sapienza University of Rome, School of Medicine, V.le Regina Elena 324, 00180 Rome, Italy; Department of Radiology, Rizzoli Orthopedic Institute, University of Bologna, Bologna, Italy (A.B.); Department of Radiology, Azienda Ospedaliero Universitaria di Cagliari - Polo di Monserrato, University of Cagliari, Cagliari, Italy (L.S.); and Department of Radiology, Stanford...