1. Department of Emergency Radiology, University Hospital Careggi, Largo Brambilla 3, 50134 Florence, Italy
2. Experimental Imaging Center, San Raffaele Scientific Institute, Via Olgettina 60, 20100 Milan, Italy
3. School of Medicine, Vita-Salute San Raffaele University, Via Olgettina 58, 20132 Milan, Italy
4. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, Via Vetoio 1, 67100 L’Aquila, Italy