1. Medical and Surgical Department of Digestive, Hepatic and Endocrine-Metabolic Diseases, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
2. Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
3. Department of Medical and Surgical Sciences (DIMEC), University of Bologna, 40138 Bologna, Italy
4. Department of Nuclear Medicine, IRCCS Azienda Ospedaliero-University of Bologna, 40138 Bologna, Italy
5. Department of Computer Science and Engineering (DISI), University of Bologna, 40126 Bologna, Italy
6. Advanced Research Center on Electronic Systems (ARCES), University of Bologna, 40125 Bologna, Italy
7. Interventional Radiology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
8. Radiology Unit, “Infermi” Hospital, 48018 Faenza, Italy
9. SIRM Foundation, Italian Society of Medical and Interventional Radiology, 20122 Milano, Italy