1. Department of Diagnostic and Molecular Imaging, Radiation Therapy and Interventional Radiology University Hospital Tor Vergata, Viale Oxford 81, 00133 Rome, Italy
2. Liver Unit, University Hospital Tor Vergata, Rome, Italy
3. IRCCS SDN, Naples, Italy
4. Organ Transplantation Unit, University Hospital Tor Vergata, Rome, Italy
5. Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY, United States