1. Department of Radiology, IRCCS San Raffaele Hospital, Milan, Italy
2. University Vita-Salute San Raffaele, Milan, Italy
3. Department of Medical Physics, San Raffaele Scientific Institute, Milan, Italy
4. Hepatobiliary Surgery Division, IRCCS San Raffaele Hospital, Milan, Italy
5. Unit of Oncology, IRCCS San Raffaele Scientific Institute, Milan, Italy
6. School of Engineering, Cardiff University, Cardiff, UK
7. Department of Medical Physics, Velindre Cancer Centre, Cardiff, UK