1. Department of Radiological, Oncological and Pathological Sciences, “Sapienza” University of Rome, Rome, Italy
2. Physics Department, CNR Institute for Complex Systems (ISC), “Sapienza” University of Rome, Rome, Italy
3. Siemens Healthcare GmbH, Erlangen, Germany
4. Department of Gynaecological-Obstetrical and Urological Sciences, “Sapienza” University of Rome, Rome, Italy