1. Nuclear Medicine Unit, University Hospital Sant’Andrea, Via di Grottarossa 1035, 00189 Rome, Italy
2. Nuclear Medicine Unit, IRCCS National Cancer Institute, Fondazione Senatore G. Pascale, 80127 Naples, Italy
3. Nuclear Medicine Unit, Department of Medical-Surgical Sciences and of Translational Medicine, Faculty of Medicine and Psychology, “Sapienza” University, 00184 Rome, Italy
4. U.O.C. Diagnostic Imaging, PTV Policlinico “Tor Vergata” University, Viale Oxford 81, 00133 Rome, Italy