1. Department of Medical Imaging, University Hospital of Heraklion, 71110 Heraklion, Greece
2. Department of Radiology, School of Medicine, University of Crete, Voutes Campus, 71003 Heraklion, Greece
3. Department of Radiology, Karolinska University Hospital, 14152 Stockholm, Sweden
4. Division of Radiology, Department for Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, 14152 Stockholm, Sweden
5. Medical Radiation Physics and Nuclear Medicine, Section for Nuclear Medicine, Karolinska University Hospital, 14186 Huddinge, Stockholm, Sweden