4. Method. Patients included in this study will have Choline PET/CT perfomed as part of another study. In addition a dual time point FDG-PET/CT will be performed. The FDP-PET/CT will be performed with acquisition 1 and 3 hours after administration of tracer. All scans are performed in random order within three weeks and the images interpreted by a specialist in nuclear medicine and a specialist in radiology.