The optimal timing to perform 18F/11C-choline PET/CT in patients with suspicion of relapse of prostate cancer: Trigger PSA versus PSA velocity and PSA doubling time

In the present short communication we considered the main publications focused on trigger prostate-specific antigen (PSA) and PSA kinetics that systematically compared 18F to 11C-choline PET/CT in order to establish the optimal time to perform choline PET/CT in relation to the trigger values and velocity, as well as doubling time of PSA serum levels.