Image Reading and Standard of Truth
RECURRENCE
PET images were read on-site on the day of acquisition by investigators who were not masked regarding clinical data and were transferred to a core imaging laboratory where they were evaluated by 3 independent masked readers (supplemental materials). The composite standard of truth (recurrence, no recurrence, or undetermined) at the time of imaging was determined by an independent expert panel that considered all available clinical patient data from before inclusion to the end of the follow-up period, excluding all information from PET/CT (supplemental materials). The expert panel consisted of a urologist, a radiologist, and a nuclear physician; they reached their conclusions by consensus.