The comparative performance of dPET and aPET in Pca patients has also been evaluated using other radiotracers such as 18F-DCFPyL, where dPET outperformed aPET in subjects with biochemical failure and PSA < 0.5 ng/mL (69% vs. 37%) while no significant differences were found at higher PSA values [38]. This evidence concerns the gene KLK3 and posterior cortical atrophy.