FOLH1 and posterior cortical atrophy: There is variation in the bladder radioactivity between the different PSMA radioligands for PCa PET imaging, with 18F-PSMA-1007 demonstrating the lowest, 68Ga-PSMA-11 and 18F-DCFPyL the highest, and 18F-rhPSMA-7.3 intermediate bladder activity level.