FOLH1 and neoplasm: In this comparison, [68Ga]Ga-PSMA-617 has more than twice the values of inhibitor [68Ga]Ga-P16, more than 1.6 times the levels of inhibitor [68Ga]Ga-P19 and almost 7.5 times the levels of inhibitor [68Ga]Ga-P15 one-hour p.i. Inhibitor [68Ga]Ga-P19 has a higher tumour-to-muscle ratio at two-hours p.i. at one-hour p.i., and the values are closer to those of [68Ga]Ga-PSMA-617.