FOLH1 and neoplasm: Consistent with the 68Ga-PSMA-TO-1/-617 PET imaging findings, tumor uptake at 1 h post-administration tended to be higher for 177Lu-PSMA-617 than 177Lu-PSMA-TO-1, though it did not reach statistical significance (14.4 vs. 10.2%IA/g; p = 0.207).