FOLH1 and neoplasm: The tumor uptakes of [68Ga]Ga-PSMA-Q-1 (SUVmax = 0.86 ± 0.09), [68Ga]Ga-PSMA-Q-3 (SUVmax = 0.88 ± 0.18), and [68Ga]Ga-PSMA-4PY (SUVmax = 0.69 ± 0.26) were slightly lower than those of [68Ga]Ga-PSMA-Q and [68Ga]Ga-PSMA-617, with no significant differences, but the tumor-to-muscle ratio for both of them (32.94 ± 4.56 for [68Ga]Ga-PSMA-Q-1 and 27.20 ± 9.80 for [68Ga]Ga-PSMA-Q-3) was significantly lower than that of [68Ga]Ga-PSMA-Q.