FOLH1 and neoplasm: The tumor-to-muscle ratios of [177Lu]Lu-PSMA-Q, [177Lu]Lu-PSMA-BP, [177Lu]Lu-PSMA-4PY and [177Lu]Lu-PSMA-617 were 16.77 ± 3.27, 10.21 ± 5.66, 7.54 ± 3.85 and 14.51 ± 4.64, respectively.