Besides, the uptake in LNCaP tumor (SUVmean: 0.35 ± 0.02, p <0.001) and kidneys (SUVmean: 1.34 ± 0.08, p < 0.001) could be significantly blocked when co-injecting with 50 μg of ZJ-43 at 1 h p.i. In addition, due to the intensive accumulation of [18F]AlF-PSMA-137 in tumor and the fast clearance from the normal organs, the images with high tumor-to-non-target organ ratios resulted to relatively good tissue contrast. The gene discussed is FOLH1; the disease is neoplasm.