The diagnostic performances of PSMA-based imaging and 18F-FDG have been compared by several authors, mainly in case reports, in thyroid cancer [20,21,22,23,111,112,113,114,115,116], adenoid cystic carcinoma [14], HCC [34], lung cancer [72], gastric carcinoma [75], colorectal cancer [84], pancreatic tumors [96], renal cell carcinomas [44,45,46,48], urothelial carcinoma [100,117], Ewing sarcoma [118] and metastatic osterosarcoma [119]. This evidence concerns the gene FOLH1 and thyroid cancer.