Particularly successful examples are 68Ga-DOTATOC (7, 8) or 68Ga-PSMA-11 (9, 10), which selectively bind to the somatostatin receptor 2 (SSTR2) or prostate-specific membrane antigen (PSMA), respectively, that are highly expressed by NET or PCa, respectively. This evidence concerns the gene SSTR2 and posterior cortical atrophy.