Both 18F-labeled analogs, named EuE-k-18F-FBOA and EuE-k-ß-a-18F-FPyl, were subsequently evaluated in terms of PSMA affinity, internalization in LNCaP PCa cells, metabolic stability, micro PET imaging, and in vivo biodistribution. The gene discussed is FOLH1; the disease is posterior cortical atrophy.