When different cell lines and different tumor size of PCa xenografts were considered, tumor uptake of  68Ga-PSMA-11 (% ID/cm3) on micro PET correlated well with PSMA expression determined by flow cytometry in linear manner (y = 9.35x + 2.59, R2 = 0.8924, and p < 0.0001). This evidence concerns the gene FOLH1 and posterior cortical atrophy.