We have performed PKM following application of a new PSMA specific radiotracer, [18F]rhPSMA-7.3, to investigate its suitability for imaging of the neo-vascularization in GBM and confirmed the findings by in vitro investigation using immunofluorescent imaging, western blot, and ex vivo autoradiography. The gene discussed is FOLH1; the disease is glioblastoma.