Furthermore, imaging parameters such as the maximum or mean standardized uptake value (SUVmax or SUVmean), total-lesion PSMA (TLP) or the molecular-tumor volume (MTV) have also become the focus of research because, in a theranostic setting, the treatment response of patients undergoing RLT is often closely monitored using PSMA-positron emission tomography/computed tomography (PET/CT) [9, 10]. The gene discussed is FOLH1; the disease is neoplasm.