FOLH1 and posterior cortical atrophy: Positron emission tomography (PET) in combination with CT (PET/CT) using 68 Ga-PSMA as radiotracer has emerged as a useful technique for the diagnosis of bone metastases in patients with PCa, showing robust performance, with a patient-based sensitivity and specificity of 98.7–100% and 88.2–100%, respectively [11–13].