Mp-3TMRI and 68Ga-PSMA PET/CT Guided Prostate Biopsy and Tumor Node Metastasis (TNM) Staging.

The aim of this study is to characterize the diagnostic accuracy of both multi-parametric pelvic Magnetic Resonance Imaging (MRI) (T2-weighted, Diffusion Weighted Imaging (DWI), Dynamic Contrast Enhancement (DCE) and 68Ga-chelated Prostate Specific Membrane Antigen ligand (68Ga-PSMA) Positron Emission Tomography/Computed Tomography (PET /CT) in three cohorts of patients: * COHORT 1 Guiding prostate biopsies in men with clinical suspicion and/or unconfirmed clinically-significant prostate cancer (CS-PCa) on initial prostate biopsy; * COHORT 2 Targeting repeat prostate biopsy in patients on Active Surveillance (PRIAS Study), scheduled for PRIAS repeat biopsy; * COHORT 3 Providing pelvic / whole-body pre-surgical staging in: * 3a: men with high-risk PCa (HR-PCa); * 3b: men candidates for nerve sparing surgery (NSS);