This is a prospective monocentric open study (Phase II study). The study will include 50 consecutive PCa patients who will be recruited in the first 36 months of the study. All clinical and pathological variables available at the time of PET/MRI will be recorded for each patient and all patients will take a blood sample before the first PET/MRI study. All patients will undergo 68Ga-PSMA and 68Ga-RM2 PET/MRI studies at San Raffaele Hospital in two different days (\> 48 hours between the two studies) and within one month from each other.
Then, patients will undergo surgical intervention (prostatectomy and pelvic/retroperitoneal lymphadenectomy) and the surgically removed prostate will be fixated and processed. Ex-vivo 3T-MRI study will be performed on the processed specimen (prostate gland) and afterwards, the prostate will be examined by a dedicated pathologist. Spatial coregistration of in vivo, ex-vivo and histopathological images will be performed so that the annotation (dominant tumor lesion) made by the pathologist will be translated onto in vivo PET/MR images and semi-quantitative and radiomic features will be extracted from PET and mp-MRI images
