Using FAPI PET/MRI to Evaluate Prostate Cancer

Inclusion Criteria: * Age 18 years or older * Able and willing to provide informed consent * Known diagnosis of prostate cancer * Scheduled for or recently performed (within 4 weeks) standard-of-care PSMA PET * Optional: Scheduled for SOC biopsy of an established or suspected non-osseous, non-nodal metastases. * Willing and able to undergo PET/MRI as part of this research Exclusion Criteria: * Unable or unwilling to provide informed consent * Contraindication(s) to or inability to undergo PET/MRI * Participants for whom PET/MRI will delay timely delivery of treatment * Participants requiring intravenous (IV) conscious sedation for imaging care; those requiring mild, oral anxiolytics for the clinical MRI will be allowed to participate as long as the following criteria are met: * Have their own prescription for the medication * The informed consent process is conducted prior to the self-administration of this medication * Come to the research visit with a driver