Magnetic Resonance Imaging (MRI) With Hyperpolarized Pyruvate (13C) as Diagnostic Tool in Advanced Prostate Cancer

This study is testing a new type of MRI scan that uses a special molecule (hyperpolarized carbon-13 pyruvate) to track how tumors use energy. This metabolic imaging technique may reveal information about prostate cancer that standard scans cannot, helping doctors better understand tumor activity and treatment response. **You may be eligible if:** - You have confirmed locally advanced or metastatic prostate cancer - You have at least one tumor visible on standard scans that is large enough and in a location suitable for the new imaging technique - You have not had prior surgery to remove the prostate (for some imaging targets) **You may NOT be eligible if:** - You have certain implanted devices or conditions that prevent MRI scanning - Your target lesion is in the prostate and you have had the prostate surgically removed - You are unable to tolerate MRI procedures Talk to your doctor to see if this trial is right for you.