1. Age greater than 40 and less than 80 years

2. Clinical suspicion or history of prostate cancer reflected by one of the following:

* PSA \> 4ng/ml

* Abnormal DRE exam

* Known tissue diagnosis of prostate cancer from prior workup

3. Patient planning to undergo either a MRI targeted biopsy or radical prostatectomy for prostate cancer workup or treatment

Utility of Hyperpolarized 13C-pyruvate Metabolic Magnetic Resonance Imaging