Inclusion Criteria:

          -  Intermediate risk prostate cancer patients will be eligible for this study. Risk
             groups will be assigned as per NCCN guidelines. Intermediate risk patients will be
             defined as:

               -  PSA 10-20 ng/ml or

               -  Gleason score = 7 or

               -  Clinical stage T2b/T2c

          -  Additionally, patients will be required to meet the following criteria:

               -  Age ≥ 18

               -  KPS ≥ 80

               -  Prostate size ≤ 60cc

               -  Presence of a prostatic lesion with maximum dimension of >/= 0.5cm and no more
                  than two additional disease foci, each with a maximum dimension less than that of
                  the dominant lesion.

               -  International Prostrate Symptom Score ≤ 15

               -  Subjects must fill out the standard MRI screening form and satisfy all MRI
                  screening criteria

        Exclusion Criteria:

          -  Prior androgen deprivation therapy for prostate cancer

          -  Evidence of metastatic disease on bone scan or MRI/CT

          -  MRI ineligibility due to the presence of a cardiac pacemaker, defibrillator or other
             implanted metallic or electronic device which is considered MR unsafe, severe
             claustrophobia or inability to lie flat for the duration of the study, etc.

          -  Metallic hip implant, metallic implant or device in the pelvis that might distort the
             local magnetic field and compromise quality of MP-MRI.

          -  Lateral pelvic separation greater than 50 cm and/or anterior-posterior separation
             greater than 35 cm which are incompatible with MRCAT reconstruction

          -  Contra-indications to receiving gadolinium contrast

          -  KPS < 80

          -  Pelvic MRI or CT (MRI preferred) evidence of radiographic T3, T4 or N1 disease.

          -  Prior history of transurethral resection of the prostate

          -  Prior history of chronic prostatitis

          -  Prior history of urethral stricture

          -  Prior history of pelvic irradiation

          -  History of inflammatory bowel disease

          -  Unable to give informed consent

          -  Unable to complete quality of life questionnaires

          -  Abnormal complete blood count. Any of the following

               -  Platelet count less than 75,000/ml

               -  Hb level less than 10 gm/dl

               -  WBC less than 3.5/ml

          -  Abnormal renal function tests (creatinine > 1.5)