Safety Evaluation of ExAblate MRgFUS for Prostate Cancer

Inclusion Criteria: * Age of patients: up to 75 years. * Men scheduled for radical prostatectomy due to prostate cancer. * Patients who are able and willing to give consent and able to attend all study visits. Exclusion Criteria: * Contraindications to MRI including: claustrophobia, weight over 120 kg, implanted ferromagnetic materials or foreign objects, and known intolerance to the MRI contrast agent (e.g. Gadolinium or Magnevist) * Severely abnormal coagulation (INR\>1.5) * Patients with unstable cardiac status including: unstable angina pectoris on medication, patients with documented myocardial infarction within six months of protocol entry, congestive heart failure requiring medication (other than diuretic), patients on anti-arrhythmic drugs, severe hypertension (diastolic BP \> 100 on medication), and patients with cardiac pacemakers * Severe cerebrovascular disease (multiple CVA or CVA within 6 months) * Individuals who are not able or willing to tolerate the required prolonged stationary supine position during imaging (approximately 1 hrs.) * Any rectal pathology preventing probe insertion, (as active proctitis, ulcerative colitis, fissure ani, diverticulitis, previous rectal surgery, IBD, etc…) * Any spinal pathology that prohibits maintaining supine position for more then an hour * Any previous radiation to the pelvis.