Trial of MR-guided Focused Ultrasound (MRgFUS) Bilateral Capsulotomy for the Treatment of Refractory Obsessive-compulsive Disorder (OCD)

Exclusion Criteria

• •1. Patients with unstable cardiac status \[e.g. Unstable angina pectoris on medication, Patients with documented myocardial infarction within six months, Congestive heart failure requiring medication (other than diuretic), Patients on anti-arrhythmic drugs, Severe hypertension (diastolic BP \> 100 on medication)\]
• •2. Patients with standard contraindications for MR imaging such as non-MRI compatible implanted metallic devices including cardiac pacemakers, size limitations, etc.
• •3. Known intolerance or allergies to MRI contrast agent (e.g. Gadolinium or Magnevist) including advanced kidney disease
• •4. Severely impaired renal function (estimated glomerular filtration rate \< 30ml/min/1.73 m2) or receiving dialysis
• •5. Laboratory biochemical evidence of abnormal bleeding and/or coagulopathy, including risk factors for intraoperative or postoperative bleeding (platelet count less than 100,000 per cubic millimeter or abnormal INR)
• •6. Cerebrovascular disease (e.g. cerebrovascular accident within 6 months) or history of intracranial hemorrhage
• •7. Untreated, uncontrolled sleep apnea
• •8. Receiving anticoagulant (e.g. warfarin) or antiplatelet (e.g. aspirin) therapy within one week of focused ultrasound procedure or drugs known to increase risk or hemorrhage (e.g. Avastin) within one month of focused ultrasound procedure
• •9. Individuals who are not able or willing to tolerate the required prolonged stationary supine position during treatment
• •10. Are participating or have participated in another clinical trial in the last 30 days
• •11. Patients unable to communicate with the investigator and staff.
• •12. Presence of significant cognitive impairment
• •13. Presence of psychosis on clinical evaluation.
• •14. Patients with brain tumors already known or revealed on pretreatment MRI
• •15. Currently pregnant (as determined by history and serum HCG) or lactating.
• •16. Chemical abuse or dependence within the previous six months