A Post-Approval Registry for Exablate 4000 Type 1.0 and Type 1.1 for Unilateral Thalamotomy for the Treatment of Medication-Refractory Tremor Dominant Idiopathic Parkinson's Disease

This is a registry (a type of observational study) that follows patients with Parkinson's disease who are being treated with a device called Exablate 4000, which uses focused ultrasound to treat tremors without surgery. It tracks long-term outcomes after this FDA-approved treatment. **You may be eligible if...** - You are 30 years or older - You are undergoing or have had the Exablate focused ultrasound procedure for tremor-dominant Parkinson's disease - You are willing to attend all registry follow-up visits - You have signed the informed consent form **You may NOT be eligible if...** - You are not willing or unlikely to participate for the full duration of the study Talk to your doctor to see if this trial is right for you.