This study looks at the long-term safety and effectiveness of a procedure called thalamotomy for people with Tremor Dominant Parkinson's Disease (TDPD). Thalamotomy is a surgery that helps reduce tremors, which are shaky movements. The study uses a machine called Exablate Neuro to perform this surgery. Participants have already had this procedure done on one side of their brain.

Researchers will check in with participants at different times: right after the surgery, and then at 1, 3, 6, and 12 months, and then once a year for five years. They'll look at Adverse Events (AEs), which are any side effects or problems, and also how much medication you need, and how well the treatment works using special tests like Clinical Rating Scale for Tremor (CRST) and Unified Parkinson's Disease Rating Scale.

• Participation lasts up to 5 years with regular check-ups.
• Participants need to be 30 years or older.
• You must be willing to follow all study rules and attend all visits.