Focused Ultrasound is an incisionless treatment for patients with Essential Tremor (ET) and Tremor Dominant Parkinson’s Disease (TDPD) who have not responded to medication. It uses high intensity ultrasound waves guided by MRI to treat deep areas in the brain associated with tremor, with no permanent implants or general anesthesia. There is little to no risk of infection and patients usually return home the same day with immediate tremor improvements.