Focused ultrasound (FUS) is a non-invasive technology to ablate a small volume of the globus pallidus region of the brain to reduce dyskinesia. While the procedure requires no surgery and is more easily tolerated than alternatives such as deep brain stimulation, it is irreversible.
During the FUS procedure, a patient is awake. No general anesthesia or surgical incisions are involved. Doctors use MRI brain scans to direct ultrasound beams to the target brain location.
Focused ultrasound typically decreases symptoms immediately. It does not require adjustment, programming or additional procedures. But it is irreversible and permanent.
When done on both sides of the brain, FUS may cause speech, swallowing or memory problems. So doctors only do the procedure on either the right or the left. (This means it only helps symptoms on one side of the body.) Other potential side effects include rare bleeding or skin infection.