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Parkinson's DiseaseDecember 2017Summary reviewed July 2026

Focused Ultrasound Cut Parkinson's Hand Tremors by 62% in Treatment-Resistant Patients

Researchers tested a non-invasive brain procedure using focused ultrasound waves to calm tremors in Parkinson's patients whose medications had stopped working. The treatment reduced hand tremors by 62% compared to 22% in patients who received a fake procedure.

What the trial was testing

The trial enrolled 27 patients with parkinson's disease. The study was sponsored by InSightec and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

Researchers followed patients through treatment and into recovery, tracking the outcomes that mattered most for the disease being studied.

What the results showed

Focused ultrasound reduced medication-resistant Parkinson's tremors by 62%.

JAMA neurology · 2017 · NCT01772693

These findings — that hand tremors improved by nearly two-thirds in patients who got the real ultrasound treatment — were published in the JAMA neurology and represent the headline result of the study.

Researchers tracked outcomes across 27 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with parkinson's disease, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

This treatment uses MRI-guided ultrasound to target a specific brain area without surgery. It is FDA-approved for essential tremor and Parkinson's tremor. If your tremors aren't controlled by medication, ask your neurologist whether you're a candidate for this procedure.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.