Trial Search Results

ExAblate Transcranial MR Guided Focused Ultrasound for the Treatment of Essential Tremors

The objective of this prospective, randomized, double-blind (to subjects, local site's blinded assessor and Tremor Core Lab assessors), crossover, multi-site, two-arm study (ExAblate treated arm Vs ExAblate Sham treated control arm) is to test the efficacy of treatment using the ExAblate Transcranial System and to further demonstrate safety in medication-refractory tremor in subjects with essential tremor (ET).

Stanford is currently not accepting patients for this trial.

Lead Sponsor:


Stanford Investigator(s):


  • Device: Transcranial ExAblate
  • Device: Sham Transcranial ExAblate




Inclusion Criteria:

   - Men and women, age 22 years and older

   - Subjects who are able and willing to give informed consent and able to attend all
   study visits

   - Subjects with a diagnosis of Essential Tremor as confirmed from clinical history and
   examination by a neurologist or neurosurgeon specialized in movement disorder

   - Subject exhibits a significant disability from their ET despite medical treatment

   - Subjects should be on a stable dose of all ET medications for 30 days prior to study

   - Subject is able to communicate sensations during the ExAblate Transcranial procedure

Exclusion Criteria:

   - Subjects with unstable cardiac status

   - Severe hypertension

   - Subjects with standard contraindications for MR imaging such as non-MRI compatible
   implanted metallic devices including cardiac pacemakers, size limitations, etc.

   - Known intolerance or allergies to the MRI contrast agent including advanced kidney
   disease or severely impaired renal function

   - Significant claustrophobia that cannot be managed with mild medication

   - Current medical condition resulting in abnormal bleeding and/or coagulopathy

   - Receiving anticoagulant (e.g. warfarin) or antiplatelet (e.g. aspirin) therapy within
   one week of focused ultrasound procedure or drugs known to increase risk or hemorrhage

   - History of intracranial hemorrhage

   - History of multiple strokes, or a stroke within past 6 months

   - Subjects who are not able or willing to tolerate the required prolonged stationary
   supine position during treatment

   - Are participating or have participated in another clinical trial in the last 30 days

   - Subjects unable to communicate with the investigator and staff

   - Subjects with a history of seizures within the past year

   - Subjects with brain tumors

Ages Eligible for Study

22 Years - N/A

Genders Eligible for Study


Not currently accepting new patients for this trial

Contact Information

Stanford University
School of Medicine
300 Pasteur Drive
Stanford, CA 94305
Jennifer Lillian Marcellus
Not Recruiting