Patient case (clinical description): A 60-year-old man comes to the clinic complaining of hand tremor that started few months ago.  It is most bothering when he wants to drink from a glass or pour from a bottle. He does not smoke, but drinks occasionally. He recently started consuming more alcohol as his tremor subsides somewhat when he drinks small amounts of alcohol.  Family history is significant for similar problems in his mother.  Vital signs are normal and the patient has no other medical conditions.  Neurologic examination shows bilateral tremor in the upper extremities. The diagnosis of essential tremor is confirmed.

Patient's own account: I'm only a 60 years old man but I already suffer from shaky hands. It started a few months ago, and it really bothers me when I want to pour myself a glass or even while drinking. I don't smoke, but I drink alcohol from time to time. To be honest, I've been drinking a little more lately since it helps me with the shaking. My mom had the same issue when she was my age. The doctor took my vitals, and they were normal. I don't have any other medical issues. I underwent neurological exams and it showed that I’m shaky from both sides. The doctor diagnosed me with essential tremor.

Clinical trial: Imaging Study of Tremor Disorders

Eligibility criteria:
Inclusion Criteria:

          1. Men and women age 22 years or older;

          2. A diagnosis of ET and PD as confirmed from clinical history and examination by a
             neurologist or neurosurgeon specialized in movement disorder;

          3. Intolerance to side effects of medication or poor response to medication, severe and
             disabling tremor;

          4. Regarding PD patients, the ratio of mean Unified Parkinson Disease Rating Scale
             (UPDRS) tremor scores to the mean UPDRS postural instability/gait disorder scores
             equal or greater than 1.5;

          5. Able to communicate sensations during the ExAblate TcMRgFUS treatment;

          6. All MRI examination performed according to study protocol;

          7. Having complete medical history and clinical follow up;

          8. Imaging data can be processed.

        Exclusion Criteria:

          1. Subjects with unstable cardiac status;

          2. Severe hypertension (diastolic BP > 100 on medication);

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

          4. Known intolerance or allergies to the MRI contrast agent (e.g. Gadolinium or
             Magnevist) including advanced kidney disease;

          5. Patient with severely impaired renal function;

          6. History of abnormal bleeding and/or coagulopathy;

          7. History of immunocompromise including those who are HIV positive;

          8. History of intracranial hemorrhage;

          9. Cerebrovascular disease (multiple CVA or CVA within 6 months);

         10. Subjects with uncontrolled symptoms and signs of increased intracranial pressure
             (e.g., headache, nausea, vomiting, lethargy, papilledema);

         11. Individuals who are not able or willing to tolerate the required prolonged stationary
             supine position during treatment (can be up to 4 hrs of total table time);

         12. Significant claustrophobia that cannot be managed with mild medication;

         13. Presence of any other neurodegenerative disease such as Parkinson-plus syndromes
             suspected on neurological examination;

         14. Presence of significant cognitive impairment;

         15. Subjects with life-threatening systemic disease;

         16. Subjects with a history of seizures within the past year;

         17. Subjects with presence or history of psychosis. -
No condition on gender to be admitted to the trial.
Accepts Healthy Volunteers
Subject must be at least 22 Years old.
Subject must be at most 99 Years

Eligibility (NLI label): Entailment