Using focused ultrasound on the amygdala to treat bipolar disorder

Low-Intensity Focused Ultrasound of the Amygdala for Bipolar Disorder

Early Phase 1 Interventional Massachusetts General Hospital · NCT06482762

This study is testing if focused ultrasound on a specific part of the brain can help improve mood and emotional control in people with bipolar disorder.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment20 (estimated)
Ages18 Years to 64 Years
SexAll
SponsorMassachusetts General Hospital Academic / other
Locations1 site (Boston, Massachusetts)
Trial IDNCT06482762 on ClinicalTrials.gov

What this trial studies

This study investigates the feasibility and therapeutic potential of transcranial focused ultrasound (tFUS) targeting the amygdala as a treatment for bipolar disorder (BD). The researchers will assess the effects of tFUS on brain activation during emotion regulation tasks and its impact on resting-state functional connectivity in individuals with BD. The study aims to explore the relationship between changes in amygdala activity due to tFUS and mood symptoms in patients. By examining these effects, the study seeks to identify a new, tolerable treatment option for those suffering from BD.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18-64 with a primary diagnosis of bipolar disorder who meet specific mood symptom criteria.

Not a fit: Patients with active neurological disorders, current psychosis symptoms, or contraindications for MRI scans may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a novel and tolerable treatment option for patients with bipolar disorder.

How similar studies have performed: While neuromodulation techniques like transcranial magnetic stimulation have shown success in treating mood disorders, the specific use of tFUS for bipolar disorder is a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Primary diagnosis of BD (can be BD-I or BD-II)
2. Age 18-64
3. Normal or corrected-to normal vision and hearing
4. YMRS ≤ 12
5. BDI ≥ 14

Exclusion Criteria:

1. Active neurological disorder
2. Current psychosis symptoms
3. MRI scan contraindications (e.g., metal implant, claustrophobia, weigh over 250 pounds, etc.)
4. YMRS \> 13
5. BDI \< 14

Where this trial is running

Boston, Massachusetts

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions BipolarUltrasound
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.