Sound waves against addiction: helmet zaps brain to curb substance use
NCT ID NCT07684976
First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time
Summary
This trial tests whether a helmet that delivers focused ultrasound waves can safely change brain activity in people with moderate-to-severe substance use disorder who haven't responded to medication. Participants receive two MRI-guided sessions targeting brain regions linked to addiction. The study aims to see if this approach reduces substance use and is safe.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Next Generation Dome Helmet (NGDH) — a device that delivers low-intensity focused ultrasound to specific brain areas
- What this could lead to
- If successful, this could offer a non-invasive, drug-free way to reduce substance use severity in people with treatment-resistant addiction.
- What could go wrong
- This is an early feasibility study with only 20 participants, so results may not apply broadly. The treatment may not reduce substance use, and risks from brain ultrasound are still being assessed.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jul 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Must be deemed to have capacity to provide informed consent (determined by the investigator) 2. Age between 18 to 70 (inclusive) 3. Diagnosis of SUD (cannabis, alcohol, ketamine, stimulant, opioid or nicotine/tobacco use disorder) in the moderate to severe range according to the DSM-5 4. Previous ≥2 pharmacotherapy trials for the diagnosed SUD according to guideline-concordant, evidence-based care 5. On a stable regimen of their psychiatric medications for 30 days before enrolment. Exclusion Criteria: 1. Pregnant or intending to be pregnant during the study 2. Known active seizure disorder, significant head injury with an imaging verified lesion 3. Medical illness that is deemed to be unstable or may confound the effects of the intervention 4. Not eligible for 3-Tesla MRI (i.e. MRI-incompatible pacemaker) 5. Unable to reliably attend the required screening, treatment, and follow up appointments. 6. Severe claustrophobia, identified by the subject to be a limiting factor preventing MRI. 7. Scores 18 or below on Montreal Cognitive Assessment (MoCA) 8. Weighs 250 lbs or more.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Sunnybrook Health Sciences Centre
RECRUITINGToronto, Ontario, M4N 3M5, Canada
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