App aims to cut unnecessary brain scans for head injury patients
NCT ID NCT04002505
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether an app that helps patients and doctors make decisions together can lower the number of CT scans for people with minor head injuries. About 370 adults aged 18-65 who are at low risk for serious brain injury will use the app in the emergency department. The goal is to see if shared decision-making reduces unnecessary scans without missing serious problems.
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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 370 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jun 2019
- Expected to finish
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Dec 2030
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 65 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * 18-65 years old * Present to the Emergency Department with a blunt head injury within the past 24 hours * Determined to be low risk by the Canadian CT Head Rules (CCHR), and are being considered for a head CT by the treating provider. Exclusion Criteria: * Patients who are pregnant * Non-English speaking * In police custody * Undergoing psychiatric evaluation * Found to have drug or alcohol intoxication
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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
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Blood test may spare thousands from unnecessary head scans
- Survey aims to improve care for older fall victims on blood thinners