MRI scans for pacemaker patients: no special vetting needed?
NCT ID NCT02888353
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether MRI scans are safe for people with pacemakers or implantable defibrillators, without the usual strict pre-screening. Researchers will scan up to 4,500 patients who need an MRI and check for device changes right after and weeks later. The goal is to see if current safety rules can be relaxed.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- MRI scan
- What this could lead to
- If successful, this could show that MRI is safe for most people with pacemakers or defibrillators, removing current restrictions.
- What could go wrong
- The study is observational and not randomized, so results may not apply to all devices or patients. Rare device malfunctions could still occur.
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 4,500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2015
- Expected to finish
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Feb 2027
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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9 to 100 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: * Patients implanted an ICD or pacemaker who have a clinical need for MR imaging Exclusion Criteria: * Patients who complete the MRI standard screening form and are deemed inappropriate for MRI for any reason
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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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Johns Hopkins Hospital, Zayed 5 MRI
Baltimore, Maryland, 21287, United States