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Pacemaker patients can finally get MRIs safely, study shows

NCT ID NCT00433654

Completed Disease control Sponsor: Medtronic Cardiac Rhythm and Heart Failure Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested a special pacemaker system designed to be safe during MRI scans. 484 people with slow heartbeats who needed a pacemaker took part. The pacemaker and its wires were implanted, and then some participants had an MRI of their head and lower back. The study found that the pacemaker worked well and caused few complications, even after the MRI.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Implantable pacemaker and leads
What this could lead to
If successful, this could allow people with pacemakers to safely undergo MRI scans, improving diagnosis and monitoring of other health conditions.
What could go wrong
This was a device safety study, not a treatment for the underlying condition. Results may not apply to all pacemaker models or MRI types.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Bradycardia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

BRADYCARDIA SLOW HEART BEAT

Contacts and locations

Locations

  • Study site

    Redwood City, California, United States

  • Study site

    Salinas, California, United States

  • Study site

    Orlando, Florida, United States

  • Study site

    Peachtree City, Georgia, United States

  • Study site

    Des Moines, Iowa, United States

  • Study site

    Minneapolis, Minnesota, United States

  • Study site

    Kansas City, Missouri, United States

  • Study site

    St Louis, Missouri, United States

  • Study site

    Mineola, New York, United States

  • Study site

    Cincinnati, Ohio, United States

  • Study site

    Cleveland, Ohio, United States

  • Study site

    Erie, Pennsylvania, United States

  • Study site

    Knoxville, Tennessee, United States

  • Study site

    Charlottesville, Virginia, United States

  • Study site

    Norfolk, Virginia, United States

  • Study site

    Graz, Austria

  • Study site

    Linz, Austria

  • Study site

    Liège, Belgium

  • Study site

    Mons, Belgium

  • Study site

    Calgary, Alberta, Canada

  • Study site

    Victoria, British Columbia, Canada

  • Study site

    Kingston, Ontario, Canada

  • Study site

    London, Ontario, Canada

  • Study site

    Montreal, Quebec, Canada

  • Study site

    Sainte-Foy, Quebec, Canada

  • Study site

    Prague, Czechia

  • Study site

    Rouen, France

  • Study site

    Bad Nauheim, Germany

  • Study site

    Bonn, Germany

  • Study site

    Dortmund, Germany

  • Study site

    Dresden, Germany

  • Study site

    Essen, Germany

  • Study site

    Göttingen, Germany

  • Study site

    Hamburg, Germany

  • Study site

    Marburg, Germany

  • Study site

    München, Germany

  • Study site

    Ulm, Germany

  • Study site

    Asti, Italy

  • Study site

    Pescia, Italy

  • Study site

    Pietra Ligure, Italy

  • Study site

    Viterbo, Italy

  • Study site

    Amsterdam, Netherlands

  • Study site

    Nieuwegein, Netherlands

  • Study site

    Zurich, Switzerland

  • Study site

    London, United Kingdom

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