Heart scans after COVID shot: new study aims to uncover hidden risks

NCT ID NCT04967807

Ongoing Knowledge-focused Sponsor: University Health Network, Toronto Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at 57 people who received a COVID-19 vaccine to understand why some develop heart injury or myocarditis. Researchers use advanced heart scans (PET/MRI) and blood tests to find early warning signs. The goal is to better identify those at risk and improve follow-up care.

What this could mean

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

What this could lead to: If successful, this study could help doctors identify people at risk for heart injury after COVID-19 vaccination and guide follow-up care.
What could go wrong: This is a small observational study (57 people) that does not test a treatment. It may not lead to changes in practice without larger studies.

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.

COVID-19 myocarditis

As listed by the trial registrant

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

CARDIAC MRI COVID-19 VACCINATION MYOCARDIAL INJURY MYOCARDITIS SARS-COV-2

Contacts and locations

Locations

University Health Network

Toronto, Ontario, M5G 2C4, Canada

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