Could a simple CT scan save heart bypass patients from future attacks?

NCT ID NCT07165678

Diagnosis Sponsor: Queen Mary University of London Source: ClinicalTrials.gov ↗

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

Summary

This study looks at whether doing a CT scan of the heart's arteries before the usual catheter procedure can lower the risk of death, heart attack, stroke, or hospital stays in people who have had bypass surgery. About 1000 participants will be randomly assigned to get the CT scan first or go straight to catheterization. The goal is to see if the CT-guided approach is safer and more effective.

What this could mean

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

Active substance: Computed Tomography Coronary Angiography (CTCA) scan
What this could lead to: If successful, this could make heart imaging safer and more effective for bypass patients, potentially reducing complications and hospital visits.
What could go wrong: This is a mid-stage trial with 1000 participants, so results may not apply to all patients. CTCA might not improve outcomes or could lead to extra testing.

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

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

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2026

Expected to finish

Jul 2029

An estimate. End dates often move.

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Aged ≥18 * Previous coronary artery bypass grafting (CABG) * An indication for coronary angiography * Angina * Ischaemia on perfusion imaging * Acute coronary syndrome * Patients are able and willing to give their written informed consent Exclusion Criteria: * Subjects presenting with ST segment myocardial infarction within window for primary PCI * Patients considered unsuitable to participate by the research team (e.g. due to medical reasons, laboratory abnormalities, or subject's unwillingness to comply with all study related procedures) * Life expectancy less than 1 year

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Conditions

The condition(s) this trial relates to.

Angina Pectoris coronary artery disorder Coronary Disease

As listed by the trial registrant

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

Coronary heart disease

How to take part

Only the study team decides who joins. These are the ways to reach them.

The places running it

1 site. The list below names each one and where it is.
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.

Could a simple CT scan save heart bypass patients from future attacks?

What the study statuses mean