There is no radiation involved, and the scan is completely safe. If you experience claustrophobia, let your doctor know so they can ensure you feel at ease throughout the process.
Cardiac MRI (CMR)
A cardiac MRI (magnetic resonance imaging) is an advanced, non-invasive scan that uses a strong magnetic field and radio waves to create highly detailed images of your heart. This state-of-the-art imaging technique enables your cardiologist to examine the heart’s size, structure, and function with exceptional precision, providing a clear view of how well your heart muscle and valves are working.
Why is it performed?
A cardiac MRI helps diagnose and monitor a wide range of heart conditions. It can detect scarring following a heart attack, inflammation of the heart muscle (myocarditis), congenital (from birth) abnormalities, and heart valve problems.
It also allows for a detailed assessment of blood flow, the size of the heart chambers, and how effectively the heart is pumping.
Because cardiac MRI uses no radiation, it offers a safe and reliable way to monitor certain heart conditions over time. Your cardiologist may recommend this test if more detailed information is needed than can be obtained from other imaging techniques, such as an echocardiogram or CT scan.
What does the test involve?
During the scan, you’ll lie comfortably on a table that moves slowly into the MRI scanner — a tunnel-shaped machine. The test itself is painless, although it can be a little noisy; ear protection will be provided for your comfort.
In some cases, a small amount of contrast dye is injected into a vein to help highlight specific areas of the heart. You’ll be asked to remain still and hold your breath for short periods to ensure clear, high-quality images.
- Preparation & Positioning
You’ll lie comfortably on a table that slides into the MRI scanner — a tunnel-shaped machine. Ear protection is provided to reduce noise during the scan.
- During the Scan:
The procedure is painless and usually lasts 30–60 minutes. You may receive a small injection of contrast dye to enhance image clarity and will be asked to stay still and hold your breath briefly at times.
- Safety & Comfort:
After the test
Once the scan is complete, you can go home straight away and continue with your normal daily activities. Your results will be carefully analysed by one of our specialist cardiologists or radiologists.
These findings are typically available within a few days and will be discussed in detail during your follow-up appointment with your cardiologist. They will explain what the results mean for you and outline any further investigations or treatment if necessary.
