MRI Scans

Magnetic Resonance Imaging (MRI) is a technique which produces extremely detailed pictures of your internal organs. MRI is only available in a few specialised units in the UK. Researchers are currently trying to find out which patients could benefit most from this new technology. 

What happens during an MRI?

You will need to lay down in a short tunnel around which there is a large magnet. Short bursts of magnetic fields and radio waves from the MRI scanner allow images to be created, processed and analysed. The whole test takes about an hour. An MRI does not cause any pain or discomfort, however if you have a fear of enclosed spaces (claustrophobic) you may find this type of scan difficult.

What can an MRI show?

An MRI is very good at showing the structure of your heart and blood vessels around it. It can also measure the flow of blood through the heart and some of the major arteries. An MRI may be helpful if it is suspected that you were born with an abnormality in the structure of your heart. This type of scan can also be useful when investigating conditions such as cardiomyopathy and coronary heart disease.

Is an MRI suitable for everyone?

An MRI is not suitable for you if you have a pacemaker or an implantable cardioverter defibrillator (ICD) because it can interfere with the way they work. It is also important to tell your doctor if you have any metal or other implants in your body such as metal pins or plates or ear implants.

For more information on MRI scans please see our booklet Test for Heart Conditions

Got any questions about this page?