MRI

What is an MRI scan?

An MRI scan uses magnetic and radio waves to take pictures of almost all the tissues in the body. An MRI scan is also able to provide clear pictures of parts of the body that are surrounded by bone tissue, so the technique is useful when examining the brain and spinal cord, because of the level of detailed pictures which is now favoured in the diagnosis of multiple issues in identifying suspicious pathology.

Is an MRI scan dangerous?

There are no known dangers or side effects connected to an MRI scan. The test is not painful; you cannot feel it. Since radiation is not used, the procedure can be repeated without problems. There is a small theoretical risk to the foetus in the first 12 weeks of pregnancy, and therefore scans are not performed on pregnant women during this time.

Because patients have to lie inside a large cylinder while the scans are being made some people get claustrophobic during the test. Patients who are afraid that this might happen should talk to the doctor beforehand, who may give them some medication to help them relax. MRI is very loud so to help reduce the noise, ear plugs or ear defenders are used.

How should I prepare for an MRI scan?

It is important not to wear jewellery or any other metal objects for the MRI scan as you are exposed to a powerful magnetic field.

It is also important for the patient to inform medical staff if they use electrical appliances, such as a hearing aid or pacemaker. There is no need for fasting before the scan.

Women should always inform their doctor if there is any possibility that they are pregnant.