What should you know about an MRI head scan?

The images can help clinicians assess the brain, nerves, blood vessels and surrounding soft tissues. A scan may be requested for symptoms such as persistent headaches, seizures, changes in movement or concerns found during another examination.

An image finding is not the same as a diagnosis. The report is interpreted alongside your symptoms, examination and other tests. If an area needs confirmation, a biopsy or further imaging may be considered; many causes of neurological symptoms are not cancer.

Tell the MRI team about pacemakers, implants, metal fragments, pregnancy, kidney problems and previous reactions to contrast. Remove jewellery, cards and other metal items. If enclosed spaces or loud sounds worry you, mention this before the scan so the team can discuss support.

You may need to keep your head still in a support while the scanner collects several image sequences. Follow instructions about eating, drinking and medicines, particularly if sedation or contrast is planned.

Get emergency help for sudden facial drooping, weakness on one side, trouble speaking, a seizure lasting longer than expected or a sudden severe headache. After contrast, seek urgent assistance for breathing difficulty, swelling or widespread hives.

Ask what part of the head will be examined, whether contrast is needed and when the report will be available. Ask how the result fits with your symptoms and whether another test, such as a biopsy, could be needed.