What should you know about MRI scan claustrophobia?

An MRI uses a strong magnetic field and radio waves to create images. You usually lie still while part of your body enters the scanner, and the machine makes repeated loud sounds. Feeling anxious, warm, or confined can happen even when you understand that staff are nearby and can hear you.

The examination can be stopped if you need assistance. Some centres have scanners with a wider opening or different design. Whether a calming medicine is suitable depends on your health, other medicines, travel arrangements, and the need for someone to accompany you afterwards.

Tell the booking team about claustrophobia rather than waiting until arrival. Ask about the scanner design, a practice visit, music, ventilation, a mirror, or a support person where available. Wear comfortable clothing without metal. If prescribed a sedative, follow the instructions and do not drive unless the clinician confirms it is safe.

During scanning, use the call button if panic, breathlessness, chest discomfort, or dizziness becomes intense. After a sedative, seek urgent help for unusual difficulty staying awake, slow or troubled breathing, fainting, or confusion. Do not leave alone if the clinical team has told you that supervision is needed.

Ask whether an alternative scanner is available, whether medication is appropriate, who can escort you, how the scan can be paused, and whether another test could answer the same clinical question.