What should you know about inside a mri scanner?

You lie on a padded table that moves through a short, tunnel-shaped opening. The scanner makes loud knocking and tapping sounds as images are collected, so the team provides hearing protection. The technologist can speak with you and you usually have a call button. Staying still helps prevent blurred images; some sequences require you to hold your breath briefly.

MRI does not use ionising radiation. Depending on the question being investigated, a contrast medicine may be offered through a vein. This can help certain tissues or blood vessels stand out, but it is not needed for every scan.

Tell the imaging team about a pacemaker, implanted pump, metal fragments, surgical clips, hearing devices, pregnancy, kidney problems, allergies or previous contrast reactions. Remove metal objects and follow instructions about food, drink and medicines. Wear comfortable clothing without metal where possible. Practise slow breathing and use the call button if you feel distressed; the team can pause and explain the next step.

MRI Scanner explains the equipment, while MRI Scan and Breast MRI describe clinical uses. The scan itself does not tell you the diagnosis immediately; a radiologist reviews the images and sends a report to the requesting clinician.

Tell the technologist straight away about pain, burning, unusual warmth, dizziness, breathlessness, severe anxiety or a new sensation during the scan. After contrast, seek urgent help for breathing difficulty, facial swelling, fainting or a widespread rash. Report delayed concerns, including persistent vomiting or worsening symptoms, to a clinician.

Ask why MRI is recommended, whether contrast is planned, how long your appointment may take, whether you can listen to music, and when results will be discussed. Tell the team in advance if enclosed spaces are difficult for you.