What should you know about a mobile MRI scanner?

MRI uses a strong magnetic field and radio waves to create detailed images; it does not use x-rays. A mobile unit may be installed in a specially designed vehicle or temporary clinical space. The equipment and imaging principles are comparable to those of a fixed MRI service, while the setting and appointment logistics differ.

The scan may examine the brain, spine, joints, abdomen, pelvis or breasts, depending on the unit and the clinical request. Some examinations use contrast medicine. The team will check for implanted devices, metal fragments, kidney problems, pregnancy and difficulty remaining still before scanning.

Follow the booking instructions about food, drink and medicines. Wear clothing without metal and remove jewellery, cards, hearing aids and electronic items before entering the scan area. Tell staff about implants, previous surgery, tattoos with metal pigment, allergies, kidney disease, pregnancy or claustrophobia.

During the scan you will hear loud knocking sounds and must keep the requested position. You can usually communicate with the technologist. Ask whether a support person, ear protection, calming plan or contrast preparation is available.

Tell the imaging team immediately if you feel trapped, dizzy, unwell or unable to remain still. After contrast, seek urgent help for trouble breathing, facial swelling or widespread hives. Contact the service about persistent pain, swelling or a new rash at an injection site.

Which body area will be scanned and will contrast be needed? Is the mobile unit suitable for my implant or body size? Do I need preparation or a kidney-function check? How long should I allow at the site, and when will the report reach the referring clinician?