Despite the appeal of the MRI machine, given its sophisticated appearance and powerful abilities, it can be a source of harm to you if standard guidelines are not followed. The presence of a large magnet within the MRI bore makes it possible for it to attract ferromagnetic materials, displace or dislodge some items and many more.
We have added this portion to help you understand what the potential risks can be and how you can play a part in your own safety during your MRI scan.
Know the Signs!
The MRI Area is not a free pass zone. By this, we mean there are different areas, known as zones, with different levels of access. It is important for you to know that as a patient, certain zones (usually indicated by signs) should not be entered without express access and screening by the Radiographer so read the signs as often as you can.
Metal Objects and the Magnetic Field
The MRI machine has a strong magnetic field that can interact with metal objects. This is why you’ll need to remove all metal items, including jewelry, watches, and even small things like hairpins, before entering the MRI room. Any metal left on the body can move or heat up on your skin within the machine, potentially causing harm. The attending Radiographer will give you a safe place to store these items while you get your scan done.
Medical Implants and Devices
Certain medical devices—like pacemakers, aneurysm clips, cochlear implants, and some artificial joints—can be affected by the magnetic field. If you have any implants or metal in your body, let your referring doctor and the MRI team know.
Not all implants are MR Safe. Some are MR Conditional, meaning scanning is permitted only when every stated condition is met, such as scanner strength, body area, device settings, waiting period, and monitoring. Bring the implant card or the exact manufacturer and model whenever possible. A previous MRI without a problem does not prove that an unidentified implant is safe, and a device with unknown status should be treated as unsafe until checked.
Tell the team about pacemakers and defibrillators, aneurysm clips, cochlear implants, neurostimulators, programmable shunts, infusion pumps, glucose monitors, medication patches, bullets or shrapnel, and any past eye injury involving metal. Some devices can be scanned safely under a specialist protocol; others must be removed, reprogrammed, or investigated first.
Claustrophobia and Anxiety in MRI
MRI machines are mostly tube-shaped, and this enclosed space can make you feel anxious or claustrophobic. Don’t worry; you’re not alone in feeling this way. Communicate with your Radiographers to understand the options available to you.
Many units have an intercom system through which the Radiographer will be able to communicate with you at any time during the scan. In some cases, if you’re very anxious, a mild sedative can be given (after consulting your doctor).
Open MRI machines or wider-bore MRI options may also be available if you’re particularly concerned about tight spaces.
Noise and the MRI
The MRI machine is notoriously famous for making very loud noises. It could go from knocking sounds to grinding sounds sometimes. Don’t Fret! These are all part of how it works.
Loud noises above certain decibels are not good for the ears, particularly for kids. To minimize this, many MRI centers offer earplugs or headphones to block out noise, protect your ears, and help you relax.
Heating, Burns, and Unusual Sensations
Radiofrequency energy can heat tissue or conductive materials. Burns are among the most frequently reported MRI equipment-related patient problems. Change into approved clothing when asked, remove medication patches and metallic cosmetics when instructed, and do not allow bare skin to form tight loops or press against cables. Padding helps prevent skin-to-skin and skin-to-bore contact.
Tell the radiographer immediately if you feel burning, unusual heating, sharp pain, strong twitching, or tingling. Use the call device rather than trying to tolerate the sensation until the sequence ends.
I think I am Pregnant!
If you’re pregnant or think you might be, tell the referring clinician and MRI team. Noncontrast MRI may be performed when the expected medical benefit justifies it, including during the first trimester after an individual decision. Gadolinium is not routinely given during pregnancy and requires documented risk-benefit review when considered essential.
Be Honest About Your Health History
For every time you get an MRI, the MRI team will have you fill out a questionnaire covering your health history and any medical conditions. Answering these questions accurately helps the team make sure the scan is safe for you.
[!WARNING] Important: Ensure you don’t gloss over the details. Even seemingly small details, like past surgeries or minor implants, can make a difference in the MRI room, and can be potentially lifesaving!
Questions to ask your MRI team
- Have you confirmed the exact make, model, and MR conditions for every implant or device?
- What clothing, patches, cosmetics, monitors, hearing protection, and padding requirements apply?
- How do I stop the scan if I feel heating, burning, pain, twitching, or panic?