Are you scheduled for an MRI scan? Magnetic resonance imaging, or an MRI, can sound intimidating if you’ve never had one. But knowing what to expect can make your visit smooth and stress-free.
“An MRI exam uses magnetic fields and radio waves to take detailed pictures of the inside of your body,” said Michelle Brady, associate director of MRI at Banner Imaging. “It is used to get very clear images of soft tissue structures, like muscles, ligaments and organs.”
Unlike an X-ray or CT scan, an MRI doesn’t use ionizing radiation. “Many providers see it as a safer way to look inside the body,” Brady said.
Whether you’re a first-time patient or helping a loved one prepare for one, Brady walks us through what to expect before, during and after an MRI appointment.
Preparing for your MRI scan
There’s not much preparation needed for most MRI exams. But a few steps can help ensure your safety and comfort:
1. Review your medical history
Before your scan, your technologist will ask about your medical conditions and any implants, metal or devices in your body. This includes pacemakers, stents, joint replacements or surgical clips.
“Staff want to know about anything that might be in or on your body that you weren’t born with,” Brady said. “These items could interfere with the powerful magnets in the MRI machine and we want to ensure your safety.”
If you have a pacemaker or other implanted device, check our blog about MRI restrictions for guidance.
2. Clothing and metal
Remove all jewelry, glasses, hairpins, hearing aids, belts or other metal items. Even some clothing (like Lululemon leggings) contains metal fibers that can interfere with MRI scans. Most imaging centers provide a gown or scrubs for you to wear.
3. Anxiety and claustrophobia
If you feel nervous, talk with your provider before your MRI. “Patients who are anxious or claustrophobic may benefit from anti-anxiety medication or scheduling a wide-bore MRI,” Brady said.
Other comfort options include music, eye covers or relaxing scents.
4. Eat, drink and arrive early
For most scans, you can eat and take medications as usual. If your MRI involves contrast dyes, you may need to avoid food for about four hours. Plan to arrive early so you have time for paperwork and preparation.
Special considerations before having an MRI
Allergies or kidney issues with contrast dye
Sometimes, an MRI requires a contrast injection (commonly gadolinium-based contrast) to make certain tissues more visible. Reactions to MRI contrast are very rare and usually mild (rash, itchiness, flushing). If you’ve reacted before, let your health care team know.
In people with severe kidney disease, contrast can carry more risk. If you’re breastfeeding, most guidelines say it’s safe to continue. However, your health care team may advise discarding breast milk for 24 hours after contrast (depending on which agent is used).
Pregnancy
If you are pregnant (or might be), let your technician know. MRI without contrast is generally considered safe, especially after the first trimester. Over many years of use, no clear harm has been shown.
If contrast is needed, your health care team will discuss whether it is essential and use the lowest, safest dose.
Children
Children may need sedation depending on age and ability to lie still. Your health care team will explain how to prepare (e.g., fasting, comfort items) to keep your child safe and comfortable throughout.
Tattoos
Though rare, tattoos sometimes contain tiny metallic components that can heat slightly or cause discomfort. Let your technologist know.
Inside the MRI machine
When your appointment begins, you’ll lie on a padded table that slides into the MRI scanner.
What you’ll hear and feel
The MRI machine makes loud knocking or tapping sounds as it captures images. These are normal and relate to the magnet coils switching. You’ll receive ear protection and a call button to alert the technologist if you need assistance.
“Technologists will talk to you throughout the exam to help you feel comfortable,” Brady said. “Most MRI exams last around 45 minutes, depending on what area is being scanned.”
Staying calm and still
For clear MRI images, you must stay as still as possible. Even small movements can blur the results.
Use deep breathing, counting or visualization to help you relax. Sometimes you can pick out music to listen to during your scan.
Contrast dye
If contrast is used, the scan will be paused, an injection made and then further scanning will occur. You may feel a cool flush or brief warmth in your veins.
After your MRI exam
When your scan is complete, you can usually resume normal activities.
- Contrast dye considerations: If you receive contrast dye, drink plenty of water after your MRI to help your body flush it out.
- Sedation: If you were sedated during the scan to ease anxiety, make sure to secure a ride home. You may also want someone to stay with you until the effects wear off.
- Reviewing results: The images are sent to a radiologist who reviews them and shares findings with your provider.
“Most patients get results within a few days,” Brady said. “MRI gives your provider a detailed view of your soft tissues, which helps guide safe and effective care.”
Bottom line
Having an MRI doesn’t have to be scary. With a bit of preparation and support, your MRI appointment should go as calmly and smoothly as possible.
If you’re ready for your first MRI exam, trust Banner Imaging to guide you. Our MRI technologists are available to answer questions, help reduce anxiety and ensure your safety from start to finish.
Schedule an MRI appointment today.
