How to Prepare for Your MRI
Proper preparation ensures a safe, comfortable scan and high-quality images. Here's everything you need to know before your MRI appointment.
๐ Quick Preparation Checklist
- Confirm appointment time and location
- Gather documentation about any implants or medical devices
- Arrange transportation if receiving sedation
- Wear comfortable, metal-free clothing or plan to change into a gown
- Leave jewelry and valuables at home
- Follow any fasting instructions if provided
- Bring a list of current medications
- Inform staff of claustrophobia, allergies, or kidney problems
- Arrive 15-30 minutes early to complete paperwork
What to Wear
MRI-safe clothing contains no metal components that could interfere with the magnetic field or cause injury:
Recommended Clothing
- Comfortable pants with elastic waistband (no metal zippers, buttons, or rivets)
- T-shirt or sweatshirt without metallic print or thread
- Sports bra (no underwire) or go braless
- Slip-on shoes (easy to remove)
- Socks (the scanner room can be cool)
What to Avoid
- Jeans with metal rivets, buttons, or zippers
- Underwire bras
- Clothing with metallic threads, sequins, or glitter
- Athletic wear with metallic logos or reflective strips
- Belts with metal buckles
๐ก Can't Find MRI-Safe Clothes?
Don't worry โ the imaging center will provide a hospital gown if needed. Many patients prefer this option for simplicity. Just plan to arrive a few minutes earlier to change.
Items to Remove Before Scanning
The MRI's magnetic field is extraordinarily powerful โ strong enough to pull oxygen tanks across a room. Before entering the scan room, you must remove:
- All jewelry: Rings, earrings, necklaces, bracelets, watches, body piercings
- Hair accessories: Metal bobby pins, hair clips, barrettes
- Eyewear: Glasses (metal frames), some sunglasses
- Hearing devices: Hearing aids, cochlear implant external processors
- Dental items: Removable dentures, retainers with metal components
- Electronics: Cell phones, smart watches, fitness trackers
- Cards: Credit cards, hotel keys, transit cards (magnetic strips will be erased)
- Keys and coins: All metal objects from pockets
- Medications: Medication patches (some contain metal foil)
โ ๏ธ Critical Safety Warning
Never bring any metal object into the MRI room. The magnetic field is ALWAYS on, even when the scanner appears inactive. Metal objects can become dangerous projectiles or cause severe burns. Lockers are provided for your belongings.
Food, Drink, and Medications
General MRI Scans
For most MRI scans (brain, spine, joints, extremities):
- You may eat and drink normally before the exam
- Take your regular medications as prescribed
- Stay hydrated โ especially if receiving contrast
Abdominal and Pelvic MRI
For scans of the abdomen, liver, pancreas, or pelvis:
- You may be asked to fast for 4-6 hours before the scan
- Clear liquids (water) may be allowed up to 2 hours before
- Follow specific instructions provided by your imaging center
MRI with Contrast
If receiving gadolinium contrast:
- Fasting is generally not required unless also scanning the abdomen
- Drink plenty of water before and after to help flush the contrast
- You may need a blood test (eGFR) to check kidney function beforehand
- Inform staff of any previous contrast reactions
๐ก Breastfeeding and Contrast
The American College of Radiology states it is safe to continue breastfeeding after receiving gadolinium contrast. Less than 0.04% of the dose passes into breast milk. However, if you prefer, you may pump and discard milk for 12-24 hours after the scan.
Preparing for Claustrophobia
If you experience anxiety in enclosed spaces, proactive preparation can make a significant difference:
Before Your Appointment
- Tell your doctor โ They can prescribe mild sedation (like lorazepam or diazepam) to take before the scan
- Ask about open or wide-bore MRI โ These may be more comfortable options
- Visit the facility in advance โ Seeing the machine beforehand can reduce anxiety
- Practice relaxation techniques โ Deep breathing, visualization, or progressive muscle relaxation
- Consider meditation apps โ Practice beforehand so you can use techniques during the scan
Day of the Scan
- If prescribed sedation, take it as directed (usually 30-60 minutes before)
- Arrange for someone to drive you home if sedated
- Arrive with plenty of time so you're not rushed
- Bring a music playlist โ most facilities can play it through headphones
- Ask about having a support person in the room (they'll need to be screened for metal too)
Disclosing Implants and Medical Devices
Before your scan, you'll complete a detailed safety questionnaire. Be thorough and honest โ your safety depends on it.
Devices That May Be MRI-Compatible
Many modern implants are designed to be MRI-safe or MRI-conditional (safe under specific conditions). These include:
- Many newer pacemakers and defibrillators (MRI-conditional)
- Most orthopedic hardware (joint replacements, plates, screws)
- Most stents and heart valves
- Dental implants and fillings
- Some cochlear implants (under specific conditions)
Devices That May Prevent MRI
- Older pacemakers and defibrillators
- Certain brain aneurysm clips (especially older ones)
- Some cochlear implants
- Certain insulin pumps and drug infusion pumps
- Metal fragments in eyes (from grinding/welding)
- Some spinal cord stimulators
โ ๏ธ Bring Documentation
If you have any implanted device, bring the implant card or documentation showing the manufacturer, model number, and MRI compatibility status. This information is essential for the radiology team to determine if your scan can proceed safely.
Special Situations
Pregnancy
MRI does not use radiation and is generally considered safe during pregnancy when medically necessary. However:
- First trimester MRI is avoided if possible (out of caution)
- Gadolinium contrast is avoided during pregnancy unless absolutely necessary
- Always inform staff if you are or might be pregnant
Children
Young children may need sedation or general anesthesia to remain still during the scan. If your child is having an MRI:
- Follow fasting instructions carefully if sedation is planned
- Bring comfort items (stuffed animal without metal)
- Prepare them by explaining the machine and sounds in age-appropriate terms
- A parent may be able to stay in the room (after metal screening)
Kidney Disease
If you have reduced kidney function:
- Inform staff and your ordering doctor
- A blood test (eGFR/creatinine) may be required before contrast administration
- Contrast may be avoided or alternatives discussed
What to Bring
- Photo ID and insurance cards
- Referral or prescription from your doctor (if required)
- Previous imaging CDs/reports if relevant and not already on file
- Implant documentation (if applicable)
- List of current medications
- Reading material for the waiting room
- Comfortable socks (floors and scanner room may be cold)