How to Prepare for an MRI Scan: Simple Tips for Patients
An MRI appointment feels more significant than it probably needs to. The machine is large, the process unfamiliar, and the instructions — when they arrive — can feel incomplete. Most patients show up not entirely sure what they should have done differently, if anything.
The preparation is actually straightforward. A few specific things genuinely matter. Most of what people worry about doesn't.
Here's what you actually need to know before your scan.
Metal Screening — The Non-Negotiable
MRI uses powerful magnets. Anything ferromagnetic — meaning anything that responds to a magnetic field — becomes a problem inside the scanner room. This isn't optional or precautionary. It's the most important preparation step, and it needs to happen before you arrive, not at the facility door.
Go through your medical history carefully beforehand. Have you ever had surgery? Any implants — orthopaedic hardware, surgical clips, heart valves? A pacemaker or cardiac device of any kind? Cochlear implants? Any metal fragments from accidents or occupational exposure?
Most modern orthopaedic implants — hip replacements, knee hardware, spinal screws — are MRI-compatible. But compatibility needs to be confirmed, not assumed. If you have an implant of any kind, bring documentation from the surgeon or device manufacturer. The radiologist team will verify before the scan proceeds.
What to Leave at Home
Anything with metal that you can remove should be left at home or stored in a locker at the facility.
This includes jewellery — rings, earrings, necklaces, piercings. Watches. Hair accessories with metal components. Underwired bras. Belts with metal buckles. Glasses.
Credit cards, hearing aids, and electronic devices also shouldn't enter the scanner room — the magnetic field can damage them. Leave your phone in the locker.
Wear comfortable, loose clothing without metal components. If your clothing has zips or metal buttons near the area being scanned, you'll likely be given a hospital gown. Bringing appropriate clothing saves that step.
Fasting — When It Applies
Most MRI scans don't require fasting. A brain MRI, a knee scan, a spinal investigation — none of these typically have dietary restrictions attached.
The exception is abdominal or pelvic MRI, particularly when contrast is involved. For these, you'll usually be asked to avoid solid food for four to six hours before the scan. Your booking confirmation or the clinical team will specify — follow those instructions rather than assuming based on general guidance.
Plain water is almost always permitted regardless of the scan type.
Contrast Injection — What to Expect
Some MRI scans use gadolinium-based contrast — a dye injected into a vein that makes certain tissues, blood vessels, and abnormalities more visible on the images.
If contrast is part of your scan, you'll have a small cannula placed in your arm before entering the scanner — similar to a routine blood draw. The injection itself causes no significant sensation for most patients. Some notice a brief coolness at the injection site.
If you have kidney problems, you'll need recent kidney function test results before contrast is administered — gadolinium is cleared through the kidneys and requires adequate function. If you've had allergic reactions to contrast agents previously, mention it when booking.
Claustrophobia — Options Exist
The MRI scanner is a narrow tube. For patients with claustrophobia, this is a genuine concern — not something to push through silently.
Mention it when booking. Several options exist depending on severity: keeping eyes closed throughout, having a companion present in the room during setup, listening to music via MRI-compatible headphones, or a mild sedative prescribed by your doctor taken before arrival. Some facilities also have wider-bore scanners that reduce the enclosed feeling significantly.
Arriving without having mentioned claustrophobia and then struggling inside the scanner creates a difficult situation for everyone. Raise it early — the solutions are straightforward.
Booking the Right Package
MRI scans vary in what they cover depending on the clinical question. A brain MRI is a different protocol from a spine MRI or a knee MRI — and a comprehensive package often makes the combination more cost-effective than booking investigations individually.
Sarthi Lab's MRI scan packages cover a range of diagnostic indications with modern equipment and experienced radiologist reporting. For patients in west Jaipur, their MRI centre in Mansarovar provides accessible imaging with full preparation support. Central Jaipur patients can access the same standard through their Raja Park MRI facility — both locations minimising travel time without compromising on diagnostic quality.
Sarthi Lab provides pre-scan preparation guidance at the time of booking — so patients arrive knowing exactly what's required for their specific scan rather than piecing together instructions from general sources.
The Radiological Society of North America maintains detailed, clinically accurate patient guidance on MRI preparation across different scan types — a useful reference for anyone wanting scan-specific information before their appointment.
The Day of the Scan
Arrive a few minutes early. Bring any relevant prior imaging — previous MRI or CT scans of the same area — as these help the radiologist compare findings. Bring your prescription and any implant documentation.
Tell the radiographer if you feel anxious. Tell them if you feel unwell during the scan. The process can be paused if needed — you're not committed to lying motionless for 45 minutes without any ability to communicate.
The scan itself is painless. The preparation, done correctly, makes everything that follows straightforward.
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