If you're having an MRI scan for the first time, you may hear conflicting stories from friends, family, or online forums. Some of these are true, while others are common misconceptions that create unnecessary anxiety.
Here are the 10 most common MRI myths, paired with the medical facts you need to know before your appointment.
Myth 1: MRI Uses Radiation
Fact: MRI is 100% free of ionizing radiation.
Unlike X-rays and CT scans, an MRI scanner utilizes magnetic fields and harmless radio waves to create cross-sectional images of your body.
Myth 2: MRI Is Painful
Fact: MRI is completely painless and non-invasive.
You simply rest comfortably on a padded table. If contrast dye is prescribed, you may feel only a momentary pinch when the IV is placed.
Myth 3: MRI Is Unsafe
Fact: MRI is one of the safest medical imaging tests available.
Millions of MRI scans are safely performed worldwide every year under standardized safety protocols.
Myth 4: Anyone Can Enter the MRI Room Without Screening
Fact: Rigorous metal and implant screening is required for every patient.
Because of the high-field magnet, patients with certain cardiac pacemakers or unverified ferromagnetic implants must be screened prior to entry.
Myth 5: The Machine Touches Your Body During the Scan
Fact: The scanner never touches you.
You lie on a motorized table that slides smoothly into the open bore. The machine operates silently at a distance around you.
Myth 6: Loud Knocking Sounds Mean Something Is Broken
Fact: Acoustic noise is a normal sign of gradient coils switching on and off.
Rapid electrical pulsing in gradient coils creates acoustic vibrations. Earplugs or music headphones are provided for your comfort.
Myth 7: You Cannot Breathe Normally
Fact: You breathe normally throughout almost all scans.
Only certain specialized abdominal or cardiac MRI protocols require brief 10–15 second breath holds, guided clearly over the intercom.
Myth 8: Everyone Gets Claustrophobic Inside the Scanner
Fact: Most patients complete their scans with zero anxiety.
For those who feel nervous, modern wide-bore scanners, good ventilation, mirror headsets, and music provide substantial relief.
Myth 9: MRI Contrast Dye Is Dangerous
Fact: Gadolinium-based contrast is extremely safe and well-tolerated.
Radiologists review renal function (eGFR/Creatinine) and allergy history before administering contrast, ensuring maximum patient safety.
Myth 10: You Receive Your Diagnostic Results Instantly
Fact: A consultant radiologist must interpret hundreds of image slices carefully.
Formal diagnostic reports are typically compiled and delivered to your referring physician within 24 to 72 hours.