Safety During Your MRI

Precautions for magnetic resonance imaging

Because an MRI uses a powerful magnet to create images, it can attract metal objects and may interfere with the normal operation of implantable devices such as pacemakers. We do ask you to take the following precautions for your own personal safety during the procedure:

  • Wear comfortable, loose-fitting clothing without any metallic fasteners, which can interfere with imaging. In some cases, you may be asked to change into a hospital gown.
  • You will be asked to remove eyeglasses, jewelry, body piercings, hair clips, hearing aids or any removable dental work. You should empty your pockets of any coins or cards with scanner strips.
  • Any of the above mentioned items or other valuables should be left at home if possible or can be left in the changing suite.
  • Bring any identification cards on implanted pumps, electronic devices, nerve stimulators, aneurysm clips or drug infusion pumps to your appointment.

You may be asked some questions before the scan. It is important to inform the technologist if you have:

  • Had previous surgeries
  • Any allergies including those to contrast material
  • Artificial heart valves
  • Artificial limbs
  • A history of metal in the eyes
  • Metallic plates, pins, screws or other implants
  • Tattoos
  • An intrauterine device
  • A medication or transdermal patch
  • Aneurysm clips

MRI imaging is not known to cause risk to the developing fetus though there may be risks that are not known at this time. MRI contrast is known to cross the placenta and subsequent risks to the developing fetus are not known. If there is a possibility that you are pregnant, please notify your health care provider immediately.