MRI – Mayo Clinic

Risks. Because MRI uses powerful magnets, the presence of metal in your body can be a safety hazard if attracted to the magnet. Even if not attracted to the magnet, metal objects can distort the MRI image. Before having an MRI, you’ll likely complete a questionnaire that includes whether you have metal or electronic devices in your body.. Unless the device you have is certified as MRI safe …

https://www.mayoclinic.org/tests-procedures/mri/about/pac-20384768