Because radiation is not used, there is no risk of exposure to radiation during an MRI procedure. However, due to the use of the strong magnet, MRI cannot be performed on patients with: Implanted pacemakers. Intracranial aneurysm clips.

Is an MRI a lot of radiation?

No! Unlike X-ray, CT, and PET scans, MRIs do not use ionizing radiation and is considered a non-invasive procedure. Instead, MRIs use a strong magnetic field and radio waves to take pictures of your brain.

Is MRI radiation bad for you?

Is medical imaging safe? Again, MRI scans do not expose patients to ionizing radiation. The Food and Drug Administration states, “There are no known harmful side-effects associated with temporary exposure to the strong magnetic field used by MRI scanners.”