A
magnetic resonance imaging (MRI) scanner has strong forces that can move an
internal ferromagnetic object (made of or having parts made of substances such
as iron, nickel, and cobalt), which can be magnetized by exposure to a magnetic
field. Further, the scanner can erase the memory or impair the function of a
medical device and turn a ferromagnetic object into a projectile that can
injure or kill. Because of this magnetic field and the associated
radiofrequency energy, providing MRI screening for patients and staff is
critical to their individual safety. Screening ensures that no ferromagnetic
objects or objects (in or on anyone) that conduct electricity enter the MR
scanning area.
