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Safety Definitions for MRI as Defined by International Standard
MR SAFE:
An item that poses no known hazards resulting from exposure to any MR
environment. MR SAFE items are composed of materials that are electrically
non-conductive, non-metallic, and non-magnetic.
MR CONDITIONAL:
An item with demonstrated safety in the MR environment within defined
conditions. At a minimum, address the conditions of the static magnetic field,
the switched gradient magnetic field and the radiofrequency fields. Additional
conditions, including specific configurations of the item, may be required.
Supplementary marking – additional information that, in association with
marking as "MR CONDITIONAL," states via additional language the conditions
in which an item can be used safely within the MR environment.
MR UNSAFE:
An item which poses unacceptable risks to the patient, medical staff or other
persons within the MR environment.
F2503
3
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