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Icons used in the ASTM F2503‐20 standard for MR safety category labelling: (A) MR Safe, items that pose no known risk or hazard in the MRI environment; (B) MR Conditional, implants and devices demonstrate no hazard in the MRI environment, but only when prescribed conditions for safe use are adhered to; (C) MR Unsafe, implants and devices should never be brought into the MRI environment. 21
