Keywords: Safety, GradientsThe ISO/TS 10974 standard proposes a test method to assess the heating of a metallic AIMD due to switched gradient magnetic fields. Aiming at achieving a conservative evaluation, the standard suggests to evaluate the heating for the worst orientation of the AIMD inside a homogeneous harmonic magnetic field. The abstract presents a strategy to assess this orientation for an arbitrarily shaped metallic object. The strategy has been successfully tested numerically against expectations with a disk object and it has been applied to a realistic hip and knee implant.
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