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Abstract #0601

A method to assess the orientation of the maximum heating of an arbitrarily shaped object inside a homogeneous magnetic field

Umberto Zanovello1, Mario Chiampi1, Oriano Bottauscio1, Alessandro Arduino1, and Luca Zilberti1
1Istituto Nazionale di Ricerca Metrologica, Torino, Italy

Synopsis

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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