Gradient-heating · Clause 9

The imaging gradient dB/dt field induces eddy currents on conductive AIMD enclosures and other conductive internal surfaces such as battery components and circuit traces resulting in device heating. For AIMDs with extended leads (e.g. cardiac leads or neuromodulation leads) that do not contain planar conductive surfaces, there is no mechanism for MR-induced eddy current heating to occur in the leads. These leads do not require an evaluation of MR-induced eddy current heating.

— ISO/TS 10974:2018, Clause 9

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