MR safety of AIMD with leads is assessed test procedures defined in ISO/TS10974. This separates the different electromagnetic field interactions into independent test procedures. E.g., malfunction and rectification testing, with gradient and RF injection networks connected to the lead ports of AIMDs. But this does not correspond to "realistic MRI exposures", where a precise combination of RF and magnetic fields is used for imaging. For this reason, a concept is being proposed in which both injection networks are combined to allow a concerted exposure. This allows the simultaneous exposition of any gradient and RF signal combination.