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Abstract #1453

The transfer function for implanted wires when a second wire is near.

Peter R.S. Stijnman1, Janot P. Tokaya1, Cornelis A.T. van den Berg1, and Alexander J.E. Raaijmakers1

1Center for Image Sciences, UMC Utrecht, Utrecht, Netherlands

Lead wires of medical implants can pose a severe safety risk due to RF-induced heating. Risk assessment typically involves determination of the transfer function. This study shows that the transfer function may drastically change if a second wire is located close to the lead wire. An explorative simulation study has been performed investigating the impact of inter-wire spacing and wire length on the alteration of the transfer function by the second wire. Results reveal that in particular insulated wires may show very strong enhancements (>100%) in induced currents if a second wire is present.

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