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Abstract #0366

Radiofrequency-Induced Heating of Broken, Damaged, and Abandoned Leads

Aiping Yao1, Tolga Goren1, Theodoros Samaras2, Niels Kuster1,3, and Wolfgang Kainz4
1IT'IS Foundation, Zurich, Switzerland, 2Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece, 3ITET, ETH Zurich, Zurich, Switzerland, 4FDA, Silver Spring, MD, United States

To demonstrate the potential enhanced heating of abandoned (capped), damaged, or broken leads, we estimated in-vitro the deposited lead-tip power for a generic active implantable medical device (AIMD), intact and with wire breaks at regular intervals. We studied break size, a cut and capped lead, and a second wire parallel to the broken wire. The deposited lead-tip power enhancement was up to 30-fold over the intact lead. The presence of a nearby intact, or even broken, wire reduced this enhancement factor to ~3-fold. This shows the risk of extending MR-conditional labeling to broken, damaged, abandoned, or cut AIMD leads.

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