Abstract #0912

Experimental System for RF-Heating Characterization of Medical Implants during MRI

Earl Zastrow^1,2, Myles Capstick^1,3, and Niels Kuster^1,2

¹IT'IS Foundation, Zurich, Switzerland, ²Department of Information Technology and Electrical Engineering, ETH-Zurich, Zurich, Switzerland, ³Zurich MedTech AG, Zurich, Switzerland

Patients with elongated conductive implants are generally excluded from MRI diagnostics because the interaction of the implant with MRI-induced RF fields can lead to hazardous localized heating in surrounding tissues. Depending on the complexity of the lead structure, numerical assessment of implant-RF interactions may require excessive computational overhead and may not be feasible. To overcome this challenge, an experimental system, based on the revised Tier 3 of the ISO/IEC TS 10974, is developed and validated with full-wave electromagnetics simulations. The experimental system is designed for the assessment of RF-induced heating of implants, irrespective of the complexity of the implant structure.

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