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Abstract #4867

Evaluation of Multi-Section Resistive Tapered Stripline (RTS) Lead Wires to Reduce SAR Near Implanted DBS Electrodes During MRI

Peter Serano 1,2 , Leonardo M. Angelone 3 , and Giorgio Bonmassar 1

1 Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 2 Electrical and Computer Engineering, University of Maryland, College Park, MD, United States, 3 U.S. Food and Drug Administration CDRH/OSEL/DP, Silver Spring, MD, United States

When performing MRI in patients with DBS implants, one of the major issues is the heating of tissue surrounding the implant due to radiofrequency (RF) pickup of the implant acting as an antenna. We present an extensive evaluation of the design parameters of a novel DBS lead for MRI based on Resistive Tapered Stripline (RTS) technology. Our results show this innovative high scattering technology can allow for up to a 40% decrease in tissue specific absorption rate (SAR) near the DBS electrode while maintaining low lead resistivity for continuous current injection.

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