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Abstract #4792

New Method to Quantify RF Induced Currents Inside Conductive Wires

Michiel R. van den Bosch1, Marinus A. Moerland1, Astrid L. van Lier1, Lambertus W. Bartels1, Jan J. Lagendijk1, Cornelis A. van den Berg1

1Department of Radiotherapy and Radiology, University Medical Center Utrecht, Utrecht, Netherlands

Resonant waves can occur along metallic wires used in MRI guided interventions. Since it is hard to state the exact resonant wire length, there is a need for a tool to monitor the tissue heating at the tip of a wire. In this study we have developed a new methodology to estimate the induced current from the B1+ distortion around the wire. With this method we are able to quantify the current profile on wires for resonant and non-resonant conditions. This creates a powerful instrument to investigate the resonance of RF waves along metallic wires used for MRI guided interventions.