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Abstract #0728

Parallel transmission medical implant safety testbed: First application using time-domain E-field probes to measure and mitigate RF induced currents

Lukas Winter1, Frank Seifert1, Werner Hoffmann1, Harald Pfeiffer1, Sandy Szermer1, Frank Wojcik1, Reiner Seemann1, and Bernd Ittermann1

1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany

A parallel transmission (pTx) implant safety testbed has been developed, that allows to investigate manifold MR safety related scenarios. The testbed can be used to investigate sensor-feedback methods, perform validation measurements of MR based current detection methods and investigate the MR safety of a variety of implants for various clinical MR settings from 1.5T to 7T. Preliminary results were acquired using a time-domain E-field probe to measure RF induced currents on a guidewire substitute at f=297 MHz and to mitigate these currents with pTx pulses.

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