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Auxiliary PTx system for active control of induced RF currents in conductive guidewires

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract

Original languageEnglish
Title of host publication Proceedings of the International Society of Magnetic Resonance in Medicine
PublisherInternational Society for Magnetic Resonance in Medicine
Publication statusPublished - 2019

King's Authors


The risk of RF-induced currents makes use of electrically conductive guidewires for cardiac catheterization procedures potentially unsafe for MRI. By using a parallel transmit coil array (PTx) system it is possible to generate RF field modes that can be utilized for safe imaging, and also guidewire visualization. As the induced RF currents can change with the guidewire position and operator handling, the control modes become a moving target. In this work we present an actively controlled PTx system that enables safe operation during a procedure in which electrical conditions are changing, and demonstrate this experimentally.

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