Abstract #1566

In-vivo comparison of Active Tracking based cardiac triggering and ECG-triggering for cardiac MR-thermometry

Ronald Mooiweer^1,2, Rainer Schneider³, Axel Joachim Krafft³, Katy Empanger⁴, Jason Stroup⁴, Alexander Paul Neofytou¹, Rahul K Mukherjee¹, Steven Williams^1,5, Tom Lloyd⁴, Mark O'Neill¹, Reza Razavi¹, Tobias Schaeffter⁶, Radhouene Neji^1,2, and Sébastien Roujol¹

¹School of Biomedical Engineering and Imaging Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom, ²MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom, ³Siemens Healthcare GmbH, Erlangen, Germany, ⁴Imricor Medical Systems, Burnsville, MN, United States, ⁵University of Edinburgh, Edinburgh, United Kingdom, ⁶Physikalisch-Technische Bundesanstalt (PTB), Braunschweig and Berlin, Germany

Synopsis

Continuous AT was used for cardiac synchronization of MR-thermometry with on-line signal filtering, calibration, and triggering. Experiments in a porcine animal model, where AT-trig was compared to ECG triggering, showed that AT-trig could potentially serve as alternative cardiac triggering strategy in situations where ECG triggering is not effective.

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