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Abstract #2125

Robust and flexible real-time MRI-guided interventions using coRASOR-mediated passive device tracking

Peter Roland Seevinck1, Frank Zijlstra1, Jouke Smink2, Sascha Krueger3, Frebus Jan van Slochteren4,5, Steven A.J. Chamuleau4, Max A Viergever1, and Marinus Adriaan Moerland1

1Center for Image Sciences, University Medical Center Utrecht, Utrecht, Netherlands, 2Philips Healthcare, Best, Netherlands, 3Innovative Technologies, Philips Research Laboratories, Hamburg, Germany, 4Department of Cardiology, University Medical Center Utrecht, utrecht, Netherlands, 5ICIN, Utrecht, Netherlands

The Co-RASOR imaging technique for high temporal resolution passive device visualization was implemented in the interventional Suite software package. This facilitates MRI-guided device tracking by combining high temporal resolution color overlays on top of high spatial resolution 3D roadmaps. Titanium needles were accurately depicted in two orthogonal planes with 2.5Hz framerate, facilitating easy freehand needle targeting. The ability to adapt crucial Co-RASOR reconstruction parameters, including the off-resonance value, during the intervention was demonstrated to provide unprecedented flexibility and robustness in device visualization.

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