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 Slochteren^4,5, 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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