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Abstract #4970

Real-time Automatic Passive Catheter Tracking During MR-guided Cardiac Catheterization

Rohini Vidya Shankar1, Li Huang1, Radhouene Neji1,2, Grzegorz Kowalik1, Alexander Paul Neofytou1, Ronald Mooiweer1,2, Tracy Moon3, Nina Mellor3, Reza Razavi1, Kuberan Pushparajah1, and Sébastien Roujol1
1Biomedical Engineering, King's College London, London, United Kingdom, 2MR Research Collaborations, Siemens Healthcare Limited, Camberley, United Kingdom, 3Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom

Synopsis

Keywords: Heart, MR-Guided Interventions, Tracking, Real-timeMR-guided cardiac catheterization procedures currently employ passive tracking approaches to follow the gadolinium-filled catheter balloon during catheter navigation. This requires frequent manual tracking and repositioning of the imaging slice, especially when the catheter moves out-of-plane during the procedure. In this study, we developed a novel MRI guidance approach that enables automatic real-time tracking of the catheter balloon and repositioning of the imaging slice for continuous visualization of the balloon during catheter navigation. We first demonstrate the proposed approach in a phantom and subsequently present an initial evaluation in patients.

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Keywords