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Abstract #3844

Real-time Automatic Tip Tracking of Gadolinium-filled Balloon Wedge Catheter during MR-guided Cardiac Catheterization

Rohini Vidya Shankar1, Radhouene Neji1,2, Phuoc Duong1, Bram Ruijsink1, Kuberan Pushparajah1, Reza Razavi1, and S├ębastien Roujol1

1Biomedical Engineering Department, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom, 2MR Research Collaborations, Siemens Healthcare Limited, Frimley, United Kingdom

MRI-guided cardiac catheterisation procedures are commonly performed using balloon wedge catheters which are currently manually tracked. Furthermore, these procedures require frequent manual adjustment of the slice positioning during catheter navigation. In this study, we sought to develop a novel acquisition and reconstruction framework that enables automatic tracking of a gadolinium-filled balloon wedge catheter using (a) real-time partial saturation with increased spatial coverage, (b) automatic image-based estimation of the catheter balloon position, and (c) real-time slice tracking. The proposed framework is demonstrated during an MRI-guided cardiac catheterisation experiment in a 3D printed heart phantom.

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