Real-time motion-adjusted augmented fluoroscopy system for navigation during electrophysiology procedures

Atilla P. Kiraly; Julien Barbot; Wen Wu; Terrence Chen; Alexander Brost; Martin Koch; Carolin Jakob; Tanja Kurzendorfer; Norbert Strobel

doi:10.1117/12.912298

17 February 2012 Real-time motion-adjusted augmented fluoroscopy system for navigation during electrophysiology procedures

Atilla P. Kiraly, Julien Barbot, Wen Wu, Terrence Chen, Alexander Brost, Martin Koch, Carolin Jakob, Tanja Kurzendorfer, Norbert Strobel

Author Affiliations +

Proceedings Volume 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling; 831626 (2012) https://doi.org/10.1117/12.912298
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

Electrophysiology (EP) procedures are conducted by cardiac specialists to help diagnose and treat abnormal heart rhythms. Such procedures are conducted under mono-plane and bi-plane x-ray fluoroscopy guidance to allow the specialist to target ablation points within the heart. Ablations lesions are usually set by applying radio-frequency energy to endocardial tissue using catheters placed inside a patient's heart. Recently we have developed a system capable of overlaying information involving the heart and targeted ablation locations from pre-operational image data for additional assistance. Although useful, such information offers only approximate guidance due to heart beat and breathing motion. As a solution to this problem, we propose to make use of a 2D lasso catheter tracking method. We apply it to bi-plane fluoroscopy images to dynamically update fluoro overlays. The dynamic overlays are computed at 3.5 frames per second to offer real-time updates matching the heart motion. During the course of our experiments, we found an average 3-D error of 1.6 mm on average. We present the workflow and features of the motion-adjusted, augmented fluoroscopy system and demonstrate the dramatic improvement in the overlay quality provided by this approach.

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Atilla P. Kiraly, Julien Barbot, Wen Wu, Terrence Chen, Alexander Brost, Martin Koch, Carolin Jakob, Tanja Kurzendorfer, and Norbert Strobel "Real-time motion-adjusted augmented fluoroscopy system for navigation during electrophysiology procedures", Proc. SPIE 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling, 831626 (17 February 2012); https://doi.org/10.1117/12.912298

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KEYWORDS

Heart

Fluoroscopy

Navigation systems

3D modeling

Electrophysiology

3D image processing

Electrodes

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