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Proceedings Paper

Real-time motion-adjusted augmented fluoroscopy system for navigation during electrophysiology procedures
Author(s): Atilla P. Kiraly; Julien Barbot; Wen Wu; Terrence Chen; Alexander Brost; Martin Koch; Carolin Jakob; Tanja Kurzendorfer; Norbert Strobel
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Paper 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.

Paper Details

Date Published: 17 February 2012
PDF: 6 pages
Proc. SPIE 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling, 831626 (17 February 2012); doi: 10.1117/12.912298
Show Author Affiliations
Atilla P. Kiraly, Siemens Corporate Research (United States)
Julien Barbot, Siemens Corporate Research (United States)
Wen Wu, Siemens Corporate Research (United States)
Terrence Chen, Siemens Corporate Research (United States)
Alexander Brost, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Martin Koch, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)
Carolin Jakob, Siemens AG (Germany)
Tanja Kurzendorfer, Siemens AG (Germany)
Norbert Strobel, Siemens AG (Germany)

Published in SPIE Proceedings Vol. 8316:
Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling
David R. Holmes III; Kenneth H. Wong, Editor(s)

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