Table of Contents Author Guidelines Submit a Manuscript
International Journal of Biomedical Imaging
Volume 2010, Article ID 631264, 13 pages
http://dx.doi.org/10.1155/2010/631264
Research Article

Is Single-View Fluoroscopy Sufficient in Guiding Cardiac Ablation Procedures?

School of Computing, 557 Goodwin Hall, Queen's University, Kingston, ON, Canada K7L 3N6

Received 27 July 2009; Revised 13 November 2009; Accepted 18 January 2010

Academic Editor: Jiang Hsieh

Copyright © 2010 Pascal Fallavollita. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The CARTO XP ablation system provides real-time data on 3D, color-coded maps of the electrical activity of the heart; however, it is expensive and can only use a dedicated costly magnetic catheter per patient intervention. The purpose of our study is to shorten the duration of the radiofrequency ablation procedure and increase its efficacy by developing an affordable prototype catheter navigation system that simulates the CARTO system. To obtain 3D geometrical data from catheter locations inside the heart chamber, we acquired only single-view images using an Integris Allura fluoroscope and estimated the depth of the mapping electrode using pattern recognition techniques. Validation was performed in ideal and clinical conditions. For phantom experiment, when using a 7-French catheter, the average recovered depth error was  mm using a single image. However, when using the 8-French catheter, the average recovered depth error was  mm. In clinical experimentation, the standard error of estimate for the estimated depth was about 13.1 mm and 10.1 mm, respectively, for the posterior and lateral views. In conclusion, this paper describes our achievements and shortfalls in developing an affordable fluoroscopic navigation system to guide RF catheter ablation of cardiac arrhythmias.