2D/3D registration using only single-view fluoroscopy to guide cardiac ablation procedures: a feasibility study

Pascal Fallavollita

doi:10.1117/12.844020

23 February 2010 2D/3D registration using only single-view fluoroscopy to guide cardiac ablation procedures: a feasibility study

Pascal Fallavollita

Author Affiliations +

Proceedings Volume 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling; 76252Z (2010) https://doi.org/10.1117/12.844020
Event: SPIE Medical Imaging, 2010, San Diego, California, United States

Abstract

The CARTO XP is an electroanatomical cardiac mapping system that provides 3D color-coded maps of the electrical activity of the heart, however it is expensive and it can only use a single costly magnetic catheter for each patient intervention. Aim: To develop an affordable fluoroscopic navigation system that could shorten the duration of RF ablation procedures and increase its efficacy. Methodology: A 4-step filtering technique was implemented in order to project the tip electrode of an ablation catheter visible in single-view C-arm images in order to calculate its width. The width is directly proportional to the depth of the catheter. Results: For phantom experimentation, when displacing a 7- French catheter at 1cm intervals away from an X-ray source, the recovered depth using a single image was 2.05 ± 1.47 mm, whereas depth errors improved to 1.55 ± 1.30 mm when using an 8-French catheter. In clinic experimentation, twenty posterior and left lateral images of a catheter inside the left ventricle of a mongrel dog were acquired. The standard error of estimate for the recovered depth of the tip-electrode of the mapping catheter was 13.1 mm and 10.1 mm respectively for the posterior and lateral views. Conclusions: A filtering implementation using single-view C-arm images showed that it was possible to recover depth in phantom study and proved adequate in clinical experimentation based on isochronal map fusion results.

Citation Download Citation

Pascal Fallavollita "2D/3D registration using only single-view fluoroscopy to guide cardiac ablation procedures: a feasibility study", Proc. SPIE 7625, Medical Imaging 2010: Visualization, Image-Guided Procedures, and Modeling, 76252Z (23 February 2010); https://doi.org/10.1117/12.844020

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