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Model-based registration for motion compensation during EP ablation procedures

Brost A, Liao R, Hornegger J, Strobel N (2010)

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Publication Type: Authored book, Volume of book series

Publication year: 2010

Journal

Original Authors: Brost A., Liao R., Hornegger J., Strobel N.

Publisher: Springer-verlag

City/Town: Heidelberg, Berlin

Book Volume: 6204

Pages Range: 234-245

Event location: Lubeck

Journal Issue: null

DOI: 10.1007/978-3-642-14366-3_21

Abstract

Radio-frequency catheter ablation (RFCA) has become an accepted treatment option for atrial fibrillation (Afib). RFCA of Afib involves isolation of the pulmonary veins under X-ray guidance. For easier navigation, two-dimensional X-ray imaging may take advantage of overlay images derived from static pre-operative 3-D data set to add anatomical details which, otherwise, would not be visible under X-ray. Unfortunately, respiratory and cardiac motion may impair the utility of static overlay images for catheter navigation. We developed a system for image-based 2-D motion estimation and compensation as a solution to this problem. It is based on 2-D catheter tracking facilitated by model-based registration of an ellipse-shaped model to fluorosocpic images. A mono-plane or a bi-plane X-ray C-arm system can be used. In the first step of the method, a 2-D model of the catheter device is computed. Respiratory and cardiac motion at the site of ablation is then estimated by tracking the catheter device in fluoroscopic images. The cost function of the registration step is based on the average distance of the model to the segmented circumferential mapping catheter using a distance map. In our experiments, the circumferential catheter was successfully tracked in 688 fluoroscopic images with an average 2-D tracking error of 0.59 mm ± 0.25 mm. Our presented method achieves a tracking rate of 10 frames-per-second. © 2010 Springer-Verlag Berlin Heidelberg.

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How to cite

APA:

Brost, A., Liao, R., Hornegger, J., & Strobel, N. (2010). Model-based registration for motion compensation during EP ablation procedures. Heidelberg, Berlin: Springer-verlag.

MLA:

Brost, Alexander, et al. Model-based registration for motion compensation during EP ablation procedures. Heidelberg, Berlin: Springer-verlag, 2010.

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