Real-time circumferential mapping catheter tracking for motion compensation in atrial fibrillation ablation procedures

Alexander Brost; Felix Bourier; Andreas Wimmer; Martin Koch; Atilla Kiraly; Rui Liao; Klaus Kurzidim; Joachim Hornegger; Norbert Strobel

doi:10.1117/12.911338

17 February 2012 Real-time circumferential mapping catheter tracking for motion compensation in atrial fibrillation ablation procedures

Alexander Brost, Felix Bourier, Andreas Wimmer, Martin Koch, Atilla Kiraly, Rui Liao, Klaus Kurzidim, Joachim Hornegger, Norbert Strobel

Author Affiliations +

Proceedings Volume 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling; 83162V (2012) https://doi.org/10.1117/12.911338
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

Atrial fibrillation (AFib) has been identified as a major cause of stroke. Radiofrequency catheter ablation has become an increasingly important treatment option, especially when drug therapy fails. Navigation under X-ray can be enhanced by using augmented fluoroscopy. It renders overlay images from pre-operative 3-D data sets which are then fused with X-ray images to provide more details about the underlying soft-tissue anatomy. Unfortunately, these fluoroscopic overlay images are compromised by respiratory and cardiac motion. Various methods to deal with motion have been proposed. To meet clinical demands, they have to be fast. Methods providing a processing frame rate of 3 frames-per-second (fps) are considered suitable for interventional electrophysiology catheter procedures if an acquisition frame rate of 2 fps is used. Unfortunately, when working at a processing rate of 3 fps, the delay until the actual motion compensated image can be displayed is about 300 ms. More recent algorithms can achieve frame rates of up to 20 fps, which reduces the lag to 50 ms. By using a novel approach involving a 3-D catheter model, catheter segmentation and a distance transform, we can speed up motion compensation to 25 fps which results in a display delay of only 40 ms on a standard workstation for medical applications. Our method uses a constrained 2-D/3-D registration to perform catheter tracking, and it obtained a 2-D tracking error of 0.61 mm.

Citation Download Citation

Alexander Brost, Felix Bourier, Andreas Wimmer, Martin Koch, Atilla Kiraly, Rui Liao, Klaus Kurzidim, Joachim Hornegger, and Norbert Strobel "Real-time circumferential mapping catheter tracking for motion compensation in atrial fibrillation ablation procedures", Proc. SPIE 8316, Medical Imaging 2012: Image-Guided Procedures, Robotic Interventions, and Modeling, 83162V (17 February 2012); https://doi.org/10.1117/12.911338

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