Abstract
2100 Correlation of left atrial scar due to pulmonary vein ablation with recorded ablation sites
Highlights
Radiofrequency (RF) pulmonary vein (PV) ablation is a catheter-based treatment for atrial fibrillation
The scar generated by RF ablation [1] can be imaged using high spatial resolution delayed enhancement (DE) cardiovascular MR (CMR) [2]
We have developed a software tool using Kitware's Visual Toolkit (VTK) and Insight Segmentation and Registration Toolkit (ITK) to register and display the data
Summary
Radiofrequency (RF) pulmonary vein (PV) ablation ( known as PV isolation) is a catheter-based treatment for atrial fibrillation. The end-point of the RF ablation procedure at our institution is complete electrical block between the left atrium (LA) and the PV ostia. Some groups use an anatomically-guided ring of ablations around the PVs and LA as a surrogate end-point. The CARTOMERGE system(Biosense-Webster, Diamond Bar, CA) is used to create a 3D map of the surface of the LA and PVs during the procedures. The map is registered to previously acquired CT or MRI images and the resulting fused image is used to guide during the ablation procedure. Points representing the LA surface and each RF ablation are recorded into CARTO data files. In order to understand the relationship between the ablations performed and the scar pattern that results, we sought to develop a technique for fusing the CARTO data with the scar data from the MRI scan
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