208 Fusion of MR-derived anatomical and late enhancement image data with ablation mapping for verification of lesion delivery for cardiac radio-frequency ablation

Introduction Cardiac arrhythmias, such as atrial fibrillation and atrial flutter, are now increasingly treated using minimally invasive catheter ablation techniques as part of electrophysiology studies (EPS). The ablation sites can be mapped using electro anatomical mapping systems (EAMS), but there is no gold standard for ablation mapping. The success rate is sometimes poor and often patients must undergo repeat ablations. To date, MRI has shown sufficient sensitivity to detect ablation lesions [1,2], however MRI data has not been compared to the ablation lesions as mapped using an EAMS. In this abstract, we present the first findings for comparing MRI and EAMS ablation mapping.