Abstract #0207

Comparison between Multi-Contrast Late Enhancement Magnetic Resonance Imaging & Electroanatomical Voltage Mapping, for Ventricular Tachycardia Substrate Characterization, Using a Real-Time MR-Guided Electrophysiology System

Samuel O. Oduneye¹,², Labonny Biswas², Roey Flor², Sudip Ghate², Venkat Ramanan², Jennifer Barry², Graham A. Wright¹,²

¹Medical Biophysics, University Of Toronto, Toronto, Ontario, Canada; ²Imaging Research, Sunnybrook Research Institute, Toronto, Ontario, Canada

Integration of MRI-derived scar maps with electroanatomical mapping (EAM) has implications for catheter ablation of ventricular tachycardia and for targeting the scarred regions. The purpose of this study was to compare the potentially arrhythmogenic regions and characterize the relationship and morphology between chronic myocardial scar detectable by multi-contrast late enhancement (MCLE) MRI and EAM of endocardial substrate obtained with a real-time MR-guided electrophysiology system.