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Assessment of Pulmonary Vein Anatomic Variability by Magnetic Resonance Imaging:

Introduction: Pulmonary vein (PV) isolation for atrial fibrillation (AF) currently is performed using either an ostial or an extra‐ostial approach. The objective of this study was to analyze by three‐dimensional (3D) magnetic resonance angiography (MRA) the anatomy of the PVs in order to detect structural variability that would impact the choice of ablation approach.