Lowell Chang1, Divya Verma1, Eugene Kholmovski2, Sathya Vijayakumar2, Nathan Burgon2, Nassir Marrouche1, Christopher McGann1
1Cardiology, University of Utah School of Medicine, Salt Lake City, UT, United States; 2Utah Center for Advanced Imaging Research, University of Utah School of Medicine, Salt Lake City, UT, United States
Serial cardiac MRI is a useful tool in the characterization of injury of pulmonary veins leading to pulmonary vein stenosis after radiofrequency ablation for atrial fibrillation. Acute edema/inflammation immediate post-ablation can be seen by T2-weighted imaging, while late gadolinium-enhanced imaging show remodeling leading to scar. Pulmonary vein stenosis is best predicted by MRA measurements of baseline pulmonary vein caliber and immediate post-ablation pulmonary vein narrowing.