Eugene G. Kholmovski1,2, Sathya Vijayakumar1,2, Chris McGann, 2,3, Nassir F. Marrouche, 2,3
1UCAIR, Department of Radiology, University of Utah, Salt Lake City, UT, United States; 2CARMA Center, University of Utah, Salt Lake City, UT, United States; 3Department of Cardiology, University of Utah, Salt Lake City, UT, United States
Imaging protocol has been developed for assessment of acute atrial injury caused by RF ablation by 3T MRI. The protocol has been optimized and applied to study 50 immediately post-ablation cases. The main observations are the following: 1. Significant edema was detected not only in the regions subjected to RF energy (pulmonary veins ostia, posterior wall, septum) but also in distant regions (anterior wall). 2. LGE images demonstrate heterogeneous appearance of LA wall in the regions subjected to RF energy. Significant areas of these regions has minimal enhancement.