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Abstract #0486

Navigated DENSE Strain Imaging for Post RF-Ablation Lesion Assessment in Swine Left Atria: A Comparison with Delayed Enhancement

Ehud Jeruham Schmidt1, Maggie M. Fung2, Pelin Aksit3, GodtFred Holmvang4, Ting Song5, Sandeep M. Gupta6, Andre D'Avila7, Vivek Y. Reddy7, Stephan B. Danik8

1Radiology, Brigham and Womens Hospital, Boston, MA, USA; 2MRI, GE Healthcare, Waukesha, WI, USA; 3Radiology, Yale University, New Haven, CT, USA; 4Cardiology, Massachusetts General Hospital, Boston, MA, USA; 5Applied Science Laboratory, GE Healthcare, Bethesda, MD, USA; 6GE Global Research, Niskayuna, NY, USA; 7Cardiology, University of Miami, Miami, FL, USA; 8Heart Center, Massachusetts General Hospital, Boston, MA, USA

High-resolution navigated strain imaging is compared to high-resolution Myocardium Delayed Enhancement in the assessment of the completeness of RF ablation of the pulmonary-vein/left-atrial junction in swine models. It is shown that DENSE strain detects ablation as regions of low and disorganized strain, and ablation gaps as regions of organized strain. Strain imaging is a possible method for non-contrast visualization of ablation injury in the thin atrial wall.