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Abstract #3956

T1-weighted DCE-MRI may be used to visualize different components of RF ablation injury in the myocardium

Sathya Vijayakumar 1,2 , Ravi Ranjan 2 , Nassir F Marrouche 2 , and Eugene G Kholmovski 2,3

1 Surgical Services Clinical Program, Intermountain Healthcare, Salt Lake City, Utah, United States, 2 CARMA Center, University of Utah, Salt Lake City, Utah, United States, 3 UCAIR, Radiology, University of Utah, Salt Lake City, Utah, United States

Radiofrequency (RF) ablation of the left ventricle (LV) and left atrium (LA) are clinically acceptable therapies for ventricular tachycardia (VT) and atrial fibrillation (AF) [1,2]. To the best of our knowledge, there is still a lack of good understanding of acute cardiac lesion physiology. It has been shown earlier that serial late gadolinium enhancement (LGE) imaging of immediately post-ablation atrial lesions can help differentiate between transient and permanent injuries based on time course of lesion enhancement [3]. However, the characterization of different tissue types immediately following an RF ablation procedure has never been addressed. In this work, we use the contrast kinetics of myocardial tissues to identify and differentiate between the various regions of ablated tissue.

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