Abstract #5548

Non-contrast-enhanced imaging of RF ablation lesions in the heart

Michael A. Guttman¹, Susumu Tao¹, Aravindan Kolandaivelu¹, Sarah Fink¹, Henry Halperin¹, and Daniel A. Herzka²

¹Division of Cardiology, Johns Hopkins University, School of Medicine, Baltimore, MD, United States, ²Department of Biomedical Engineering, Johns Hopkins University, School of Medicine, Baltimore, MD, United States

Non-contrast-enhanced T1-weighted imaging has been demonstrated to be an effective technique for visualization of acute RF ablation lesions in the heart. Current practice does not include any soft tissue visualization, which could lead to gaps or incomplete ablations and possible recurrence of symptoms. We propose a T1-weighted sequence with long TI to increase contrast between normal and ablated myocardium. Images are presented demonstrating the technique after ablations in the ventricles, left atrium and pulmonary vein.

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