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Repeat left atrial catheter ablation: cardiac magnetic resonance prediction of endocardial voltage and gaps in ablation lesion sets.
Circ Arrhythm Electrophysiol
April 2015
From the Division of Imaging Sciences & Biomedical Engineering, King's College London (J.L.H., C.S., N.W.L., R.K., S.E.W., K.S.R., J.G., C.A.R., M.W., T.S., R.S.R., M.D.O.), Department of Cardiology (J.L.H., N.W.L., S.E.W., J.G., M.C., C.A.R., M.W, M.D.O.), Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom.
Background: Studies have reported an inverse relationship between late gadolinium enhancement (LGE) cardiac magnetic resonance (CMR) signal intensity and left atrial (LA) endocardial voltage after LA ablation. However, there is controversy regarding the reproducibility of atrial LGE CMR and its ability to identify gaps in ablation lesions. Using systematic and objective techniques, this study examines the correlation between atrial CMR and endocardial voltage.
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