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. 2013 Dec 20;15(1):105. doi: 10.1186/1532-429X-15-105

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Copyright © 2013 Karim et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yale method’s threshold criterion. (a) Choice of threshold for pre-ablation (top) and post-ablation (bottom) images. Arrow points to fibrosis used for choosing threshold. Pre-ablation, this was a prominent section of the aortic valve. Post-ablation, the entire area of a prominent scar was selected. (b) The LA wall identification excludes regions where enhancement existed, but was attributed to artefacts or fibrosis of the mitral valve (MV), Aortic wall (AAo, DAo), or right atrial (RA) wall (arrows).