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. 2012 Aug 24;1(4):e001552. doi: 10.1161/JAHA.112.001552

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© 2012 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley-Blackwell.

This is an Open Access article under the terms of the Creative Commons Attribution Noncommercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Figure 3. — Endocardial and epicardial borders are drawn; then a large representative area of “normal myocardium” and a small area of “peak scar” are selected as shown in A. Software analysis identifies all voxels with signal intensity >2 standard deviations above “normal myocardium” mean intensity and voxels with signal intensity >50% of the “peak scar” are subtracted from this to obtain the PIZ. Identified voxels that are not in the region of an infarct are discarded.