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. 2018 Nov 15;93(6):1059–1066. doi: 10.1002/ccd.27945

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© 2018 The Authors. Catheterization and Cardiovascular Interventions published by Wiley Periodicals, Inc.

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ 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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Perfusion defect size in myocardial segments before and after PCI of a CTO and a non‐CTO lesion. At baseline, the average perfusion defect size was significantly more comprehensive in the CTO group compared with the non‐CTO group. Percutaneous revascularization led to significant improvements with small residual perfusion defects in both groups as a result. Error bars display mean ± SEM. Corresponding values are mean ± SD. Abbreviations: CTO, chronic coronary total occlusion; FFR, fractional flow reserve; LCx, left circumflex coronary artery; MBF, myocardial blood flow; PCI, percutaneous coronary intervention; RCA, right coronary artery [Color figure can be viewed at wileyonlinelibrary.com]