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Figure 3 Box and whisker plot (median value and quartiles) of angiographic in-segment coronary stenosis (measured by quantitative coronary angiography [QCA]) for each of the four grades of multidectector computed tomography (MDCT) narrowing (definitions in section "Reconstruction and analysis of MDCT scans"). Group 4 MDCT narrowing identified 80% of patients with  60% QCA restenosis, while restenosis was excluded in all but one outlier with MDCT grade 1 (stents not assessable by MDCT [n = 5, 4.5%] are not included in the figure).
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