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Figure 3 Mechanism of late lumen loss after stenting (n = 56) and DCA (n = 56) assessed by serial IVUS examination. Changes in stent CSA (+0.3 mm2) after stenting and vessel CSA (–0.4 mm2) after DCA were not remarkable. However, the increase in PA was significantly larger (3.1 vs. 1.1 mm2; p < 0.0001) in the stent arm than in the DCA arm, which accounted for the significantly larger reduction in lumen CSA (2.8 vs. 1.5 mm2; p = 0.004).
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