We analyzed data for patients undergoing PCI of intermediate coronary stenoses (defined as a percent diameter stenosis ��40% and ��70%). Patients were excluded if PCI was performed for a nonintermediate stenosis (n = 373,320), if they underwent diagnostic angiography only (n = 1,977), or if they underwent both FFR and IVUS (n = 778). We examined data starting from April 2009 when version 4 of the


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