 Optical coherence tomography OCTis a high-resolution 10 μm, catheter-based imaging modality capable of investigating detailed coronary plaque morphology in vivo.This study aimed to observe that TCFA will arise what of the effect on intimal healing of stent struts on the lesions which fractional flow reserve FFR0.75 after EXCEL biodegradable polymer-coated sirolimus-eluting stent was implanted at 9 months follow up: evaluated by OCT and FFR 