Coronary angiography at initial presentation for elective coronary stent placement, and following representation with ST elevation myocardial infarction due to subacute stent thrombosis. Before (a and d) and after (b and e) initial percutaneous coronary intervention (PCI) with drug-eluting stents, at simultaneous stent thrombosis (c and f), and after revascularization with aspiration thrombectomy and balloon angioplasty (figures at right bottom coroner in c and f). White arrows indicate the target lesions where the initial PCI was performed, and black arrowheads indicate the lesions responsible for subacute stent thrombosis, respectively. RCA indicates right coronary artery, and LAD indicates left anterior descending artery.

Intravascular ultrasound (IVUS) after initial PCI and intracoronary optical coherence tomography (OCT) imaging of multivessel stent thrombosis. Upper panels: IVUS demonstrated good stent expansion and apposition to the vessel wall. Lower panels: Massive stent thrombosis was observed by intravascular OCT (representative axial images and longviews). The homogenous, low backscattering OCT signal of the thrombotic material is consistent with a white (platelet-rich) thrombus. Scale bars indicate 1 mm.