Sung Yun Lee

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OBJECTIVES We used virtual histology-intravascular ultrasound (VH-IVUS) to study the relationship between pre-percutaneous coronary intervention (PCI) coronary plaque characteristics and post-PCI cardiac troponin I (cTnI) elevation. BACKGROUND Percutaneous coronary intervention is often complicated by post-procedural myocardial necrosis as manifested by(More)
OBJECTIVES This study sought to determine whether computational modeling can be used to predict the functional outcome of coronary stenting by virtual stenting of ischemia-causing stenoses identified on the pre-treatment model. BACKGROUND Computed tomography (CT)-derived fractional flow reserve (FFR) is a novel noninvasive technology that can provide(More)
AIMS The anatomical criteria for the diagnosis of ischaemia referenced by fractional flow reserve (FFR) from non-invasive coronary computed tomographic angiography (CCTA), invasive coronary angiography (ICA), and intravascular ultrasound (IVUS) have not been evaluated contemporarily in a large-scale study. The aim of this study was to assess the diagnostic(More)
OBJECTIVES We evaluated the clinical significance of attenuated plaque (hypoechoic plaque with deep ultrasound attenuation). BACKGROUND Attenuated plaques are unusual intravascular ultrasound (IVUS) findings in patients with acute coronary syndrome (ACS). METHODS We reviewed clinical presentations and angiographic and pre-intervention IVUS findings in(More)
AIMS To evaluate the efficacy of high-dose atorvastatin on contrast-induced nephropathy (CIN) occurrence in patients with ST-elevation myocardial infarction undergoing primary angioplasty. METHODS We studied whether 80  mg atorvastatin loading and its subsequent use for 5 days (high-dose group) could prevent CIN as compared to those who received 10  mg(More)
OBJECTIVES This study sought to test whether the newly developed platinum chromium (PtCr)-based everolimus-eluting stent (EES) is noninferior to the cobalt chromium (CoCr)-based zotarolimus-eluting stent (ZES) in all-comers receiving percutaneous coronary intervention (PCI). BACKGROUND PtCr provides improved radial strength, conformability, and visibility(More)
BACKGROUND The optimal duration of dual antiplatelet therapy remains controversial. METHODS AND RESULTS Between December 2006 and March 2008, 823 patients were enrolled in a prospective multicenter registry for 3-month dual antiplatelet therapy (aspirin 100-200mg+clopidogrel 75 mg daily) followed by aspirin mono-therapy after zotarolimus-eluting stents(More)
BACKGROUND/AIMS Many prognostic models have been developed to help physicians make medical decisions on treating patients with pulmonary embolism. Among these models, the Pulmonary Embolism Severity Index (PESI) has been shown to be a successful risk stratification tool for patients with acute pulmonary embolism. The PESI, however, had not been applied to(More)
BACKGROUND The prognostic value of poststent fractional flow reserve (FFR) has not been clearly defined in patients with drug-eluting stent (DES) implantation. This study sought to evaluate the association between FFR and clinical outcomes after DES implantation with intravascular ultrasound (IVUS) assistance. METHODS A total of 115 lesions (107 patients)(More)
We sought to determine the outcome with undersized drug-eluting stents for percutaneous coronary intervention of saphenous vein graft lesions. Using intravascular ultrasound guidance, 209 saphenous vein graft lesions were treated with drug-eluting stents (153 sirolimus-eluting and 56 paclitaxel-eluting stents). The lesions were divided into 3 groups(More)