OBJECTIVES We report intravascular ultrasound (IVUS) findings after crush-stenting of bifurcation lesions. BACKGROUND Preliminary results with the crush-stent technique are encouraging; however, isolated reports suggest that restenosis at the side branch (SB) ostium continues to be a problem. METHODS Forty patients with bifurcation lesions underwent crush-stenting with the sirolimus-eluting...

This article introduces the application background and research overview of esophageal stent. The finite element models of two different forms of braided esophageal stent, such as cup-sphericalshaped and straight shaped, are created. Based on the configuration of material model selection and boundary condition, the stress and axial elongation of the stent with different wire numbers, different ...

Magnetic resonance imaging (MRI) visualization of metallic stent lumens is possible if the stent structure counteracts eddy currents in the lumen induced by the radio frequency magnetic field, B(1). To examine the effectiveness of various stent designs in counteracting eddy currents, we anchored eight copper stent models and 2 commercially available nickel-titanium alloy (Nitinol) stents in a g...

RATIONALE Stent fracture has received increased concern as it may be an important risk factor for late stent failure, intravascular ultrasound (IVUS) is always recommended to confirm the diagnosis of stent fracture. StentBoost can detect stent fractures more easily due to the enhanced stent strut visibility, compared with coronary angiography (CAG). Few cases were reported to compare the advant...

Coronary optical coherence tomography (OCT) has the potential to identify in-stent neoatherosclerosis, which is a possible risk factor for late acute coronary events after drug-eluting stent implantation. The purpose of this study was to investigate differences between mid-term and late in-stent restenosis after stent implantation by quantitative and semiautomated tissue property analysis using...

BACKGROUND The results of stent implantation for small coronary disease have been inconclusive. The purpose of the present study was to evaluate the factors in predicting the risk of angiographic restenosis after 2.5-mm stent implantation for small coronary arteries. METHODS AND RESULTS The study group comprised 134 consecutive patients who had a reference small coronary artery with diameter ...

Coronary stent loss is a rare but serious complication during interventional cardiology. This complication occurs not only in the intracoronary area but also in the extracoronary area, such as the aortic root or the left ventricle. An 83-year-old man with stable angina had a stent inserted into a heavy calcific left anterior descending artery. The stent was lost twice during the procedure. The ...

Endoscopic bilateral stenting using conventional metal stents is considered to be technically difficult in patients with malignant hilar bile duct obstruction because the second stent is not easily inserted through the cell of the first stent wall in the bile duct [1]. A variety of new self-expandable metal stents (SEMS) specially designed for stent-in-stent procedures to facilitate bilateral s...

OBJECTIVES We examined the influence of an initial "stent-like" result on long-term outcome in patients in the 1985-86 NHLBI PTCA Registry. BACKGROUND Stent use in selected patients is associated with improved angiographic and short-term clinical outcome; however, due to potential for in-stent restenosis and high costs of stents, there is interest in a strategy of more optimal dilatation to a...

OBJECTIVES The objective of the study was to assess noninferiority of the polymer-free sirolimus-eluting Yukon Choice stent (Translumina GmbH, Hechingen, Germany) compared with the polymer-based Taxus Liberté stent (Boston Scientific, Natick, Massachusetts) with regard to the primary endpoint, in-stent late lumen loss, at 9 months in patients with diabetes mellitus. BACKGROUND The Yukon Choic...