Intravascular ultrasound cross-sectional arterial imaging before and after balloon angioplasty in vitro.
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چکیده
منابع مشابه
Intravascular ultrasound cross-sectional arterial imaging before and after balloon angioplasty in vitro.
A prototype ultrasound imaging catheter was evaluated in vitro using 17 human atherosclerotic artery segments before and after balloon dilatation angioplasty. The catheter was 1.2 mm in diameter and incorporated a single 20-MHz ultrasound transducer to obtain cross-sectional images of the arterial lumen. In 15 of the 17 (88%) arteries, high quality images were obtained, which demonstrated clear...
متن کاملIntravascular ultrasound predictors of outcome after peripheral balloon angioplasty.
OBJECTIVE This study investigates the potential role of intravascular ultrasound (IVUS) in the outcome in patients undergoing percutaneous transluminal angioplasty (PTA) of the superficial femoral artery. MATERIALS Angiographic and the qualitative and quantitative IVUS data obtained at the narrowest site derived from 39 patients before and after PTA were analysed. RESULTS Angiographically t...
متن کاملIntravascular ultrasound imaging before and after angioplasty for stenosis of arteriovenous fistulae in haemodialysis patients.
BACKGROUND Complications of haemodialysis vascular access have emerged as a major cause of patient morbidity. Intravascular ultrasound imaging is a new technical modality providing visualization of the vessel lumen and wall structure in a cross-sectional fashion. Percutaneous transluminal angioplasty has long been used in the treatment of stenoses of arteriovenous fistulae. However, there is no...
متن کاملInterobserver reproducibility of qualitative and quantitative analysis of intravascular ultrasound images before and after peripheral balloon angioplasty.
In this study, interobserver agreement on intravascular ultrasound data obtained before and after balloon angioplasty (PTA) of the superficial femoral artery was assessed. Two observers analyzed intravascular ultrasound cross-sections from 38 patients. Interobserver agreement was good for soft and hard lesions, dissection and vascular damage (kappa values 0.61, 0.67, 0.69 and 0.66, respectively...
متن کاملArterial response during cutting balloon angioplasty: a volumetric intravascular ultrasound study.
BACKGROUND AND PURPOSE Previous studies have demonstrated that the mechanism of acute lumen enlargement after balloon angioplasty is a combination of vessel expansion and plaque redistribution, but not plaque compression. The purpose of this study was to clarify, from a three-dimensional aspect, the vascular response to cutting balloon angioplasty. METHODS Serial intravascular ultrasound (IVU...
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ژورنال
عنوان ژورنال: Circulation
سال: 1989
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.80.4.873