نتایج جستجو برای: proximal edge

تعداد نتایج: 180166  

2016
Nobuaki Kobayashi Gary S. Mintz Bernhard Witzenbichler D. Christopher Metzger Michael J. Rinaldi Peter L. Duffy Giora Weisz Thomas D. Stuckey R. Brodie Rupa Parvataneni Ajay J. Kirtane Akiko Maehara

The main mechanisms of percutaneous coronary intervention (PCI) with stent implantation are vessel expansion and plaque redistribution, and one of the major complications is dissection originating from the proximal or distal stent edge. Although angiographic criteria for a significant dissection have been published, the criteria for a significant intravascular ultrasound (IVUS)–detected stent e...

Journal: :Japanese heart journal 2004
Takayuki Yokoyama Katsumi Miyauchi Takeshi Kurata Hitoshi Sato Hiroyuki Daida

Restenosis after stent deployment remains a major clinical problem. Antioxidants have been proposed as a promising strategy against restenosis. We tested the antioxidant probucol for its efficacy against neointimal hyperplasia in porcine coronary arteries after stent implantation. Probucol was then tested in vivo in 8 coronary arteries of 4 pigs (1000 mg/day orally beginning 7 days before stent...

Journal: :Medical physics 2013
Abolfazl Mehranian Arman Rahmim Mohammad Reza Ay Fotis Kotasidis Habib Zaidi

PURPOSE In iterative positron emission tomography (PET) image reconstruction, the statistical variability of the PET data precorrected for random coincidences or acquired in sufficiently high count rates can be properly approximated by a Gaussian distribution, which can lead to a penalized weighted least-squares (PWLS) cost function. In this study, the authors propose a proximal preconditioned ...

Journal: :International Journal of Electrical and Computer Engineering (IJECE) 2018

Journal: :journal of teaching language skills 2015
ali akbar jafarpour azizullah mirzaei fatemeh zahra ehsani

central to vygotsky-inspired sociocultural theory (sct) is the notion of zpd seen by sla researchers as a useful framework within which l2 teaching and learning can take place. van lier (2004) argues that the zpd could be activated in diverse proximal contexts (pcs) and is not limited to the expert-novice scenario. . this study probed whether iranian efl learners' collaborative task performance...

Journal: :Journal of orthopaedic research : official publication of the Orthopaedic Research Society 2015
Keiichiro Oura Kunihiro Oka Yohei Kawanishi Kazuomi Sugamoto Hideki Yoshikawa Tsuyoshi Murase

To investigate the cause of rupture of the flexor pollicis longus (FPL) after volar plate fixation of distal radius fractures, previous studies have examined the shape of the distal radius in the sagittal plane or in the lateral view. However, there are no reports on the anatomical shape of the volar surface concavity of the distal radius in the axial plane. We hypothesized that this concavity ...

Journal: :European heart journal cardiovascular Imaging 2017
Daniel Saura Raluca Dulgheru Luis Caballero Anne Bernard Seisyou Kou Natalia Gonjilashvili George D Athanassopoulos Daniele Barone Monica Baroni Nuno Cardim Andreas Hagendorff Krasimira Hristova Teresa Lopez Gonzalo de la Morena Bogdan A Popescu Martin Penicka Tolga Ozyigit Jose David Rodrigo Carbonero Nico Van De Veire Ralph Stephan Von Bardeleben Dragos Vinereanu Jose Luis Zamorano Ann-Stephan Gori Bernard Cosyns Erwan Donal Gilbert Habib Karima Addetia Roberto M Lang Luigi P Badano Patrizio Lancellotti

AIMS To report normal reference ranges for echocardiographic dimensions of the proximal aorta obtained in a large group of healthy volunteers recruited using state-of-the-art cardiac ultrasound equipment, considering different measurement conventions, and taking into account gender, age, and body size of individuals. METHODS AND RESULTS A total of 704 (mean age: 46.0 ± 13.5 years) healthy vol...

Journal: :Revista espanola de cardiologia 2008
Héctor M García-García Nieves Gonzalo Shuzou Tanimoto Emanuele Meliga Peter de Jaegere Patrick W Serruys

INTRODUCTION AND OBJECTIVES At present, the effect of paclitaxel on tissue structure at the edges of Taxus(R) stents is unknown. The objective of this study was to investigate in vivo the temporal changes occurring at the edges of paclitaxel-eluting stents using intravascular ultrasound radiofrequency (IVUS-RF) data analysis. METHODS The study included 24 patients who had a total of 26 paclit...

Journal: :Circulation 2003
Pedro A Lemos Francesco Saia Jurgen M R Ligthart Chourmouzios A Arampatzis Georgios Sianos Kengo Tanabe Angela Hoye Muzaffer Degertekin Joost Daemen Eugene McFadden Sjoerd Hofma Pieter C Smits Pim de Feyter Willem J van der Giessen Ron T van Domburg Patrick W Serruys

BACKGROUND We describe the clinical and morphological patterns of restenosis after sirolimus-eluting stent (SES) implantation. METHODS AND RESULTS From 121 patients with coronary angiography obtained >30 days after SES implantation, restenosis (diameter stenosis >50%) was identified in 19 patients and 20 lesions (located at the proximal 5-mm segment in 30% or within the stent in 70%). Residua...

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