نتایج جستجو برای: coronary vessel

تعداد نتایج: 268718  

2011
Jinnan Wang Suzanne C. Gerretsen Jeffrey H. Maki Caroline Jaarsma M. Eline Kooi Daniel Herzka Baocheng Chu Vasily L.Yarnykh Chun Yuan Tim Leiner

BACKGROUND The aim of this study was to explore the feasibility and reproducibility of a time-efficient coronary vessel wall measurement approach using an improved motion-sensitized driven equilibrium (iMSDE) pulse sequence. METHODOLOGY In this study, the iMSDE pulse sequence was first optimized and then applied on a group of healthy volunteers (N = 10) to evaluate its feasibility of vessel w...

Journal: :Circulation 2007
Aamir Javaid Daniel H Steinberg Ashesh N Buch Paul J Corso Steven W Boyce Tina L Pinto Slottow Probal K Roy Peter Hill Teruo Okabe Rebecca Torguson Kimberly A Smith Zhenyi Xue Natalie Gevorkian William O Suddath Kenneth M Kent Lowell F Satler Augusto D Pichard Ron Waksman

BACKGROUND Advances in coronary artery bypass grafting (CABG) surgery and percutaneous coronary intervention (PCI) with drug-eluting stents have dramatically improved results of these procedures. The optimal treatment for patients with multivessel coronary artery disease is uncertain given the lack of prospective, randomized data reflecting current practice. This study represents a "real-world"...

2011
Andrew D Scott Jennifer Keegan Raad H Mohiaddin David N Firmin

Background Autopsy studies [1,2] and x-ray CT in older subjects with suspected disease [3] have demonstrated increasing coronary vessel thickness with age. There is, however, a need for a radiation-free non-invasive technique for use in longitudinal studies of coronary vessel wall morphology. Recently 3D MR coronary vessel wall imaging with retrospective beat-to-beat respiratorymotion-correctio...

2005
Michael V. Cohen Edward S. Kirk

Large proximal and smaller distal coronary arteries respond differently to pharmacologic agents, but the role of autoregulation is not known. We examined this role in dogs by cannulating the main left coronary artery and a distal left anterior descending artery branch. With coronary flow held constant, the distal coronary artery pressure and the gradient from proximal to distal artery were prop...

Journal: :the journal of tehran university heart center 0
ahmad sharafi tehran heart center, tehran university of medical sciences, tehran, iran. hamidreza pour-hosseini tehran heart center, tehran university of medical sciences, tehran, iran. arash jalali tehran heart center, tehran university of medical sciences, tehran, iran. mojtaba salarifar tehran heart center, tehran university of medical sciences, tehran, iran. ebrahim nematipour tehran heart center, tehran university of medical sciences, tehran, iran. mohsen shojanasab tehran heart center, tehran university of medical sciences, tehran, iran.

background: controversy persists over the potential benefits/harms of opium consumption in coronary heart disease. this study investigated the association between 12 months' major adverse cardiac events (mace) and pre-procedural opium consumption among patients undergoing percutaneous coronary intervention (pci). methods: retrospectively, 1545 consecutive men who underwent pci between 21 st   j...

Journal: :Circulation research 1973
M V Cohen E S Kirk

Large proximal and smaller distal coronary arteries respond differently to pharmacologic agents, but the role of autoregulation is not known. We examined this role in dogs by cannulating the main left coronary artery and a distal left anterior descending artery branch. With coronary flow held constant, the distal coronary artery pressure and the gradient from proximal to distal artery were prop...

Journal: :Circulation research 1976
G M Hutchins M M Miner J K Boitnott

Measurements were made of parent and branch vessel diameters and of the included angles of branch-points from postmortem human coronary arteriograms to determine the usefulness of theoretical equations predicting the relationships between parent and branch vessel caliber and between arterial caliber and branch-angle. The formulas were based on the concept that blood vessel size and arrangement ...

Journal: :Circulation. Cardiovascular interventions 2015
Andrew Ladwiniec Michael S Cunnington Jennifer Rossington Adam N Mather Albert Alahmar Richard M Oliver Sukhjinder S Nijjer Justin E Davies Simon Thackray Farquad Alamgir Angela Hoye

BACKGROUND The presence of a concomitant chronic total coronary occlusion (CTO) and a large collateral contribution might alter the fractional flow reserve (FFR) of an interrogated vessel, rendering the FFR unreliable at predicting ischemia should the CTO vessel be revascularized and potentially affecting the decision on optimal revascularization strategy. We tested the hypothesis that donor ve...

Journal: :Reviews in Cardiovascular Medicine 2023

Coronary bifurcation is defined by the European Bifurcation Consensus as a coronary artery stenosis adjacent to origin of significant side branch. Its anatomy composed 3 different segments: proximal main vessel, distal vessel and lesions are encountered in approximately 15–20% all percutaneous interventions constitute complex subgroup characterized lower procedural success rates higher adverse ...

Journal: :Singapore medical journal 2017
Annagrazia Cecere Graziano Riccioni Nicola Sforza Riccardo Marano Giuseppe Guglielmi

INTRODUCTION The primary endpoint of this study was to determine the prevalence of coronary artery disease (CAD) and coronary artery calcium score (CACS) using coronary computed tomography angiography (CCTA) among patients with polyvascular atherosclerosis (PVA). Secondary endpoints were to evaluate the prevalence of cardiovascular risk factors and determine the predictors of PVA. METHODS The...

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