نتایج جستجو برای: strain rate imaging

تعداد نتایج: 1573666  

2007
Kyoung Im Cho Hyeon Gook Lee Hyun Jung Kim

Background and Objectives:Conservation of the normal atrial size and architecture by preventing the structural atrial remodeling that’s due to atrial fibrillation (AF) seems to be of prime importance for the management of AF patients. We attempted to assess the relevance of performing strain echocardiography for quantitatively assessing the left atrial (LA) status in AF patients. Subjects and M...

Journal: :international journal of iron & steel society of iran 2006
a. najafizadeh j. j. jonas

experiments were carried out in which the dependence of the fractional softening on temperature, time and strain rate was determined in a 304h stainless steel. three prestrain ranges were identified pertaining to three different post-deformation softening behaviors: 1) prestraining to below the drx critical strain: strongly strain dependent softening by srx alone with softening kinetics control...

2013
Ali Hosseinsabet

OBJECTIVES In this study, pulmonary artery longitudinal deformation was evaluated and attempted to clarify pulmonary artery deformation. METHODS Eight healthy men and seven healthy women with structurally normal hearts were enrolled. In the parasternal short axis view at the aortic valve level, longitudinal axis of pulmonary artery was obtained and color coded Doppler myocardial imaging appli...

Journal: :Circulation. Cardiovascular imaging 2008
Ola Gjesdal Thomas Helle-Valle Einar Hopp Ketil Lunde Trond Vartdal Svend Aakhus Hans-Jørgen Smith Halfdan Ihlen Thor Edvardsen

BACKGROUND The objective of the study was to evaluate the ability of established and new parameters of global systolic left ventricle function to estimate myocardial infarct size. Increasing infarct extent is associated with impaired prognosis in chronic ischemic heart disease. Systolic myocardial deformation is a complex 3D process that is mainly influenced by the amount and transmural distrib...

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