Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
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J Am Soc Echocardiogr · Aug 2011
Feasibility of single-beat full-volume capture real-time three-dimensional echocardiography and auto-contouring algorithm for quantification of left ventricular volume: validation with cardiac magnetic resonance imaging.
With recent developments in echocardiographic technology, a new system using real-time three-dimensional echocardiography (RT3DE) that allows single-beat acquisition of the entire volume of the left ventricle and incorporates algorithms for automated border detection has been introduced. Provided that these techniques are acceptably reliable, three-dimensional echocardiography may be much more useful for clinical practice. The aim of this study was to evaluate the feasibility and accuracy of left ventricular (LV) volume measurements by RT3DE using the single-beat full-volume capture technique. ⋯ RT3DE using single-beat full-volume capture is an easy and reliable technique to assess LV volume and systolic function in clinical practice. However, the image quality and low frame rate still limit its application for dilated left ventricles, and the automated volume analysis program needs more development to make it clinically efficacious.
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J Am Soc Echocardiogr · Aug 2011
Comparative StudyFeasibility of intraoperative three-dimensional transesophageal echocardiography in the evaluation of right ventricular volumes and function in patients undergoing cardiac surgery.
The aim of this study was to test the feasibility of the assessment of right ventricular (RV) volumes and function using real-time three-dimensional (3D) transesophageal echocardiographic (TEE) imaging in patients undergoing cardiac surgery. ⋯ Intraoperative 3D TEE assessment of RV volumes and function is feasible in patients with normal and dilated right ventricles, with good correlation between 3D transthoracic echocardiographic and TEE RV parameters. These measurements could improve the quantitative evaluation of RV function during cardiac surgery.
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J Am Soc Echocardiogr · Aug 2011
Carotid artery stiffness and diastolic function in subjects without known cardiovascular disease.
The aim of this study was to investigate the relationship between carotid artery stiffness and diastolic function in a cohort of subjects without known cardiovascular risk factors and/or overt cardiovascular disease. ⋯ In healthy subjects, changes in central carotid stiffness are in line with left ventricular diastolic function independently of age, sex, pulse pressure, and body mass index.
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J Am Soc Echocardiogr · Jul 2011
Comparative StudyReversible left ventricular regional non-uniformity quantified by speckle-tracking displacement and strain imaging in patients with acute pulmonary embolism.
The aim of this study was to investigate the impact of acute right ventricular pressure overload (RVPO) on left ventricular (LV) function and regional uniformity using speckle-tracking displacement and strain analyses in patients with acute pulmonary embolism (PE). ⋯ Acute RVPO induces reversal LV regional uniformities, which are closely associated with reduced LV function and abnormal geometry of the left ventricle, and radial LV wall motion coordination plays a key role in the short-term regulation of cardiac output in patients with acute PE.