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Ultrasonic myocardial tissue characterization in patients with dilated cardiomyopathy: value in noninvasive assessment of myocardial fibrosis.
TLDR
Calibrated myocardial IB provides information about theMyocardial fibrosis that cannot be assessable with conventional echocardiographic parameters, and the magnitude of cyclic variation of IB are likely to reflect somewhat different acoustic properties of the myocardium. Expand
Endothelial dysfunction in the early stage of atherosclerosis precedes appearance of intimal lesions assessable with intravascular ultrasound.
TLDR
Impairment of the endothelium-dependent vasodilating response assessed with intravascular ultrasound in the in vivo vessel precedes the appearance of echographic atherosclerotic findings, and intrav vascular ultrasound, if used in combination with drug intervention to assess endothelial function, would provide even more accurate assessment of the vessels than conventional intraviological ultrasound alone. Expand
Analysis of transmural trend of myocardial integrated ultrasound backscatter for differentiation of hypertrophic cardiomyopathy and ventricular hypertrophy due to hypertension.
TLDR
Hypertrophic cardiomyopathy and ventricular hypertrophy due to hypertension can be differentiated on the basis of quantitative analysis of the transmural gradient in integrated backscatter. Expand
Doppler echocardiographic pulmonary venous flow-velocity pattern for assessment of the hemodynamic profile in acute congestive heart failure.
TLDR
Two primary sets of hemodynamic parameters, that is, left atrial pressure and cardiac output, can be estimated with Doppler pulmonary venous flow parameters in patients with acute CHF by using the transthoracic approach. Expand
Transthoracic Doppler echocardiographic measurements of pulmonary venous flow velocity patterns: comparison with transesophageal measurements.
TLDR
Transthoracic measurements of the pulmonary venous flow velocity pattern are feasible and accurate in patients and may be used to assess left ventricular function and hemodynamics as a substitute for transesophageal measurements. Expand
Dobutamine stress ultrasonic myocardial tissue characterization in patients with dilated cardiomyopathy.
TLDR
Dobutamine stress ultrasonic tissue characterization may detect mild dilated cardiomyopathy because normal acoustic properties are detectable at rest with myocardial integrated backscatter, and a combination of dobutamine Stress testing would provide more sensitive ultrasonic myocardium tissue characterization. Expand
Right atrial spontaneous echo contrast indicates a high incidence of perfusion defects in pulmonary scintigraphy in patients with atrial fibrillation
TLDR
The increased incidence of perfusion defects in pulmonary scintigraphy in patients with RA-SEC indicates that right atrial SEC may be a predictable factor at a high risk of PE. Expand
Importance of left ventricular minimal pressure as a determinant of transmitral flow velocity pattern in the presence of left ventricular systolic dysfunction.
TLDR
Preload dependency of the Doppler transmitral flow velocity pattern is hampered if an increase in left atrial pressure is due to left ventricular systolic dysfunction. Expand
Digital subtraction high-frame-rate echocardiography in detecting delayed onset of regional left ventricular relaxation in ischemic heart disease.
TLDR
Digital subtraction high-frame-rate echocardiography may be used to visualize regional LV relaxation abnormalities in patients with ischemic heart disease and the time interval from the second heart sound to the onset of the segmental outward motion of the LV wall is obtained, providing a noninvasive and accurate measure for assessing coronary involved regions. Expand
Influence of preload, afterload, and contractility on myocardial ultrasonic tissue characterization with integrated backscatter.
TLDR
Data indicated that the calibrated myocardial IB is independent of preload, afterload and contractility, and that the magnitude of cyclic variation in IB is influenced by contractility. Expand
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