Measurement of instantaneous left ventricular dimension and filling rate in man, using echocardiography.

Measurement of instantaneous left ventricular dimension and filling rate in man, using echocardiography.

Measurement of Left Ventricular Myocardium Wall Instantaneous Motions with Echocardiographic Sequence Images

Background & Aims: One of the important aims of quantitative cardiac image processing is the clarification of myocardial motions in order to derive biomechanical behavior of the heart in the disease condition. In this study we presented a computerized analysis method for detecting the instantaneous myocardial changes by using 2D echocardiography images. Methods: The analysis was performed on th...

Measurement of peak rates of left ventricular wall movement in man. Comparison of echocardiography with angiography.

Estimates of peak systolic and diastolic rates of left ventricular wall movement were made in 23 patients by echocardiography and angiocardiography. Echocardiographic measurements were calculated as the rate of change of the transverse left ventricular dimension, derived continuously throughout the cardiac cycle. These were compared with similar plots of transverse left ventricular diameter, in...

Noninvasive estimation of the instantaneous first derivative of left ventricular pressure using continuous-wave Doppler echocardiography.

BACKGROUND The complete continuous-wave Doppler mitral regurgitant velocity curve should allow reconstruction of the ventriculoatrial (VA) pressure gradient from mitral valve closure to opening, including left ventricular (LV) isovolumic contraction, ejection, and isovolumic relaxation. Assuming that the left atrial pressure fluctuation is relatively minor in comparison with the corresponding L...

Echocardiography in the Measurement of Left Ventricular Wall Mass

THE purpose of this supplement is to define the current status and future applications of echocardiography in hypertension research. Electrocardiography has long been used in epidemiologic studies of hypertrophy and its regression." More recently, however, mounting evidence of the superior precision, reproducibility, sensitivity, and specificity of echocardiography as a noninvasive tool for mea...