Myocardial contractility indices based on strain imaging

Myocardial contractility indices based on strain imaging

Background The principal determinants of chronic left ventricular (LV) dysfunction are reduced myocardial contractility and afterload excess due to adverse LV remodeling. To determine the relative contribution of each to a given instance of LV dysfunction, reliable quantitative indices of both myocardial contractility and afterload are needed. At the LV chamber level, ventricular volume and LV ...

Myocardial strain: can we finally measure contractility?

The measurement of myocardial performance is of critical importance for the diagnosis and management of the patient with cardiac disease. Despite decades of investigation, the search for the optimal method to measure the contractile properties of the myocardium still continues. Extrapolations from experiments in isolated muscle preparations and the intact animal heart have resulted in invasive ...

myocardial strain and strain rate imaging: comparison between doppler derived strain imaging and speckle tracking echocardiography

myocardial deformation indices in patients with significant aortic regurgitation: a strain rate imaging study

conclusions our results demonstrated the ability of pw-tdi and s/sr modalities in detection of the early subclinical abnormalities in asymptomatic patients with significant chronic ar. results ar group had significantly increased lv end systolic and end diastolic volumes, interventricular septum and posterior wall thickness compared to controls. in ar, sm and em of septal wall, sm of lateral wa...

Left Ventricular Contractility Indices

CONTENTS 3.1 Scope ............................................................................................................. 68 3.2 Left Ventricular Shape Factor Based Contractility Index .................... 68 3.2.1 LV Model Geometry Development ............................................. 69 3.2.2 Determination of LV Model Wall Stress..................................... 70 3.2.3 Normal...