Quantification of Left Ventricle Function in Stress Echocardiography Using Endocardial Area Centroid Trajectory

Coronary artery occlusion has a direct effect on cardiac activity and is a well-known reason forventricular motion disorder, specifically left ventricle (LV) wall motion dysfunction. In stress echocardiography,wall motion abnormality is exaggerated when stress is applied to the heart, and therefore,it is easier to diagnose abnormality in ventricular motion. In this study, we have presented a newparameter that measures LV function. We have shown that LV function can be measured using avariation of endocard borders during a cardiac cycle in standard stress echocardiography frames. Thisparameter shows a meaningful difference between ischemic and normal hearts and is calculated atdifferent heart rates (HRs). In conclusion, ischemic hearts cannot keep up with the required increase inactivity when reaching peak levels of stress.