Value of Doppler tissue imaging for ventricular wall motion of coronary artery disease

Objective To discuss the value of Doppler tissue imaging(DTI) in evaluating ventricular wall motion of coronary artery disease.Methods Totally 55 patients with diagnosed coronary heart disease and 31 normal patients were enrolled.The direction motion velocities of major and minor axis in the left ventricular wall were detected and the results were compared with those of conventional two-dimensional echocardiogram(2DE).Results The direction motion velocities of minor axis in abnormal segments were compared between the two groups,all indicators in coronary disease group were lower than those in normal patient group,except A wave in apex,posterior wall mitral orifice and infra-papillary muscle(P0.01).The systolic and diastolic velocities of major axis in abnormal segments were quicker in normal patient group than those in coronary disease group(P0.01).Conclusion DTI combined M-mode echocardiography with Doppler tissue imaging.It is a valuable imaging technique since it can not only appraise the integrated function of the heart but also analyze the velocity of partial ventricular wall's movement.