Comparison evaluation of left ventricular segmental wall motion abnormalities by tissue tracking technology and coronary arteriongraphy

Objective To investigate the clinical application value of left ventricular segmental wall motion abnormalities evaluated by ultrasonic myocardial tissue tracking technology(TTI).Methods Forty-one healthy subjects and 60 CAD patients were examined by TTI technology.The left ventricular posterior septum,lateral,anterior,inferior wall,the former interval and systolic posterior wall displacement were detected and analyzed on the apical four chamber view,apical two-chamber view and apical left ventricular long-axis view.And the results were compared with coronary angiography and two-dimensional echocardiography,then the diagnostic accuracy of TTI technology in the diagnosis of segmental wall motion abnormalities was evaluated.Results The left ventricular wall segments abnormal displacement values was lower and their color-coded imaging and curve waveform were changed for patients witth coronary heart disease.The positive detection rate of coronary heart disease was 87.7% by TTI,and the positive detection rate of coronary heart disease was 68.0% by two-dimensional echocardiography,there was significant difference between the two methods(P 0.05).Conclusion TTI technology can qualitative and quantitative analyze left ventricular segmental wall motion abnormalities non-invasively,rapidly and objectively,it can improve the detection rate of segmental wall motion abnormalities obviously.