Objective To investigate clinical value of quantitative tissue velocity imaging( QTVI) technique in the detection of regional wall motion abnormalities of left ventricle of patients with coronary heart disease. Methods QTVI technology was used to quantitatively analyze left ventricular of 102 cases who confirmed with coronary heart disease( single vascular stenosis > 75%) by selective coronary angiography( SCA). All patients were divided into group A( pathological vessel was left anterior descending artery)...