Value of 3-dimensional speckle tracking imaging to quantify regional left ventricular function in patients with coronary artery disease

Objective To assess left ventricular (LV) strain by3-dimensional speckle tracking imaging (3D-STI) in patients with coronary heart disease (CHD) .Methods All subjects underwent invasive coronary angiography.2-dimensional and 3-dimensional echocardiography were performed in 52 subjects with suspected CHD.Longitudinal strain (LS) ,circumferential strain (CS) ,radial