Study On Influencing Factors Of Strain Imaging/Strain Rate Imaging In Long-axial Direction And Characteristics Of Strain Rate Of Normal Left Ventricular Posterior Wall In Short-axis Direction

Part I Investigation of Influencing factorsof Strain and Strain Rate Imaging of Left Ventricular Wall in Longitudinal DirectionObjective: To explore the influencing factors that may affect the reproducibility of left ventricular wall's strain imaging (SI) and strain rate imaging (SRI) measurements in the longitudinal direction.Materials and methods: The subjects consisted of 56 healthy volunteers, 33patients with coronary artery disease, and 10 patients with dilated cardiomyopathy. GE Vivid 7 ultrasound imaging system and a 1.5~4 MHz probe were applied to acquire 2-dimensional tissues Doppler imaging...