Estimation of regional displacement in myocardium muscle during heart cycle based on mathematical analysis of TDE images

摘要: Tissue Doppler echocardiography (TDE) method has been developed which permits quantification of intramural myocardial velocities by detection of consecutive phase or frequency shifts of the ultrasound signal arising from the myocardium. In clinic conventionally are measured peak velocities for diagnosis and discriminates of heart disease however there is no report of the absolute displacement variation of myocardium. The purpose of this research was a time integral assessment of TDE time-velocity profile images after converting image data to signal during mechanic phases of heart cycle as a new method for evaluation of absolute displacement of myocardium muscle based on numerical integral. We also used results of some integral function for evaluation of this method. For assessment of approximation of this method, we examined equal width of pixel steps for estimation of area under time …