
Keywords: اکوکاردیوگرافی ردیابی دو بعدی; 2-D; Two-dimensional; CV; Coefficient of variation; ECG; Electrocardiography; ICC; Intra-class correlation coefficient; LAp4Ch; Left apical four-chamber; LV; Left ventricle; RP4Ch; Right parasternal four-chamber; ROI; Region of interest; SD; Standard devi