Real-Time Three-Dimensional Echocardiographic Assessment of Left Ventricular Regional Systolic Excursion in Children

Objective:To investigate the clinical value of real-time three-dimensional echocardiography(RT3DE) in assessment of left ventricular systolic excursion in children.Methods:Ten children with dilated cardiomyopathy(DCM) and 55 normal children were detected by full-volume RT3DE using Philips IE33 with the X7-2 matrix array 3D transducer.Post-processing software Qlab(version 5.1.2) was used for advanced analysis.The average excursion and average ball excursion of every segments of left ventricular(LV) can be automatically measured by RT3DE.Results:In control group,there were no significant differences in excursion and ball excursion between genders.The excursion of apical LV segment was smaller than that of middle and basal segments.The ball excursion of basal segments was larger than that of middle and apical segments.There was no statistical difference in excursion and ball excursion between ventricular septum and other segments.The ball excursion was significantly smaller in DCM group than that of the normal group.Conclusion:Ball excursion can be used to assess the systolic function of all the segments of left ventricle.RT3DE is a feasible and accurate method for analysis left ventricular systolic function in children.