【摘要】 目的探讨三平面基础上应用定量组织速度成像技术(QTVI)评价病毒性心肌炎(VMC)儿童左室内非同步运动的临床意义。方法正常儿童30例,VMC患者32例,每个受试者在实时三维成像的基础上获得标准的心尖四腔、两腔和三腔心切面,采集左心室6个壁的基底段、中间段、心尖段共18个位点的QTVI图像,测量各位点QRS波起点至收缩期峰值速度和舒张早期峰值速度的时限(Ts和Te),计算左心室同一个壁内3个节段间Ts最大差值和Te最大差值(Intra-ΔTsI、ntra-ΔTe)以及同一个节段内6个壁之间Ts最大差值和Te最大差值(Inter-ΔTsI、nter-ΔTe)以及左心室18个节段Ts最大差值和Te最大差值(Max-ΔTs、Max-ΔTe)。结果 VMC组Intra-ΔTsI、ntra-ΔTe、Inter-ΔTsI、nter-ΔTe、Max-ΔTs、Max-ΔTe均较正常组延长。结论 VMC患儿左室内存在明显的非同步运动。更多还原

【Abstract】 Objective To evaluate the clinical value of inner-ventricular asynchorny in the children with viral myocarditis(VMC)using Quantitative tissue Velocity Imaging(QTVI) and Real-Time Three-Dimensional Echocardial(RT-3DE).Methods 30 normal children and 32 children with VMC were studied on QTVI and RT-3DE.the regional velocity profiles in 18 segmentsof left ventricular at LV apical four-chamber and two-chamber views were obtained.The time from onset of QRS complexes to peak velocity during systole and early diastole(Ts and Te) were measured.The maximal difference in Ts and Te within the same wall(IntraΔTs and Intra-ΔTe) and the same segment(Inter-ΔTs and Inter-ΔTe) and all 18 segment max-ΔTs and max-ΔTe.Results Intra-ΔTs、Intra-ΔTe、 Inter-ΔTs、Inter-ΔTe、Max-ΔTs、Max-ΔTe in VMC group were significantly prolonged when compared with the control group.Conclusion the inner-ventricular asynchrony exists in children with VMC.更多还原