组织同步成像和组织多普勒成像技术在评价左心室同步性中的应用  

The application of TDI and TSI in assessing left ventricular synchrony

作　　者：赵德霞[1] 丁连芹[1] 孙宇[1] 刘敏[1] 

机构地区：[1]大庆油田总医院超声心动室,黑龙江大庆163001

出　　处：《中国现代医生》2013年第5期50-51,54,共3页China Modern Doctor

摘　　要：目的找出33例左束支传导阻滞患者左心室不同步节段。方法应用组织多普勒(TDI)分别测量左心室心尖四腔、二腔及三腔切面的基底6个节段的主动脉瓣开放(AVO)至收缩速度达峰(S')间期,应用组织同步成像技术(TSI)帮助确定TDI曲线中的矫正S'的测量点,通过最短AVO-S'间期来确定不同步节段。结果某节段的延迟间期大于正常对照者延迟间期上线时,认为是不同步节段,与正常对照组比较,左束支传导阻滞的患者除了心尖节段外,其他节段存在广泛的不同步性,差异有统计学意义(P<0.05)。测量者本人及测量者间的变异率分别为7.0%和7.7%。结论应用TDI和TSI评价心脏的不同步性降低了测量者本人及测量者间的变异率,并且使心脏不同步性的评价变得更容易和可信。Objective To identify asynchronous segments in 33 left bundle branch block patients. Methods The time intervals from the onset of aortic valve opening to the peak systolic velocity were measured by tissue doppler imaging. TS1 helped to identify the correct S＇ measuring point in the TDI curves. Then identified the segment with the shortest AVO-S＂ interval. Results Segments were considered asynchronous when the delay was above the upper limit of normal delays derived from the control population. Except for the anterior wall,asynchrnny was significantly more prevalent in all other segments in LBBB patients compared to healthy eontrols.Intra and inter observer variability were 7.0% and 7.7%. Conclusion Combination of TDI and TSI improves intra and inter observer variability and allows easy and reli- able assessment of cardiac synchrony.

关 键 词：组织同步成像技术 组织多普勒技术 心脏不同步性 

分 类 号：R541.61[医药卫生—心血管疾病]