三种超声斑点追踪技术评价正常人左心室心肌应变

发布时间：2018-07-13 17:28

【摘要】：目的探讨三种超声斑点追踪成像(STI)技术[包括二维STI(2D-STI)、三平面STI(3P-STI)及四维应变(4Dstrain)]评价健康成人左心室心肌应变的价值。方法采用2D-STI、3P-STI及4D-strain技术对141名健康成人行心肌运动分析,测量左心室整体及各节段的纵向、圆周、径向及面积应变,比较3种方法所测指标的差异及相关性。结果 2DSTI和3P-STI的整体纵向应变(GLS)及同一水平各节段纵向峰值应变(LS)比较差异无统计学意义(P0.05),但均高于4D-strain(P0.05)。2D-STI在同一水平前间隔及后间隔圆周峰值应变(CS)高于4D-strain,其余各节段均低于4Dstrain,而在同一水平各节段径向峰值应变(RS)均低于4D-strain(P均0.05)。不同水平及同一水平不同节段面积应变(AS)比较,差异均无统计学意义(P0.05)。4D-strain存储图像和分析图像所用时间短于2D-STI(P0.05)。2D-GLS与3P-GLS和4D-GLS有相关性(r=0.718,P0.001;r=0.397,P=0.006)。三种方法观察者间和观察者内一致性均较好。结论 2D-STI和3P-STI技术获得LS具有较好的一致性。4D-strain是一种评价左心室心肌纵向、圆周、径向和面积应变的新方法,具有快捷、全面、重复性好的优点,对定量评价室壁运动具有很好的临床应用价值。
[Abstract]:Objective to evaluate the value of three ultrasound speckle tracing imaging (STI) techniques [2D STI (2D-STI), 3P-STI (3P-STI) and 4D strain] in evaluating left ventricular strain in healthy adults. Methods using 2D-STI3P-STI and 4D-strain techniques, the myocardial motion of 141 healthy adults was analyzed. The longitudinal, circumferential, radial and area strains of the whole and each segment of the left ventricle were measured, and the differences and correlations of the indexes measured by the three methods were compared. Results the global longitudinal strain (GLS) and the longitudinal peak strain (LS) of 2DSTI and 3P-STI were not significantly different from those of the same level (P0.05), but were higher than 4D-strain (P0.05). 2D-STI was higher than 4D-strain (CS) at the same level. The peak radial strain (RS) was lower than 4D-strain at the same level (P 0.05). There was no significant difference in area strain (as) between different levels and the same level (P0.05). 4D-strain was significantly shorter than 2D-STI (P0.05). 2D-GLS was correlated with 3P-GLS and 4D-GLS (r = 0.718 / P 0.001 / 0.397P0.006). The three methods have good consistency among observers and within observers. Conclusion 2D-STI and 3P-STI techniques for obtaining LS have good consistency. 4D-strain is a new method for evaluating the longitudinal, circumferential, radial and area strain of left ventricular myocardium, and has the advantages of rapidity, comprehensiveness and reproducibility. It has good clinical application value for quantitative evaluation of ventricular wall motion.
【作者单位】：中国人民解放军第161医院特诊科;
【分类号】：R445.1

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