速度向量成像技术评价正常人心肌运动协调性
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Assessment of myocardial synchrony in normal subjects by velocity vector imaging
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    目的:应用速度向量成像(VVI)技术评价正常人左室各室壁心肌节段运动在时间上的协调性。方法:采用Siemens公司生产的Sequoia 512 超声诊断仪及VVI技术对35例健康志愿者左室各节段收缩期达峰值速度、75%速度、50%速度的时间定量分析。结果:前间隔、后间隔和前壁的心尖段达50%速度时间均比同一室壁基底段和中间段迟,差异有显著性意义(P < 0.05)。左室短轴二尖瓣水平,下壁径向收缩达75%速度、50%速度时间迟于前间隔、前壁、侧壁,差异有显著性意义(P < 0.05)。结论:VVI技术能够无创、定量、准确和快速评价心肌运动的协调性。

    Abstract:

    Objective:To evaluate inter-ventricular myocardial synchrony in normal subjects by velocity vector imaging(VVI). Methods:Siemens Sequoia 512 equipment with 4V1c probe and VVI sofeware were used. Thirty-five subjects were enrolled in this study. Results:The fifty percent of time from R wave to peak of S wave in apical segments of anterior septum, inferior septum and anterior wall were all longer than those in basal and mid segments(P < 0.05). In parasternal short-axis view at level of mitral valve,there were significant differences in the seventy-five percent of time from R wave to peak of S wave among inferior wall, anterior wall, anterior septum and lateral wall,as well as in fifty percent of time from R wave to peak of S wave. Conclusion:It is important to maintain myocardial synchrony for the cardiac function. VVI can noninvasively, quantitatively, accurately and quickly assess myocardial synchrony.

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王璎瑛,许 迪,雍永宏,周 蕾,陈 莉,姚 静.速度向量成像技术评价正常人心肌运动协调性[J].南京医科大学学报(自然科学版),2007,(4):303-306

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  • 收稿日期:2006-09-05
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