| 斑点追踪成像技术评价梗死心肌和缺血心肌对左心室局部收缩功能的影响 |
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| 引用本文： | 覃琴,周青,邓倾,朱丽敏,郭瑞强.斑点追踪成像技术评价梗死心肌和缺血心肌对左心室局部收缩功能的影响[J].中华医学超声杂志,2011,8(2):58-61. |
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| 作者姓名： | 覃琴 周青 邓倾 朱丽敏 郭瑞强 |
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| 作者单位： | 1. 湖北恩施州中心医院功能科
2. 武汉大学人民医院超声科,武汉,445000 |
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| 摘 要： | 目的应用超声斑点追踪成像(STI)技术分析梗死心肌及缺血心肌节段心肌纵向、径向及周向的收缩期峰值应变及应变率,评价其对左心室局部心肌收缩功能的影响。方法 35例心肌梗死患者(梗死组)、25例心肌缺血患者(缺血组)和25例正常体检者(正常组),接受超声检查,采集左心室长轴观、心尖四腔观,心尖二腔观及左心室短轴观(二尖瓣环水平、乳头肌水平和心尖水平)二维灰阶图像,按左心室18节段划分法,分析各个切面观心肌节段的纵向、径向和周向收缩期峰值应变及应变率。结果心肌缺血组纵向收缩期峰值应变及应变率低于正常组(P<0.05),而径向收缩期峰值应变、应变率和周向收缩期峰值应变、应变率低于正常节段,但差异无统计学意义(P>0.05);心肌梗死组径向、周向、纵向应变及应变率均显著低于正常组节段(P<0.01),也较缺血组节段低(P<0.05)。结论超声斑点追踪成像技术能准确评价梗死心肌和缺血心肌局部运动异常,纵向应变及应变率反映心肌缺血较其他指标敏感。
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| 关 键 词： | 超声心动描记术 心肌梗死 心肌缺血 左心室局部收缩功能 |
Evaluation of regional left ventricular systolic dysfunction in patients with infarct and ischemia myocardial by speckle tracking imaging |
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| QIN Qin,ZHOU Qing,DENG Qing,ZHU Li-min,GUO Rui-qiang.Evaluation of regional left ventricular systolic dysfunction in patients with infarct and ischemia myocardial by speckle tracking imaging[J].Chinese Journal of Medical Ultrasound,2011,8(2):58-61. |
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| Authors: | QIN Qin ZHOU Qing DENG Qing ZHU Li-min GUO Rui-qiang |
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| Affiliation: | QIN Qin,ZHOU Qing,DENG Qing,ZHU Li-min,GUO Rui-qiang. Department of Ultrasound,The People Hospital of Wuhan University,Wuhan 430060,China |
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| Abstract: | Objective To assess the longitudinal,radial and circumferential systolic strain (LS,RS,CS) and strain rate (LSR,RSR,CSR) from regional myocardial in patients with myocardial infarction and ischemia by speckle tracking imaging(STI) and to evaluate regional left ventricular systolic dysfunction.Methods The high frame rate two-dimensional echocardiography were performed in the 30 patients of the myocardial infarction and 25 patients of the ischemia myocardial group and 25 healthy subjects. The longitudinal and... |
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| Keywords: | Echocardiography Myocardial infarctiont Myocardial ischemia Regional left ventricular systolic dysfunction |
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