| 廖桂英,温赐祥.定量组织速度成像评价心肌梗死患者左心室舒张不同步性及整体舒张功能[J].中国医学影像技术,2008,24(s1):90~94 |
| 定量组织速度成像评价心肌梗死患者左心室舒张不同步性及整体舒张功能 |
| Quantitative tissue velocity imaging on left ventricular diastole asynchrony in patients with myocardial infarction |
| 投稿时间：2008-02-17 修订日期：2008-07-30 |
| DOI： |
| 中文关键词: 定量组织速度成像 心肌梗死 心室功能,左 |
| 英文关键词:Quantitative tissue velocity imaging Myocardial infarction Ventricular function, left |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨应用定量组织速度成像技术(QTVI)评价心肌梗死患者左心室非同步舒张运动的意义。方法 获取60例心肌梗死患者及40例正常人的标准心尖部左室长轴、两腔和四腔观组织速度图像,离线分析左心室6个壁基底段、中间段和心尖段共18个位点及左心室各壁二尖瓣环的组织速度曲线,测量心电图QRS波起始点至各位点心肌舒张早期峰值速度(Ea)的时限(TQ E)。计算同一节段6个壁间TQ E的最大差值(Inter ΔTQ E)、同一壁内3个节段间TQ E的最大差值(Intra ΔTQ E)及左 |
| 英文摘要: |
| Objective To evaluate the diastole asynchrony of the different segment s of left ventricle (LV) and its relation with LV diastole function in the patient s with myocardial infarction by quantitative tissue velocity imaging (QTVI) Methods Sixty patients with myocardial infarction and 40 healthy people were studied by QTVI The regional velocity profiles of 18 segments of LV and mitral annulus of six walls along LV apical long axis view, apical two chamber view and four chamber view were obtained The time (TQ E) from onset of QRS complexes to peak velocity during early diastole were measured The maximal difference in TQ E with in the same wall (Intra ΔTQ E ), the same segment (Inter ΔTQ E), all 18 segments (Max ΔTQ E ) of LV and the mean ratio of mitral annulus early and late diastole peak velocity of six walls were calculated (Ea/Aa′) The end diastolic volume (EDV), end systolic volume (ESV) and ejection fraction (EF) of left ventricular were measured by usual echocardiography Results The EDV and ESV were markedly increased in myocardial infarction group compared with control group, but the EF was significantly reduced in myocardial infarction group The Inter ΔTQ E, Int ra ΔTQ E, Max ΔTQ E were significantly prolonged and Ea/Aa′ was reduced in myocardial infarction groups compared with control group Max ΔTQ E were correlated negatively with Ea/Aa′ and EF, positively with EDV and ESV in patients with myocardial infarction Conclusion Asynchrony diastole is a necessary factor causing impairment of LV diastole function exists within the same wall and the same segment of LV in patients with myocardial infarction QTVI is a rapid, comprehensive, and valuable method to quantitatively assess LV remodeling and diastolic function after acute myocardial infarction |
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