| 摘要: |
| 摘 要
目的 应用三维斑点追踪成像（3D-STI）技术评价肥厚型心肌病（HCM）患者的左心室收缩功能。
方法 病例组选取19例HCM患者及对照组年龄、性别均匹配的19例健康志愿者，行常规二维超声心动图检查，留取三维图像并存储。三维图像用4D-Auto LVQ进行分析，得到左室各水平旋转角度曲线，计算得出左室整体扭转角度（twist）及扭力（torsion），比较两组之间的差异。
结果 与对照组比较HCM组整体扭转角度及扭力均增加，整体纵向应变减低，差异显著有统计学意义（P<0.01）。HCM组二尖瓣水平旋转角度、二尖瓣水平及心尖水平扭力均增加，差异有统计学意义。
结论 HCM患者的左心室扭转增加，长轴应变减低，心肌功能不同程度受损。3D-STI可以反映HCM患者左心室整体及各水平收缩功能的变化。 |
| 关键词: 超声心动描计术 三维斑点追踪 肥厚型心肌病 左室功能 |
| DOI： |
| 投稿时间：2018-12-01修订日期：2019-01-10 |
| 基金项目:河北省2017年度医学科学研究重点课题计划（20170614） |
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| Assessment of left ventricular twist by three-dimensional speckle tracking imaging in patients with hypertrophic cardiomyopathy |
| zhou jinling,wang yueheng |
| () |
| Abstract: |
| Abstract：Objective To assess the left ventricular systolic function in patients with hypertrophic cardiomyopathy by three-dimensional speckle tracking imaging(3D-STI).Methods 19 healthy volunteers in the control group and 19 patients of HCM in the case group were selected. The three-dimensional full-volume dynamic images of left ventricle were acquired and stored. 4D-auto LVQ were used to obtained the horizontal rotation curves, the global twist and torsion of the left ventricle. Results Compared with the control group,the global twist and torsion of the HCM group were increased, while the global longitudinal strain was significantly decreased (P<0.01). Basal plane rotation angle were significantly increased in the HCM group. Conclusion Torsion increases with long-axis strain decreases when myocardial function is impaired in HCM patients. 3D-STI could be used as a technique to reflect the changes of left ventricular systolic function at all planes in HCM patients. |
| Key words: Echocardiography three-dimensional speckle tracking hypertrophic cardiomyopathy left ventricular function |
