| 摘要: |
| 目的 评估TomTec工作站左房及左室两种斑点追踪超声心动图软件测量左房整体纵向应变及应变率的一致性分析。方法 收集64个受检者的临床资料及超声心动图图像，两名受规范化培训医师分别应用2D-STE左房及左室软件获得左房整体纵向收缩期应变(Sct)、通道期应变(Scd)、左房储存期应变(Sr=Sct+Scd)及收缩期应变率(SRct)、通道期应变率(SRcd)、储存期应变率(SRr)。通过比较测量者内和测量者间获得的左房应变及应变率测值以评估两种软件测量的一致性有无差异。结果 （1）两种软件测量者内和测量者间的测值存在差异，仅左室软件测量者间SRcd差异有统计学意义（P=0.01）；（2）Bland-Altman一致性检验提示两种软件有较好的一致性，但左房软件测值较左室软件偏倚小，一致性区间较左室软件范围小；（3）测量者信度分析，左房软件测值较左室软件一致性好。结论 二维斑点追踪超声心动图左房专用软件较左室软件测值偏倚小，一致性范围稳定，测量者的重测信度优秀，值得在左房功能分析中推广应用。 |
| 关键词: 斑点追踪 左房软件 左室软件 机械形变功能 一致性分析 |
| DOI： |
| 投稿时间：2018-07-11修订日期：2018-07-26 |
| 基金项目:广东省公益研究与能力建设项目计划(No 2014A020212676) |
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| A consistency analysis of left atrial deformation function measured by two dimensional speckle tracing echocardiography of left atrial software and left ventricular software |
| Li Zhilian,FEI Hongwen,LI Yekuo |
| (Nan Sha Center Hospital, Guangzhou First Municipal PeopleDdDd#39;DdDd#39;s Hospital,) |
| Abstract: |
| Objective To evaluate the consistency of left atrium global longitudinal strain and strain rate measured by TomTec left atrium and left ventricular speckle tracking software.Methods The clinical data and echocardiography images of 64 Subjects were collected . Two standardized trained physicians used 2D - STE left atrium and left ventricular software to obtain left atrium global longitudinal strain during contraction phase ( Sct ) , strain during conduit phase ( Scd ) , strain during reservoir phase( Sr = Sct + Scd ) , strain rate during contraction phase ( SRct ) , strain rate during conduit phase ( SRcd ) , strain rate during reservoir phase( SRr ) , respectively.To evaluate the consistency of left atrial strain and strain rate measured by softwares among interobserver and intraobserver. Result (1)There are differences in intra- and interobserver measuring the strain and strain rate with 2 different softwares，but only the SRcd measured by the left ventricular software had statistical intraobserver significance（P=0.01）.(2)Bland-Altman conformance test indicated that the two kinds of software had good consistency. Compared with the left ventricular software，the data measured by the left atrial software had a smaller bias and a narrower consistency interval. (3)The reliability analysis showed that the left atrial software measurements had better consistency than the left ventricular software.Conclusion Compared with the left ventricular software, the two dimensional speckle tracing echocardiography of the dedicated atrial software has less bias, stable range of consistency, and excellent reliability of retest, so it is worth popularizing and applying in the analysis of left atrial function. |
| Key words: Speckle tracing Left atrial software Left ventricular software Mechanical deformation function Consistency analysis |
