二维应变——一种用于心肌功能实时定量超声心动图评估的新型软件。

Two-dimensional strain-a novel software for real-time quantitative echocardiographic assessment of myocardial function.

作者信息

Leitman Marina, Lysyansky Peter, Sidenko Stanislav, Shir Vladimir, Peleg Eli, Binenbaum Michal, Kaluski Edo, Krakover Ricardo, Vered Zvi

机构信息

Cardiology Department, Assaf Harofeh Medical Center, Zerifin 70300, Israel.

出版信息

J Am Soc Echocardiogr. 2004 Oct;17(10):1021-9. doi: 10.1016/j.echo.2004.06.019.

DOI:10.1016/j.echo.2004.06.019

PMID:15452466

Abstract

OBJECTIVES

We sought to assess the feasibility of 2-dimensional strain, a novel software for real-time quantitative echocardiographic assessment of myocardial function.

METHODS

Conventional and a novel non-Doppler-based echocardiography technique for advanced wall-motion analysis were performed in 20 patients with myocardial infarction and 10 healthy volunteers from the apical views. Two-dimensional strain is on the basis of the estimation that a discrete set of tissue velocities are present per each of many small elements on the ultrasound image. This software permits real-time assessment of myocardial velocities, strain, and strain rate. These parameters were also compared with Doppler tissue imaging measurements in 10 additional patients.

RESULTS

In all, 80.3% of infarct and 97.8% of normal segments could be adequately tracked by the software. Peak systolic strain, strain rate, and peak systolic myocardial velocities, calculated from the software, were significantly higher in the normal than in the infarct segments. In the 10 additional patients, velocities, strain, and strain rate obtained with the novel software were not significantly different from those obtained with Doppler tissue imaging.

CONCLUSION

Two-dimensional strain can accomplish real-time wall-motion analysis, and has the potential to become a standard for real-time automatic echocardiographic assessment of cardiac function.

摘要

目的

我们旨在评估二维应变这一用于心肌功能实时定量超声心动图评估的新型软件的可行性。

方法

对20例心肌梗死患者和10名健康志愿者进行了经心尖切面的传统及一种新型的基于非多普勒的先进壁运动分析超声心动图技术检查。二维应变基于这样一种估计，即超声图像上许多小单元中的每一个都存在一组离散的组织速度。该软件可对心肌速度、应变及应变率进行实时评估。还将这些参数与另外10例患者的多普勒组织成像测量结果进行了比较。