Two-dimensional strain - A novel software for real-time quantitative echocardiographic assessment of myocardial function
Two-dimensional strain - A novel software for real-time quantitative echocardiographic assessment of myocardial function
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DOI：
10.1016/j.echo.2004.06.019
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发表时间：
2004-10-01
影响因子：
6.5
通讯作者：
Vered, Z
中科院分区：
文献类型：
--
作者：
Leitman, M;Lysyansky, P;Vered, Z
目的：我们试图评估二维应变的可行性，二维应变是一种实时定量超声心动图评估心肌功能的新型软件。方法：对 20 名心肌梗死患者和 10 名健康志愿者进行心尖切面高级室壁运动分析的传统和新型非多普勒超声心动图技术。二维应变基于超声图像上许多小元素中的每一个都存在一组离散的组织速度的估计。该软件可以实时评估心肌速度、应变和应变率。这些参数还与另外 10 名患者的多普勒组织成像测量结果进行了比较。结果：总的来说，软件可以充分跟踪 80.3% 的梗塞部位和 97.8% 的正常部位。由软件计算出的峰值收缩应变、应变率和峰值收缩心肌速度在正常部分显着高于梗塞部分。在另外10名患者中，使用该软件获得的速度、应变和应变率与多普勒组织成像获得的速度、应变和应变率没有显着差异。结论：二维应变可以完成实时室壁运动分析，并有潜力成为实时自动超声心动图评估心功能的标准。
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.