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首页> 外文期刊>Echo Research and Practice >Two-dimensional global and segmental longitudinal strain: are the results from software in different high-end ultrasound systems comparable?
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Two-dimensional global and segmental longitudinal strain: are the results from software in different high-end ultrasound systems comparable?

机译：二维整体和分段纵向应变：不同高端超声系统中软件的结果是否具有可比性？

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To compare the peak global longitudinal myocardial strain (PGLS) and peak segmental longitudinal myocardial strain (PSLS) values by speckle-tracking echocardiography (STE) obtained using two different echocardiography devices. STE is an emerging quantitative ultrasound technique that allows an accurate evaluation of global and segmental myocardial function. However, there is a lack of standardization of the acquired data among different manufacturers. Sixty-three subjects, mean age 56.2±10.4 years, underwent complete echocardiographic studies with two different devices (Philips IE33 and General Electric VIVID E9) performed by the same operator. Thirty-one of them had known cardiac disease, with estimated left ventricular ejection fraction 50%, while 32 were free of any cardiovascular disease (control subjects). All images were digitally stored and analyzed using off-line post processing with QLAB 9 and EchoPAC 11 Software packages. PSLS and PGLS were calculated. A strong relationship between QLAB and EchoPAC was found for PGLS (r=0.91, P0.001), PSLS-4 chamber (CH; r=0.79, P0.001), PSLS-2CH (r=0.73, P0.001), and PSLS-3CH (r=0.78, P0.001) QLAB. Bland–Altman analysis showed absolute differences vs average of ?0.16, ?0.37, ?0.21, and ?0.16 for PGLS, PSLS-4CH, PSLS-2CH, and PSLS-apical long-axis views respectively. Segmental analysis showed a good agreement between the apical segments, whereas poor correlations were found for the basal segments. Receiver operating characteristic curve analysis showed that cutoff values for PGLS of ?17.5 and ?17.75% with Philips or GE systems gave a sensitivity and specificity of 93.5 and 87.5%, and 90 and 87.5%, respectively, in the discrimination of the patients from the controls. Both Philips and GE echo stations were found to give comparable results for PGLS, with approximately the same cutoff values, suggesting that their PGLS results may be interchangeable.
机译：通过使用两种不同超声心动图设备获得的斑点跟踪超声心动图（STE）来比较峰值总体纵向心肌应变（PGLS）和峰值节段性纵向心肌应变（PSLS）值。 STE是一种新兴的定量超声技术，可以准确评估整体和节段性心肌功能。但是，不同制造商之间缺乏所获取数据的标准化。六十三名平均年龄为56.2±10.4岁的受试者接受了由同一操作员执行的两种不同设备（Philips IE33和General Electric VIVID E9）的完整超声心动图研究。他们中有31名患有已知的心脏病，估计左心室射血分数<50％，而32名没有任何心血管疾病（对照组）。所有图像均通过QLAB 9和EchoPAC 11软件包的离线后处理进行数字存储和分析。计算了PSLS和PGLS。发现PGLS（r = 0.91，P <0.001），PSLS-4室（CH; r = 0.79，P <0.001），PSLS-2CH（r = 0.73，P <0.001），QLAB和EchoPAC之间存在很强的关系，和PSLS-3CH（r = 0.78，P <0.001）QLAB。 Bland–Altman分析显示，对于PGLS，PSLS-4CH，PSLS-2CH和PSLS顶角长轴视图，绝对差与平均值分别为0.16、0.37、0.21和0.16。节段分析显示根节之间的一致性好，而基节之间的相关性较差。接收器工作特性曲线分析表明，用飞利浦或GE系统对PGLS的截断值分别约为17.5％和17.75％，在区分患者与正常人时，其灵敏度和特异性分别为93.5％和87.5％，以及90％和87.5％。控制。发现飞利浦和GE回波测站都能为PGLS提供可比的结果，其截止值大致相同，这表明它们的PGLS结果可能是可互换的。

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