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首页> 外文期刊>Circulation journal >Normal Range of Left Ventricular 2-Dimensional Strain – Japanese Ultrasound Speckle Tracking of the Left Ventricle (JUSTICE) Study –
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Normal Range of Left Ventricular 2-Dimensional Strain – Japanese Ultrasound Speckle Tracking of the Left Ventricle (JUSTICE) Study –

机译：左心室二维应变的正常范围–左心室的日本超声斑点跟踪（JUSTICE）研究–

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Background: ?To determine the normal range of left ventricular (LV) 2- dimensional (2-D) strain and vendor-specific differences, a multicenter prospective 2-D strain study endorsed by the Japanese Society of Echocardiography was conducted. Methods and Results: ?2-D speckle tracking analysis was performed on 817 healthy subjects (age range, 0–88 years); the images included 3 LV short axis and 3 apical views using an ultrasound system from 1 of the 3 different vendors (V1, n=333; V2, n=330; V3, n=337). With the 2-D speckle tracking software from each vendor, radial, circumferential and longitudinal strain were measured using an 18-segment model. Inter-vendor variability was also assessed in a subset of subjects. The feasibility for 2-D strain measurements was different among the 3 vendors (V1, 83%; V2, 70%; V3, 88%, P1, 54.6±12.6%; V2, 36.3±8.2%; V3, 51.4±8.0%), circumferential (V1, –22.8±2.9%; V2, –22.2±3.2%; V3, –30.5±3.8%), and longitudinal (V1, –21.3±2.1%; V2, –18.9±2.5%; V3, –19.9±2.4%) strain measurements were significantly different for each of the vendors. Segmental strain was also different between the 3 vendors. On inter-vendor analysis, vendor agreement ranged from mild to moderate. Conclusions: ?Reference values are provided for normal 2-D strain for 3 different ultrasound vendors. Due to a low inter-vendor agreement, 2-D strain data are not interchangeable when conducting a longitudinal follow-up or a cross-sectional assessment of LV function.??(Circ J?2012; 76: 2623–2632)
机译：背景：为了确定左心室（LV）二维（2-D）应变的正常范围和供应商特定的差异，日本超声心动图学会认可了一项多中心前瞻性二维应变研究。方法和结果：对817名健康受试者（年龄在0-88岁）进行了2-D斑点跟踪分析。该图像包括3个不同供应商中的1个的超声系统使用的3个LV短轴和3个顶视图（V 1 ，n = 333; V 2 ，n = 330 ; V 3 ，n = 337）。使用每个供应商提供的二维斑点跟踪软件，使用18段模型测量径向，周向和纵向应变。还评估了部分受试者的供应商间差异。 3个供应商之间进行二维应变测量的可行性有所不同（V 1 ，83％; V 2 ，70％; V 3 ，88％，P1 ，54.6±12.6％; V 2 ，36.3±8.2％; V 3 ，51.4±8.0％），圆周（V < sub> 1 ，– 22.8±2.9％; V 2 ，– 22.2±3.2％; V 3 ，– 30.5±3.8％）和纵向（ V 1 ，– 21.3±2.1％; V 2 ，– 18.9±2.5％; V 3 ，– 19.9±2.4％）应变测量对于每个供应商而言，都有很大的不同。 3家供应商之间的细分压力也有所不同。在供应商间分析中，供应商协议的范围从轻度到中度。结论：？为3个不同的超声供应商提供了正常二维应变的参考值。由于供应商之间的协议较低，在进行纵向随访或对LV功能进行横截面评估时，二维应变数据不可互换。（Circ J？2012; 76：2623-2632）

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