NORMAL LEFT-VENTRICULAR DIMENSIONS AND FUNCTION - INTERSTUDY REPRODUCIBILITY OF MEASUREMENTS WITH CINE MR IMAGING
NORMAL LEFT-VENTRICULAR DIMENSIONS AND FUNCTION - INTERSTUDY REPRODUCIBILITY OF MEASUREMENTS WITH CINE MR IMAGING
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DOI：
10.1148/radiology.174.3.2305059
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发表时间：
1990-03-01
期刊：
影响因子：
19.7
通讯作者：
HIGGINS, CB
中科院分区：
文献类型：
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作者：
SEMELKA, RC;TOMEI, E;HIGGINS, CB
作者评价了11名健康受试者在两种情况下使用电影磁共振（MR）成像获得的心室尺寸测量值的重现性。两名评审员以盲法分析研究，以确定左心室（LV）质量、容积、射血分数和收缩期室壁应力测量值的观察者间和研究间变异性。两项研究之间的LV质量显示出良好的重现性，两名观察者的LV收缩末期质量变异性为3.6%和3.8%。LV舒张末期容积变化5.2%和3.9%，LV收缩末期容积变化9.7%和9.0%。左室射血分数的变异性为5.0%和4.9%。最大的研究间变异性是收缩末期壁应力，分别为11.1%和13.5%，这主要是由于两项研究之间的动脉压变化。可以得出结论，电影MR图像的解剖和功能测量在研究之间具有重现性。较小的研究间变异性可能与以下事实有关：测量值直接来自包含整个心脏的电影MR图像，而不是仅依赖于样本图像的测量值和几何模型的使用。
The authors evaluated the reproducibility of measurements of ventricular dimensions obtained with cine magnetic resonance (MR) imaging performed on two occasions in 11 healthy subjects. Two reviewers analyzed the studies in a blinded fashion to determine interobserver and interstudy variability of measurements of left ventricular (LV) mass, volume, ejection fraction, and systolic wall stress. LV mass showed good reproducibility between studies, with 3.6% and 3.8% variability for LV end-systolic mass for the two observers. LV end-diastolic volume varied by 5.2% and 3.9%, and LV end-systolic volume, by 9.7% and 9.0%. Variability for LV ejection fraction was 5.0% and 4.9%. The largest interstudy variability was end-systolic wall stress, 11.1% and 13.5%, which was due mostly to changes in arterial pressure between the two studies. It is concluded that anatomic and functional measurements from cine MR images are reproducible between studies. The small interstudy variability is likely related to the fact that the measurements are derived directly from cine MR images that encompass the entire heart rather than depend on measurements of only sample images and the use of geometric models.