FETAL HEAD AND ABDOMINAL CIRCUMFERENCES .1. EVALUATION OF MEASUREMENT ERRORS
FETAL HEAD AND ABDOMINAL CIRCUMFERENCES .1. EVALUATION OF MEASUREMENT ERRORS
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DOI：
10.1002/jcu.1870100803
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发表时间：
1982-01-01
影响因子：
0.9
通讯作者：
CARPENTER, RJ
中科院分区：
文献类型：
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作者：
DETER, RL;HARRIST, RB;CARPENTER, RJ
使用动态图像超声检查了与测量胎儿头部和腹围(HC、AC)相关的几个误差来源。除非图像中存在技术差异(仅限HC)，且两种测量的随机误差范围均为4-5%(2SD)，否则未发现统计上显著的系统性观察者内误差。虽然用于获取测量图像的程序的不同对准确度有一些影响(仅限HC)，但不同调查人员测量结果差异的主要来源是测量方法。不同的测量设备得出的结果不同，不同的研究人员使用相同的设备的方式也不同。在最佳测量条件下，有经验的研究人员的观察者间误差为1.2+-。4.3(SD)%的HC和2.4。+-。AC为1.6%。出生前和出生后的测量结果显示，HC没有系统性差异，而AC的产前测量值要高出6%。随机差为。+-。HC和+-为6%(2SD)。AC为13%(2SD)。
Several sources of error associated with the measurement of [human] fetal head and abdominal circumferences (HC, AC) were examined with dynamic image ultrasound. Statistically significant systematic intraobserver errors were not seen unless technical differences in the images were present (HC only) and the range for random errors was 4-5% (2 SD) for both measurements. Although differences in the procedures used to acquire images for measurement had some effect on accuracy (HC only), the primary source of variations in measurements made by different investigators was the measurement methods. Different measuring devices gave different results and different investigators used the same devices differently. Under optimal measuring conditions, the interobserver error for experienced investigators was 1.2 .+-. 4.3 (SD)% for HC and 2.4 .+-. 1.6% for AC. Comparison of prenatal and postnatal measurements indicated that there were no systematic differences for HC, but for AC the prenatal measurements were 6% greater. Random differences were .+-. 6% (2 SD) for HC and .+-. 13% (2 SD) for AC.