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首页> 外文期刊>Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine >Reproducibility of Fetal Lung Volume Measurements With 3-Dimensional Ultrasonography
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Reproducibility of Fetal Lung Volume Measurements With 3-Dimensional Ultrasonography

机译：三维超声检查胎儿肺体积测量的可重复性

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Objective. To build a nomogram of normal fetal lung volumes and to assess the reproducibility of measurements using 3-dimensional ultrasonography. Methods. Inclusion criteria were healthy women, singleton normal pregnancies, reliable dating, and 20 to 30 weeks' gestation. Exclusion criteria were discordance between clinical and ultrasonographic dating, patients lost to follow-up, and birth weight disorders. Patients were scanned at intervals longer than 2 weeks. Three volumes were acquired for each patient; only data from the volume with the best image quality was used for analysis. Volumes were rated and measured by the manual tracing method. We recorded whether the clavicle was visualized. Only good-quality volumes were included in analysis. The best volume was chosen, and each lung was measured. Results. A total of 75 patients were studied over a 9-month period, from which 182 volumes were analyzed. Of the 182 volumes, 15 (8.2%) were excluded for poor quality. The remaining 167 volumes were included in the final analysis. In 83 volumes (50%), the clavicle was not visualized. The best fit for total lung volume was a second-degree polynomial regression curve. Lung volume was 10.28 mL at 20 weeks and 51.49 mL at 30 weeks. Assessment of agreement was studied by selection of 40 volumes. Intraobserver variability was 5.48 mL (10.6%) and 3.07 mL (5.96%). Interobserver variability was 7 mL. Conclusions. Our findings suggest that 3-dimensional ultrasonographically derived measurements are reliable and reproducible up to 30 weeks if a standard measurement technique is used.
机译：目的。建立正常胎儿肺体积的诺模图，并使用3维超声检查评估测量的可重复性。方法。纳入标准为健康女性，单胎正常妊娠，可靠的约会以及妊娠20至30周。排除标准是临床和超声检查日期不一致，患者无法随访以及出生体重异常。患者的扫描间隔超过2周。每位患者获得三册;仅使用来自具有最佳图像质量的卷中的数据进行分析。通过手动跟踪方法对体积进行评估和测量。我们记录了锁骨是否可视化。分析中仅包括高质量的卷。选择最佳体积，并测量每个肺。结果。在9个月的时间内共研究了75位患者，从中分析了182卷。在182卷中，有15份（8.2％）由于质量差而被排除在外。剩余的167卷已计入最终分析。在83册（50％）中，锁骨未显示。肺部总体积的最佳拟合是二次多项式回归曲线。 20周时的肺体积为10.28 mL，30周时为51.49 mL。通过选择40卷来研究协议评估。观察者内差异为5.48 mL（10.6％）和3.07 mL（5.96％）。观察者之间的差异为7 mL。结论。我们的发现表明，如果使用标准的测量技术，则3维超声检查得出的测量结果可靠且可重复使用长达30周。

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