Dudley Nicholas J
Radiation Protection & Radiology Physics, Lincoln County Hospital, Lincoln, UK.
Ultrasound. 2021 Feb;29(1):4-9. doi: 10.1177/1742271X20945749. Epub 2020 Aug 3.
It is important to understand the uncertainty in fetal measurements when using them in the management of pregnancy. The aim of this essay is to provide background on errors and uncertainty, describing error sources and their potential impact, with guidance on improving accuracy. Errors can be systematic or random, arising from equipment, image plane selection, measurement method and caliper placement and influenced by image quality, training and experience. The uncertainty in measurements is larger than clinically significant differences in fetal size and growth. Errors can be reduced by implementing equipment acceptance testing, written procedures, training and audit.
在孕期管理中使用胎儿测量值时，了解其不确定性很重要。本文的目的是提供有关误差和不确定性的背景知识，描述误差来源及其潜在影响，并给出提高准确性的指导。误差可能是系统性的或随机的，源于设备、图像平面选择、测量方法和卡尺放置，并且受图像质量、培训和经验的影响。测量中的不确定性大于胎儿大小和生长方面具有临床意义的差异。通过实施设备验收测试、书面程序、培训和审核，可以减少误差。
