Technologic advances and ultrasonographer-physician experience in fetal imaging have led to significant improvements in our ability to distinguish between normal and abnormal fetal structural development in the latter part of the first trimester. As a critical component of pregnancy care, assessment of fetal anatomy at the end of the first trimester with a standardized imaging protocol should be offered to all pregnant patients regardless of aneuploidy screening results because it has been demonstrated to identify approximately half of fetal structural malformations. Early identification of abnormalities allows focused genetic counseling, timely diagnostic testing, and subspecialist consultation. In addition, a normal ultrasound examination result offers some degree of reassurance to most patients. Use of cell-free DNA alone for aneuploidy screening while foregoing an accompanying early anatomic evaluation of the fetus will result in many anomalies that are typically detected in the first trimester not being identified until later in pregnancy, thus potentially diminishing the quality of obstetric care for pregnant individuals and possibly limiting their reproductive options, including pregnancy termination.

中文翻译：

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常规产科实践中的早孕期超声筛查。

胎儿成像方面的技术进步和超声医师/医生的经验使我们在妊娠前三个月后期区分正常和异常胎儿结构发育的能力显着提高。作为妊娠护理的一个重要组成部分，无论非整倍体筛查结果如何，都应向所有怀孕患者提供妊娠前三个月末使用标准化成像方案对胎儿解剖结构的评估，因为它已被证明可以识别大约一半的胎儿结构畸形。早期发现异常可以进行集中的遗传咨询、及时的诊断测试和亚专科咨询。此外，正常的超声检查结果可以让大多数患者在一定程度上放心。单独使用游离 DNA 进行非整倍体筛查，同时放弃对胎儿进行早期解剖学评估，将导致许多通常在妊娠早期检测到的异常现象直到妊娠后期才被发现，从而可能降低产科护理的质量。怀孕个体并可能限制其生育选择，包括终止妊娠。