近十余年来,随着超声技术的发展和超声工作者经验的提高,超声检查被逐步应用于胎儿染色体异常的筛查中,遗传学超声检查应运而生。大多数染色体异常的胎儿或多或少存在一些解剖结构的异常,有些表现为明显的脏器结构异常,有些仅表现为微小结构的异常即发现超声遗传标记物,或被称 In the recent ten years, with the development of ultrasound technology and the improvement of the experience of ultrasound workers, ultrasound examination has been gradually applied to the screening of fetal chromosomal abnormalities, and genetic ultrasound examination has emerged. Most fetuses with chromosomal abnormalities have more or less abnormalities in some anatomical structures, some show obvious organ structural abnormalities, while others show only microstructural abnormalities that are found with ultrasound genetic markers or are called