产前诊断是指在胎儿出生前,通过各种手段对胎儿进行先天性缺陷或遗传疾病的诊断。它涉及的范围比较广泛,既有临床学科,又有基础学科,主要包括细胞遗传学、分子遗传学、生物化学、影像学、免疫学、产科学等内容。近些年产前诊断发展迅速,已经不仅仅局限于诊断,研究的重点也开始 Prenatal diagnosis refers to the fetus before birth by a variety of means of fetal congenital defects or genetic disease diagnosis. It involves a wide range of both clinical and basic disciplines, including cytogenetics, molecular genetics, biochemistry, imaging, immunology, obstetrics and so on. In recent years, the rapid development of prenatal diagnosis, has not only limited to diagnosis, the focus of the study also started