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1产前筛查11超声Benaceraf[1]首次报道中孕超声检查唐氏综合征(Down’ssyndrome,Ds)Ds胎儿颈后皮肤及软组织厚度增加,宫内有此表现者,80%出生后被证实为Ds。他对低危人群检查后发现22%染色体核型异常胎儿颈项厚度(NT)...
1 prenatal screening 1 1 Ultrasound Benaceraf [1] first reported in the second trimester pregnancy ultrasound Down Syndrome (Ds) Ds fetus neck and skin and soft tissue thickness increased, intrauterine performance of this, 80% of the birth After confirmed as Ds. He found 22% of fetal chromosomal abnormalities fetal neck thickness (NT) after examination of low-risk groups ...