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14周nt值多少为正常值
更新时间: 2020-11-05 00:00:00  

14周nt值正常值为:不超过3mm。NT值也就是胎儿颈项透明层厚度。

NT检查是孕期检查项目之一,但是不少妈妈对于NT检查这个项目并不是十分了解。实际上,NT检查又称为颈后透明带扫描,是评估胎儿是否患有唐氏综合症的一种方法,准确率颇高。

关键词: nt 多少 正常值

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