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Nt的全称为nuchal translucency，翻译过来的中文名字为“颈部透明带”，一般孕妇怀孕12周时，进行nt检测。 检查结果是筛查胎儿是否存在畸形的一种指标，也是 唐氏筛查 的风险评估的依据。
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