最佳答案(优质答案）：<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p><iframe class="ikqb-map" map="iknow/page.html?iknowflg=1&newmap=1&l=17&t=B_NORMAL_MAP&c=11856174.965,3428638.39&b=11856094.07,3428555.97&i=0|-1|-1&s=s%26addr%3D0%26wd%3D%25E9%2587%258D%25E5%25BA%2586%25E5%25AE%2589%25E7%2590%25AA%25E5%2584%25BF%25E5%258C%25BB%25E9%2599%25A2%26c%3D279%26src%3D0&t=1478774427301"></iframe></p><p>ey liked—motors, motor bicycles, lorries, and push-bicycles b<br></p><div class="wgt-best-mask"> <div class="wgt-answers-showbtn"><span class="wgt-best-arrowdown"></span> </div> </div> Nt是胎儿颈透明厚度，B超里测量，一般和早唐一起做。国妇婴做这个不是看末次月经的时间，而是根据宝宝大小的。宝宝要大于47mm数据才有意义，如果宝宝大小达标，十一周也是可以做的，做完之后会抽血验早唐，血液加B超的数据一起看可起到筛查目的。苏薇洁 - 副主任医师 | 上海交通大学医学院附属第九人民医院整复外科