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妊娠囊
孕中期

        妊娠囊 (gestational sac,GS)是最早期確定妊娠的B超診斷依據。在增大的子宮輪廓內,見到圓形或橢圓形光環,邊界清晰,其內為無回聲區。子宮內出現妊娠囊是超聲診斷中最 早期出現的影響,妊娠5周時可以出現,在妊娠囊內可見到有節律的胎心搏動,胚芽和胎動??纱_診為早期妊娠、活胎?! ?nbsp;   (共 306 字)     [閱讀本文] >>

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