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20周胎儿双顶径股骨长是多少
更新时间: 2020-11-05 00:00:00  

20周胎儿双顶径股骨长的平均值为4.88±0.58mm,股骨长为3.35±O.47mm。

医生做B超时测得胎头双顶间径、头臀长度及股骨长度即可估算出胎龄,并推算出预产期。

关键词: 胎儿 股骨 多少

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