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A member asked:
I'm 18 weeks pregnant and i just had an ultrasound with a biparital diameter of 19 weeks and femur lenght of 18 w is that normal or the head is large?
A doctor has provided 1 answer
Within normal: The age is an estimate based on multiple studies. You cannot look at each individually. Also, the older the fetus, the less accurate the dating.
Answered 12/31/2012
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