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A member asked:
Can the reading of a 10 week gestational age be wrong? is it possible that the crown can be larger than other fetuses?
3 doctors weighed in across 2 answers
No : Early in pregnancy each fetus grows at about the same rate. Later on in pregnancy they begin to differentiate. At 10 weeks the sonographic measurements are going to be every accurate. There is only about a 5-7 day margin of error.
Answered 7/14/2016
5.4k views
Yes: Prenatal ultrasounds are not 100% accurate. Readings also depend on the training and experience of the tech and the ob. Ultrasonography cannot detect certain anomalies in the fetuses. There have been cases when fetuses have been aborted to find out, in the post-mortem, that they were perfectly normal. But, ultrasound remains a great diagnostic tool and many lives have been saved by it.
Answered 6/26/2014
4.9k views
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