How accurate are early ultrasounds in dating pregnancy

Even when LMP is known, studies have shown that 40% of women have their due dates altered by more than 5 days after dating by ultrasound (American Journal of Obstetrics and Gynecology, 2004).

**The Pregnancy Resource Center offers free ultrasounds to determine how far along you are in your pregnancy and to see if your pregnancy is viable.

Our ultrasounds are performed by licensed ultrasound technicians under the direction of obstetricians.

The earlier the ultrasound is done, the more accurate it is at estimating the baby's due date.

A dating scan is an ultrasound examination which is performed in order to ...

If the pregnancy is very early the gestation sac and fetus will not be big ...

These measurements are computed automatically in the ultrasound machine’s software.

The software has certain measurement scales based on data from large populations, and your baby’s measurements are put into this scale.


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