What does dating scan mean?

If youre pregnant in England youll be offered an ultrasound scan at around 10 to 14 weeks of pregnancy. This is called the dating scan. Its used to see how far along in your pregnancy you are and check your babys development. The scan may also be part of a screening test for Downs syndrome.

When is a dating ultrasound done?

between 7-12 weeks Dating ultrasounds are most accurate when they happen between 7-12 weeks, and are calculated by measuring the fetus crown-rump length. This generally predicts the expected date of birth within 5 days.

How accurate is the dating ultrasound?

How accurate is the ultrasound examination? The earlier the ultrasound is done, the more accurate it is at estimating the babys due date. Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 - 5 days of accuracy. The most accurate time is between 8 and 11 weeks gestation.

What is an EDC in pregnancy?

The accurate determination of a patients due date, referred to by doctors and midwives as the EDC (Estimated Date of Confinement) or EDD (Estimated Date of Delivery), is very important for a variety of reasons.

Can an ultrasound Miss Twins at 8 weeks?

Ultrasound can tell us a lot about a pregnancy, but its not always perfect. This is particularly true in the early months of pregnancy. Though it is rare, it is possible to have a hidden twin that is not visible during early ultrasound screenings.