How accurate are dating scans

13-Jul-2016 11:14

The probe is covered with a disposable protective sheath.

A small amount of ultrasound gel is placed on the end of this probe.

However, in the early pregnancy, the developing embryo is very small (at 6 weeks gestation, the baby is only 5-9mm long) and a transvaginal ultrasound may be required to get a better image of the baby.

Transvaginal ultrasound is safe and commonly performed during all stages of pregnancy, including the first trimester. Transabdominal ultrasound involves scanning through your lower abdomen.

If there’s any cause for concern then you may be recommended to have the scan before the 12-week mark, and your midwife will be able to assist you with this.

Ask your GP if you want the reassurance of an early scan. The scan's main purpose is to work out accurately how many weeks pregnant you are and estimate your due date.Transvaginal ultrasound usually produces better and clearer images of the female pelvic organs including the developing pregnancy, because the ultrasound probe lies closer to these structures.The transvaginal ultrasound probe is thin, about 2cm diameter.Your midwife may recommend an early scan at between six weeks and 10 weeks if you have experienced bleeding.You may also be offered an early scan if you've had a previous miscarriage.

Ask your GP if you want the reassurance of an early scan. The scan's main purpose is to work out accurately how many weeks pregnant you are and estimate your due date.Transvaginal ultrasound usually produces better and clearer images of the female pelvic organs including the developing pregnancy, because the ultrasound probe lies closer to these structures.The transvaginal ultrasound probe is thin, about 2cm diameter.Your midwife may recommend an early scan at between six weeks and 10 weeks if you have experienced bleeding.You may also be offered an early scan if you've had a previous miscarriage.A small amount of ultrasound gel is put on the skin of the lower abdomen, with the ultrasound probe then scanning through this gel.