Accurate dating pregnancy ultrasound
It is particularly reassuring for women who have suffered a previous miscarriage or ectopic pregnancy.An early pregnancy scan will: You can have an early pregnancy scan any time from 5 weeks to 11 weeks and 1 day into your pregnancy.A nuchal translucency ultrasound (commonly called a “nuchal scan” or “NT scan”) is an ultrasound performed between 11.5 and 13 weeks 6 days gestation.It is usually part of an assessment called combined first trimester screening.Chorionic villus sampling and amniocentesis are invasive tests, involving putting needles into the placenta or amniotic sac, and they are associated with an increased risk of miscarriage.
This testing combines the nuchal translucency ultrasound with specific blood tests.
Transabdominal ultrasound involves scanning through your lower abdomen.
A small amount of ultrasound gel is put on the skin of the lower abdomen, with the ultrasound probe then scanning through this gel.
The gel helps improve contact between the probe and your skin.
Occasionally a transvaginal ultrasound is also needed.Nuchal translucency ultrasound alone can also provide this risk assessment, but it is not as accurate as combined first trimester screening.