Baby dating scan be wrong
Hard tissues such as bone reflect as white in the image, and soft tissues appear grey and speckled. Examples of ultrasonography you may see used during your pregnancy.
Fluids (amniotic fluid) do not reflect any echoes so appear black. Most parents look forward to their scan because it gives them the first glimpse of their baby.
Otherwise a scan is generally booked in the first trimester to confirm pregnancy, exclude ectopic or molar pregnancies, confirm cardiac pulsation and measure the crown to rump length for dating.
Ultrasound examinations are performed on your lower abdomen.
Known as the anomaly scan or Level II to check that your baby is developing normally.
A scan performed at 18 to 20 weeks the fetus is large enough for an accurate survey of the fetal anatomy.
The ability to assign gender increases with increasing gestational age.
If you have any bleeding complications in pregnancy, the lower part of the uterus needs to be viewed carefully to make sure that the afterbirth (placenta) is not in the way.