A prenatal ultrasound test uses high-frequency sound waves, inaudible to the human ear, that are transmitted through the abdomen via a device called a transducer to look at the inside of the abdomen. With prenatal ultrasound, the echoes are recorded and transformed into video or photographic images of your baby.
The ultrasound can be used during pregnancy to show images of the baby, amniotic sac, placenta, and ovaries. Major anatomical abnormalities or birth defects are visible on an ultrasound.
An ultrasound may be performed earlier in your pregnancy to determine:
1) Presence of more than one fetus
2) Your due date or gestational age 3) Health of the baby
4) Placenta location
5) Amount of amniotic fluid around the baby
6) Position of the baby
7) Baby’s expected weight
There are two types of prenatal ultrasound. They are 3-D and 4-D Ultrasound.
