First trimester ultrasound is one of the important paraclinical tests during pregnancy. First trimester ultrasound images provide early detection of congenital fetal abnormalities during this time, so pregnant women need to be consulted and understand the first trimester ultrasound schedule to closely monitor their health.

Ultrasound of the first trimester in particular and the entire pregnancy in general is a tool that helps obstetricians monitor the pregnancy. Ultrasound can be performed at many different times to assess the development of the baby in the mother's womb.