An obstetrical ultrasound uses sound waves to create the image of the embryo or fetus inside the mother’s uterus. The procedure is performed by physicians who will evaluate the images to detect complications, birth defects, placenta size, cervix size, and the gender of the baby.
Obstetrical ultrasounds do not require preparations beforehand. Physicians typically advise women who need an obstetrical ultrasound to wear loose clothes for the duration of the procedure. Obstetrical ultrasounds are commonly mistaken as a harmful procedure, but it is the preferred method for monitoring babies and mothers.