Ultrasound is a useful procedure for monitoring the baby' s development in the uterus. Ultrasound uses inaudible sound waves to produce a two-dimensional image of the baby while inside the mother' s uterus. The sound waves bounce off solid structures in the body and are transformed into an image on a monitor screen.
Solid structures, such as bones and muscles, reflect sound waves and appear as light gray or white. Soft or hollow areas, like the chambers of the heart, don' t reflect sound waves and appear dark or black.
An ultrasound can supply vital information about a mother' s pregnancy and her baby's health. Even though there are no known risks for ultrasound at present, it is highly recommended that pregnant women consult their physician before undergoing this procedure.