Echocardiography in infants and children.

Echocardiography is a well established, non-invasive diagnostic technique that has assumed a prominent place in the armamentarium of the pediatric cardiologist. The principles and techniques of echocardiography are explained. In addition, the measurements and interpretation are described, as well as the deductive approach that leads to a specific diagnosis. The purpose of this discussion is to provide the pediatrician with an understanding of the appropriate application, value, and limitation of the echocardiogram.