A fetal echocardiogram is a detailed ultrasound performed of the baby's heart before the baby is born. A small camera called a transducer is placed on the pregnant mother's abdomen and sends out ultrasonic sound waves. The ultrasound waves bounce off the baby's organs, including the heart and are sent back to the camera which then creates a moving picture of the different parts of the heart for the doctor to evaluate. The sound waves can also detect blood flow throughout the baby's heart. This enables the doctor to evaluate the structure and function of the fetal heart.