The Pediatric Echocardiography (PE) examination tests basic pediatric echocardiography knowledge and skills essential to Sonography Professionals. An echocardiogram (“echo”) is an ultrasound test that uses sound waves to view the heart. It is safe, painless, and without radiation. Pictures of the child’s heart can be viewed on a small monitor while the procedure is being performed. An echocardiogram is similar to a sonogram many women have had before a child was born; however, the echocardiogram focuses specifically on the heart and blood vessels around the heart.