Ultrasound (or sonography) uses reflected sound waves to create real-time
images of soft tissues, including muscles, blood vessels and organs. Because
sound waves are used, there is no radiation exposure during this procedure.
Although most commonly used to examine the fetus during pregnancy, it is
also an effective tool for monitoring blood flow using Doppler ultrasound
technology. Ultrasound can be used to discover abnormalities in organs,
and detect narrowed arteries, clotted veins, or growths such as tumors