Ultrasound is an imaging system that uses sound waves instead of radiation to produce medical images. Ultrasound technology aids the physician in evaluating the structure of internal organs and can map blood flow through the vessels. During the ultrasound exam, the technologist uses a warm gel to move a small transducer across your skin to capture the images.

Many people think of ultrasound as a tool for checking up on the progress of a pregnancy. But it’s also widely used for many other purposes. These include diagnosing conditions affecting many different organs, including the heart, liver, kidneys, bladder, blood vessels and eyes.