An abdominal ultrasound (or sonogram) is a noninvasive (from outside of the body) imaging procedure used to examine organs in the abdomen including the gallbladder, kidneys, spleen, liver, pancreas and other abdominal organs. Ultrasound uses high-frequency sound waves that reflect off of a body structure to form an image. The echoes from the sound waves give information regarding size, distance and uniformity of the organ and are recorded and displayed on a monitor screen. These pictures are recorded in “real-time” which means that the screen is displaying what is actually happening during the exam. In turn, this helps them to diagnose a variety of conditions. The scan is safe and painless; There is no radiation exposure involved.