An ultrasound exam is a safe diagnostic procedure that uses a very-high-frequency sound waves source and a sensitive receiver that captures the waves reflected by the internal organs to produce an image of the internal structures of the body. Originally developed in the late 1950's, over the years the ultrasound machines evolved with technology and become better and better, resulting in images of outstanding detail and clarity.

What is the reason to have an ultrasound exam instead of an X-ray or CT scan?   Ultrasound uses sound waves, not X-rays. Multiple studies have shown that these sound waves are harmless to the human body, and may be used with complete safety where CT scans or X-rays would be inappropriate, even on pregnant women, . In some other cases, either CT or ultrasound could be used to establish a diagnosis, but ultrasound exams are typically quicker and less expensive. Your doctor will order the best kind of exam for your situation.

An abdominal ultrasound exam looks at the gallbladder, kidneys, liver, pancreas, and spleen. It can also include a view of the aorta and urinary bladder.

During the examination, the patient lies on a bed with the abdominal area exposed. The person performing the examination will put a water-based gel on the skin surface. The gel helps to transmit the sound waves by excluding air between the transducer (an instrument about half the size of a telephone handset, containing both the sound waves source and the receiver) and the skin. The transducer will be moved slowly over the abdominal skin surface by the operator.

The abdominal ultrasound examination takes on average 30 minutes, and is painless. However, you may feel some discomfort when the operator presses the transducer against your abdomen.

You should not eat solid food or drink anything but water for six to eight hours before the exam. Routine medications may be taken. If you are diabetic consult with your doctor.