Abdominal ultrasound
Definition

Abdominal ultrasound is an imaging procedure used to examine the internal organs of the abdomen including the liver, gallbladder, spleen, pancreas, and kidneys. The blood vessels to some of these organs can also be evaluated with the use of ultrasound techniques.

The ultrasound machine sends out high-frequency sound waves that reflect off body structures to create a picture. Unlike with x-rays, there is no ionizing radiation exposure with this test.

Alternative Names

Ultrasound - abdomen; Abdominal sonogram

How the test is performed

The test is done in the ultrasound or radiology department. You will be lying down for the procedure. A clear, water-based conducting gel is applied to the skin over the area being examined to help with the transmission of the sound waves. The ultrasound transducer (a handheld probe) is then moved over the abdomen.

You may be asked to move to other positions so the health care provider can examine different areas. You may also be asked to hold your breath for short periods of time during the examination.

The procedure usually takes less than 30 minutes.

How to prepare for the test

Preparation for the procedure depends on the nature of the problem and your age. Usually patients are asked to not eat or drink for several hours before the examination. Your health care provider will advise you about specific preparation.

How the test will feel

There is little discomfort. The conducting gel may feel slightly cold and wet.

Why the test is performed

There are many reasons for performing an abdominal ultrasound, including looking for the following:

  • A cause of abdominal pain
  • Stones in the gallbladder or kidney
  • A cause for enlargement of an abdominal organ

The reason for the examination will depend on your symptoms.

Normal Values

The organs examined are normal in appearance.

What abnormal results mean

The significance of abnormal results depends on the organ being examined and the nature of the problem. You should consult your health care provider with any questions and concerns.

Many possible conditions could be revealed by an abdominal ultrasound. Some of these include:

What the risks are

There is no documented risk. No ionizing radiation exposure is involved.

Previous | Next
Review date: October 23, 2006
Reviewed by: Stuart Bentley-Hibbert, M.D., Ph.D., Department of Radiology, Weill Cornell Medical Center, New York, NY. Review provided by VeriMed Healthcare Network.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. � 1997- 2008 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.