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Abdominal ultrasound
Abdominal ultrasound


Digestive system
Digestive system


Kidney anatomy
Kidney anatomy


Ultrasound in pregnancy
Ultrasound in pregnancy


Kidney - blood and urine flow
Kidney - blood and urine flow


Abdominal ultrasound
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 that lead to some of these organs can also be looked at with ultrasound.



Alternative Names:

Ultrasound - abdomen; Abdominal sonogram



How the test is performed:

An ultrasound machine creates images that allow various organs in the body to be examined. The machine sends out high-frequency sound waves, which reflect off body structures to create a picture. A computer receives these reflected waves and uses them to create a picture. Unlike with x-rays or CT scans, there is no ionizing radiation exposure with this test.

You will be lying down for the procedure. A clear, water-based conducting gel is applied to the skin over the abdomen. This helps with the transmission of the sound waves. A handheld probe called a transducer is then moved over the abdomen.

You may be asked to change position so that 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:

Your health care provider may order this test to:

  • Determine the cause of abdominal pain
  • Learn why there is swelling of an abdominal organ
  • Look for stones in the gallbladder or kidney

The specific reason for the test 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.



Special considerations:



References:

Cosgrove DO, Meire HB, Lim A, Eckersley RJ. Ultrasound: general principles. In: Grainger RC, Allison D, Adam, Dixon AK, eds. Diagnostic Radiology: A Textbook of Medical Imaging. 5th ed. New York, NY: Churchill Livingstone; 2008:chap 3.

Pickhardt PJ. Diagnostic imaging procedures in gastroenterology. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 13.




Review Date: 10/29/2008
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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