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Thyroid ultrasoundDefinitionA thyroid ultrasound is an imaging method used to see the thyroid gland. The thyroid is a gland located in the neck that regulates metabolism. Ultrasound is a painless method that uses sound waves to create images of the inside of the body. Alternative NamesUltrasound - thyroid; Thyroid sonogram; Thyroid echogramHow the Test is PerformedThe test is usually done in the ultrasound or radiology department. You will lie with your neck hyperextended (extended beyond its usual limit). A lubricating gel will be placed onto your neck. Next, the ultrasound technician will move a wand, called a transducer, over the area. The transducer gives off sound waves. The sound waves go through the body and bounce off the area being studied (in this case, the thyroid gland). A computer looks at the pattern that the sound waves create when bouncing back, and creates an image. How to Prepare for the TestNo special preparation is necessary for this test. How the Test Will FeelYou should feel very little discomfort with this test. The gel may be cold. Why the Test is PerformedA thyroid ultrasound is usually done when you have a growth on your thyroid gland. The exam can help tell the difference between a cyst (a sac containing fluid) and a tumor (abnormal tissue that may or may not be cancerous). Normal ResultsThe thyroid is of normal size, shape, and position. What Abnormal Results MeanAbnormal results may be due to cysts, tumors, goiter (an enlargement of the thyroid gland), or thyroid nodules. Your doctor can use these results and the results of other tests to direct your care. Additional conditions under which the test may be performed include the following:
RisksThere are no documented risks of ultrasound.
Review Date:
10/23/2006 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. 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.  |
