Thyroid Ultrasound

Description - A thyroid ultrasound uses sound frequency in a range that is higher than humans are able to hear to produce images of internal structures on a viewing screen. This test is used to evaluate the tissue of the thyroid gland. The thyroid is located in the anterior neck region and is shaped like a bow-tie, having two halves (lobes): a right lobe and a left lobe joined by an isthmus. The thyroid is an endocrine gland that produces thyroid hormone. This hormone regulates the rate at which the human body carries on its necessary functions.

IndicationsThe thyroid ultrasound is used to evaluate lumps or masses that may appear in the area of the thyroid gland. Patients that have had radiation therapy are more prone to develop a lump or mass. Some lumps and masses may have been identified earlier with nuclear medicine imaging of the thyroid or have appeared as incidental findings on other tests such as carotid ultrasound, CT scan or MRI of the neck. A thyroid may become enlarged from over activity (Grave’s disease), from under activity (hypothyroidism), or from inflammation (Hashimoto’s disease).


Procedure - A small amount of gel is placed on the neck over the thyroid and the transducer is placed in contact with the skin. The small transducer sends sound waves into the body that reflect off the internal structures and are returned to the transducer. These echoes are transformed electronically into images on a monitor and are recorded on film. The test takes approximately 30 minutes.


Preparation - Fat free meal the night before the examination; nothing to eat or drink after midnight.

* This test information is intended for educational purposes only. This should not replace medical advice from your healthcare provider. Please call your healthcare provider if you have any medical questions concerning your health. For any questions regarding procedures, please contact Advanced Diagnostic P.C. office at 989-799-5699