Thyroid Ultrasound

Definition

A thyroid ultrasound is an examination used to image the thyroid – a gland in the neck that regulates metabolism.

How the test is performed

The test is usually done in one of our ultrasound examination rooms.

You will lie on your back with your neck extended over a rolled pillow (hyperextended). The sonographer will place a gel onto your neck. Next, the sonographer will move the transducer, over this area.

How to prepare for the test

No special preparation is necessary for this test.

How the test will feel

You should feel very little discomfort with this test. The gel may be cold.

Why the test is performed

A thyroid ultrasound is most commonly done to evaluate thyroid nodules. The exam can help tell the difference between a sac containing fluid (cyst) and abnormal tissue that may or may not be cancerous (a tumor).

Normal Values

The thyroid is of normal size, shape, and position.

What abnormal results mean

Abnormal results may be due to:

• Cysts
• Enlargement of the thyroid gland (goiter)
• Thyroid nodules
• Tumours

Your doctor can use these results and the results of other tests to direct you

What the risks are

There are no documented risks of ultrasound