Wearing your street clothes, you will be asked to lie on a stretcher.
Ultrasound gel, usually warmed for your comfort, will be placed on either side of your neck.
Through the gel, the technician will apply to your neck a small hand-held device that emits sound waves (ultrasound probe).
When the test is completed, the technician will remove excess gel from your neck. The gel is water-soluble and will not stain your skin or clothes.