Gunson method

Gunson method

a method of radiographic examination of the pharynx and upper esophagus during swallowing. A dark-colored shoestring is tied around the patient's throat just above the thyroid cartilage. The movement of the larynx is then shown by the elevation of the shoestring as the thyroid cartilage moves anteriorly, followed immediately by displacement of the shoestring as the cartilage passes superiorly.