10 Questions
Where is the thyroid gland located?
In the anteroinferior neck at the level of the thyroid cartilage
What is the typical shape of the thyroid gland?
Elliptical
What is the normal size of the thyroid gland in a newborn?
18 to 20 mm
What is the normal volume of the thyroid gland in adults?
18.6 ± 4.5 ml
What is the position of the patient during sonographic evaluation of the thyroid?
Supine position with a pillow under both shoulders to provide moderate hyperextension of the neck
What type of transducer is used in sonographic evaluation of the thyroid?
High-frequency linear-array transducer
What is the relationship between the esophagus and the trachea?
The esophagus is adjacent to the trachea with a hypoechoic rim surrounding an echogenic center
What is the typical AP diameter of the isthmus?
4 to 6 mm
Which of the following is true about the thyroid gland volume?
The volume is larger in males than in females
How is the thyroid volume calculated?
Ellipsoid formula with a correction factor
This quiz covers the sonographic evaluation of the thyroid, including transverse imaging landmarks and measurements. It includes the identification of the trachea, common carotid artery, and internal jugular vein.
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