Chap 18, Endocrine System, Clinical procedures

Question 1

Exophthalmometry

Answer 1

Measurement of eyeball protrusion (as in Graves disease) with an exophthalmometer.

Question 2

Computed tomography (CT) scan

Answer 2

X-ray imaging of endocrine glands in cross section and other views, to assess size and infiltration by tumor.

Question 3

Magnetic resonance imaging (MRI)

Answer 3

Magnetic waves produce images of the hypothalamus and pituitary gland to locate abnormalities.

Question 4

Thyroid scan

Answer 4

Scanner detects radioactivity and visualizes the thyroid gland.

Administration of radioactivity is either intravenous (with radioactive technetium) or oral (with radioactive iodine). The latter is called RAIU (radioactive iodine uptake scan). Thyroid function is assessed; nodules and tumors can be evaluated.

Question 5

Unltrasound examination

Answer 5

Sound waves show images of endocrine organs.

Thyroid ultrasound is the best method to evaluate thyroid structures and abnormalities (nodules).