The nurse is preparing a patient for a thyroid scan. Which explanation by the nurse is appropriate?
a. "Sound waves will be used to create a picture of your thyroid gland."
b. "A thyroid scan is simply an x-ray of your thyroid gland."
c. "You will be given radioactive iodine, and a special camera will take pictures of your thyroid gland."
d. "You will be placed in a large instrument that uses magnetic energy to create an image of your thyroid gland."
ANS: C
For a thyroid scan, a radioactive material is injected or radioactive iodine is taken orally. The material is taken up by the thyroid gland. After a specified time, the thyroid gland is scanned with a scintillation camera. The scan will show "hot spots," which are nodules that are not malignant, or "cold spots" (areas that do not take up the radioactivity), which indicate malignancy. Ultrasound uses sound waves. It is not a simple x-ray. Magnetic resonance imaging (MRI) uses magnetic energy.
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