1.
Esophageal activity can mimic ectopic thyroid tissue on a thyroid scan. To avoid misinterpretation:
2.
The mediastinum is the space in the thoracic cavity behind the sternum and in between the two pleural sacs that contains all of the following anatomical structures EXCEPT:
3.
Which of the following enlargement is termed as goiter?
4.
What is the usual range of a 24 hr radioiodine uptake in hyperthyroid patients diagnosed with subacute thyroiditis?
5.
Tc-99m and I-123 are the most commonly used agents for thyroid imaging. Thyroid imaging with technetium administration:
6.
A lone “cold” nodule in an otherwise normal thyroid gland warrants:
7.
Thyroid scintigraphy scan images reveals a cold nodule. Which of the following conditions explains the finding?
8.
The hormones T3 and T4 are coming from..
9.
Patient received 200 mCi of I-123 for thyroid uptake and scan. If the data shown below were obtained 6 hours post administration of I-123, what is the percentage thyroid uptake at 6 hours? 200 mCi I-123 capsules cts 135,890 cpm, Background cts 109 cpm, Thyroid cts 45,534 cpm, Thigh cts 2,109 cpm.
10.
“Single isotope dual phase technique” commonly applied in parathyroid imaging is based on the observation that:
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