Ramer · Alavi Nuclear Medicine Technology

13 Thyroid, Parathyroid, and Salivary Gland Scintigraphy 13120) A patient receives both 3 mCi of 201 Tl chloride and 5 mCiof 99m Tc pertechnetate, and pinhole images of the neckare taken after each administration. If the pertechnetateimage is subtracted from the 201 Tl image, the activitythat remains represents:a. thyroidb. parathyroidc. salivary glandsd. hypothalamuse. non-functioning thyroid tissue21) The salivary glands may be imaged using:a. 3 mCi of 201 Tlb. 5 mCi of 99m Tc sestamibic. 5 mCi of 99m Tc pertechnetated. 200 µCi of 123 I sodium iodide22) Which of the following describes delayed imagesat 2–3 hours after injection of 99m Tc sestamibi?a. persistent activity in the normal thyroid withcomplete washout of activity in the parathyroidb. persistent activity in parathyroid adenomas,and decreased activity in the thyroid relative to earlyimagesc. persistent activity in hyperfunctioning thyroidtissue and no activity in the parathyroid or salivaryglandsd. activity in the salivary glands and normal parathyroidtissue23) A hot nodule on a thyroid image will most likely bebenign.a. trueb. false