2. Which radioisotope is primarily used for thyroid imaging and treatment? a) Iodine-123 b) Technetium-99m c) Gallium-67 d) Xenon-133 Answer: a) Iodine-123
3. The radioisotope used for myocardial perfusion imaging is: a) Technetium-99m Sestamibi b) Iodine-131 c) Fluorodeoxyglucose d) Thallium-201 Answer: a) Technetium-99m Sestamibi
4. Which radioisotope is used in PET imaging to assess metabolic activity? a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-131 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
5. The radioisotope used for lung ventilation studies is: a) Xenon-133 b) Technetium-99m c) Iodine-123 d) Fluorodeoxyglucose Answer: a) Xenon-133
6. The radioisotope used for evaluating bone metabolism is: a) Technetium-99m MDP b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MDP
7. For assessing cardiac function, which radioisotope is commonly used? a) Thallium-201 b) Iodine-131 c) Technetium-99m d) Fluorodeoxyglucose Answer: a) Thallium-201
8. The radioisotope used for liver imaging is: a) Technetium-99m sulfur colloid b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
9. Which radioisotope is used for brain imaging to evaluate cerebral blood flow? a) Technetium-99m HMPAO b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m HMPAO
10. The radioisotope used for detecting infections and tumors is: a) Gallium-67 b) Technetium-99m c) Iodine-123 d) Fluorodeoxyglucose Answer: a) Gallium-67
11. Which radioisotope is used for thyroid ablation therapy? a) Iodine-131 b) Technetium-99m c) Gallium-67 d) Xenon-133 Answer: a) Iodine-131
12. The radioisotope used in a gastric emptying study is: a) Technetium-99m sulfur colloid b) Iodine-123 c) Fluorodeoxyglucose d) Gallium-67 Answer: a) Technetium-99m sulfur colloid
13. For evaluating renal function, which radioisotope is used? a) Technetium-99m MAG3 b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MAG3
14. The radioisotope used for adrenal imaging is: a) Technetium-99m MIBG b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MIBG
15. Which radioisotope is used for assessing bone marrow disorders? a) Technetium-99m b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m
16. The radioisotope used for lymphoscintigraphy is: a) Technetium-99m sulfur colloid b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
17. The radioisotope used for evaluating pulmonary embolism is: a) Technetium-99m b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m
18. For evaluating myocardial viability, which radioisotope is commonly used in PET? a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
19. The radioisotope used in a CSF shunt study is: a) Technetium-99m DTPA b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m DTPA
20. The radioisotope used in a parathyroid scan is: a) Technetium-99m Sestamibi b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m Sestamibi
21. Which radioisotope is used for bone density studies? a) Technetium-99m b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m
22. The radioisotope used for evaluating myocardial stress tests is: a) Thallium-201 b) Iodine-123 c) Technetium-99m d) Fluorodeoxyglucose Answer: a) Thallium-201
23. The radioisotope used for thyroid function tests is: a) Iodine-123 b) Technetium-99m c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Iodine-123
24. The radioisotope used in a bone scan to detect metastases is: a) Technetium-99m MDP b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MDP
25. The radioisotope used in evaluating myocardial perfusion at rest is: a) Technetium-99m Sestamibi b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m Sestamibi
26. The radioisotope used for hepatic imaging is: a) Technetium-99m sulfur colloid b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
27. For evaluating gastric emptying, which radioisotope is used? a) Technetium-99m sulfur colloid b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
28. The radioisotope used for imaging infection or inflammation is: a) Gallium-67 b) Technetium-99m c) Iodine-123 d) Fluorodeoxyglucose Answer: a) Gallium-67
29. Which radioisotope is used in PET imaging for brain studies? a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
30. The radioisotope used for adrenal imaging is: a) Technetium-99m MIBG b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MIBG
31. The radioisotope used for a shunt study in the brain is: a) Technetium-99m DTPA b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m DTPA
32. The radioisotope used for imaging the thyroid gland is: a) Iodine-123 b) Technetium-99m c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Iodine-123
33. For evaluating bone marrow function, the radioisotope used is: a) Technetium-99m sulfur colloid b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
34. The radioisotope used for myocardial stress testing is: a) Thallium-201 b) Iodine-123 c) Technetium-99m d) Fluorodeoxyglucose Answer: a) Thallium-201
35. The radioisotope used for assessing gallbladder function is: a) Technetium-99m b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m
36. The radioisotope used for evaluating lung ventilation is: a) Xenon-133 b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Xenon-133
37. The radioisotope used for evaluating gastrointestinal bleeding is: a) Technetium-99m b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m
38. The radioisotope used for assessing renal perfusion is: a) Technetium-99m MAG3 b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MAG3
39. The radioisotope used for evaluating bone metastases is: a) Technetium-99m MDP b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m MDP
40. The radioisotope used for evaluating thyroid nodules is: a) Iodine-123 b) Technetium-99m c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Iodine-123
41. The radioisotope used for detecting infections in the body is: a) Gallium-67 b) Technetium-99m c) Iodine-123 d) Fluorodeoxyglucose Answer: a) Gallium-67
42. The radioisotope used for evaluating brain tumors is: a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
43. The radioisotope used in the evaluation of the parathyroid glands is: a) Technetium-99m Sestamibi b) Iodine-131 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m Sestamibi
44. The radioisotope used for evaluating the gastrointestinal tract is: a) Technetium-99m sulfur colloid b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
45. The radioisotope used in PET scans to measure metabolic activity is: a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
46. The radioisotope used for evaluating myocardial viability is: a) Fluorodeoxyglucose (FDG) b) Technetium-99m c) Iodine-123 d) Gallium-67 Answer: a) Fluorodeoxyglucose (FDG)
47. The radioisotope used for assessing liver function is: a) Technetium-99m sulfur colloid b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m sulfur colloid
48. The radioisotope used for detecting bone infections is: a) Technetium-99m b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: c) Gallium-67
49. The radioisotope used for evaluating cardiac perfusion is: a) Technetium-99m Sestamibi b) Iodine-123 c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Technetium-99m Sestamibi
50. The radioisotope used for imaging the thyroid gland and detecting hyperthyroidism is: a) Iodine-123 b) Technetium-99m c) Gallium-67 d) Fluorodeoxyglucose Answer: a) Iodine-123
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