Nucmed reviewer (part 3)

Gray

1. Which of the following measures absorbed doses?

As low as reasonably achievable

2. The philosophy of the ALARA program is to keep the radiation dose:

Geometry of the container holding the source of radiation

3. All of the following are critical factors in keeping radiation exposure to a minimum except:

Are at a negative pressure compared to surrounding rooms

4. Gaseous radiopharmaceuticals may only be used in rooms that:

Geiger-Mueller Counter

5. Tools for measuring personal exposure to radiation include all of the following except:

By electron capture

6. How does 201Tl decay?

To reduce the valence state of 99mTc

7. What is the role of the stannous ion in the preparation of pharmaceuticals labeled with 99mTc?

Sulfur colloid

8. Which of the following is boiled during preparation?

Presence of 99Mo in 99mTc eluate

9. Which of the following is an example of radionuclidic impurity?

Presence of free 99mTc in a preparation of 99mTc sulfur colloid

10. Which of the following is an example of radiochemical impurity?

This depends on the solvent and strip used.

11. What is indicated by the front of an instant thin layer chromatography (ITLC) strip?

Liver uptake

12. If excessive aluminum is present in 99mTc eluate, which of the following would be expected on a bone scan?

Edge packing

13. On an intrinsic field uniformity image, the area of increased activity around the image is called:

Both (b) and (d)

14. Which of the following radiopharmaceuticals is not used to study the heart?

99mTc sulfur colloid

15. Bone marrow imaging is performed using:

99mTc MAG3

16. Which radiopharmaceutical is best to use for renal scanning if a determination of effective renal plasma flow is also desired?

(201Tl- 123I- Tc99 sestamibi)

All of the above

18. Which are used for the imaging of neoplasms?

I123 sodium iodide

17. Which of the following may be used for thyroid uptake and scanning?

Increases spatial resolution

19. Increasing the matrix size of a SPECT acquisition:

99mTc DTPA

20. Which radiopharmaceutical is not commonly used for brain perfusion imaging with SPECT?