Nucmed reviewer (part 2)

99mTc PYP

1. Imaging agent for skeleton and myocardial infarction

Multiple focal hotspots located in consecutive ribs

2. Rib fractures often show up as

Free pertechnetate

3. Gastric and thyroid activity on a bone scan signals the presence of

Converging

4. Which of the following collimators will magnify an image?

It does not have to be prepared each day

5. Advantages of using a 57Co sheet source over a fluid-filled flood source with 99mTc added include

Improves

6. What happens to image resolution as the distance between a patient and a parallel-hole collimator decreases?

Does not change

7. What happens to image size as the distance between a patient and a parallel-hole collimator decreases?

Scitillation Crystals

8. What part of an imaging system emits light when it has absorbed a photon?

Do not contribute to the final image

9. Most of the photons emitted from the radiopharmaceutical which has been administered to a patient

Pinhole

10. To obtain high-resolution images of a small organ, gland, or joint, which collimator will be most useful?

(septal penetration -photon scatter in the patient -increased patient to collimator distance)

All the above

11. Which of the following degrade images?

Ga-67

12. A camera with three pulse height analyzers will be most useful for imaging

Geiger-Muller counter

13. Which of the following would be used to perform a survey of an area in which a small amount of radioactivity is expected to be present?

Remove and store the clothes until they decay to background

14. In the event of a spill of 99mTc to clothes, one should immediately

Cover the area with absorbent paper and restrict access around it

15. If a radiopharmaceutical is spilled on the floor, the first priority is to

If you double the distance from the source of activity, you reduce exposure to 25% of the original intensity.

16. The inverse square law, in words, says

Have the visitor sit or stand as far as possible from bedside.

17. What is the best way to decrease the radioactive dose to visitors if a patient is surveyed to emit 3 mR/h at bedside?

Gloves

18. Which of the following should be used when administering an intravenous pharmaceutical to a patient?

By performing a wipe test

19. Which of the following is the most effective means of measuring low levels of removable radiation?