Exam for Radiation Safety (Q&A)
1. Dental radiographs are NOT used for: detection of soft tissue trauma
2. Which radiation produces diagnostically useful radiographs?: primary
3. If the tubehead drifts, which component of the x-ray machine needs attention?:
extension arm
4. Which term describes light or white areas on the radiograph?: Radiopaque
5. X-ray wavelengths with the greatest energy and usefulness are: shorter
6. Which component of the x-ray machine functions in positioning the tubehead?:
Extension arm
7. Which is the heart of the x-ray generating system?: the x-ray tube
8. Which structure appears radioplaque on dental x-ray film?: metal restorations
9. Radiographic density is controlled by the: miliamperes (mA) setting
10. Damage from ionizing x-radiation to genetic cells: can affect future generations
11. Which tissue has the highest radiation sensitivity?: Small lymphocytes
12. A lead apron and a thyroid collar: must be used on all patients but are optional
for adults
13. Which controls the penetrating power of the x-ray beam?: Kilovoltage selector
14. The lead collimator: Restricts the size and shape of the primary beam
15. Chronic radiation exposure occurs when:: d. small doses of radiation are
received over a long time period
16. Damage to which cells could lead to genetic mutations?: Ovarian and sperm
17. The annual maximum permissible dose (MPD) of radiation for an occupational
worker is:: 5 rem
18. Which is NOT consistent with the ALARA principle?: Exposing radiographs
at predetermined intervals
19. When in storage, the lead apron should be: hung
20. Dental imaging:: detects conditions that might otherwise remain undetected
21. detects conditions that might otherwise remain undetected: use a film-holding
1. Dental radiographs are NOT used for: detection of soft tissue trauma
2. Which radiation produces diagnostically useful radiographs?: primary
3. If the tubehead drifts, which component of the x-ray machine needs attention?:
extension arm
4. Which term describes light or white areas on the radiograph?: Radiopaque
5. X-ray wavelengths with the greatest energy and usefulness are: shorter
6. Which component of the x-ray machine functions in positioning the tubehead?:
Extension arm
7. Which is the heart of the x-ray generating system?: the x-ray tube
8. Which structure appears radioplaque on dental x-ray film?: metal restorations
9. Radiographic density is controlled by the: miliamperes (mA) setting
10. Damage from ionizing x-radiation to genetic cells: can affect future generations
11. Which tissue has the highest radiation sensitivity?: Small lymphocytes
12. A lead apron and a thyroid collar: must be used on all patients but are optional
for adults
13. Which controls the penetrating power of the x-ray beam?: Kilovoltage selector
14. The lead collimator: Restricts the size and shape of the primary beam
15. Chronic radiation exposure occurs when:: d. small doses of radiation are
received over a long time period
16. Damage to which cells could lead to genetic mutations?: Ovarian and sperm
17. The annual maximum permissible dose (MPD) of radiation for an occupational
worker is:: 5 rem
18. Which is NOT consistent with the ALARA principle?: Exposing radiographs
at predetermined intervals
19. When in storage, the lead apron should be: hung
20. Dental imaging:: detects conditions that might otherwise remain undetected
21. detects conditions that might otherwise remain undetected: use a film-holding
