Radiography Exam Radiation Protection and Safety

Question 1

Which principle of radiation protection is described as keeping radiation exposure As Low As Reasonably Achievable?

Accepted Answer

ALARA

Answer

NCRP

Answer

MPD

Answer

HVL

Question 2

The recommended annual occupational effective dose limit for radiation workers in the United States is:

Accepted Answer

50 mSv (5 rem)

Answer

100 mSv (10 rem)

Answer

20 mSv (2 rem)

Answer

150 mSv (15 rem)

Question 3

Which type of radiation monitoring device uses lithium fluoride crystals to measure accumulated radiation dose?

Accepted Answer

TLD badge

Answer

Film badge

Answer

Pocket dosimeter

Answer

Geiger-Müller counter

Question 4

To reduce occupational radiation exposure, a radiographer should use which combination of protective strategies?

Accepted Answer

Time, distance, and shielding

Answer

Collimation, filtration, and kVp

Answer

mAs, kVp, and SID

Answer

Grids, screens, and cassettes

Question 5

What is the minimum recommended lead equivalency for protective aprons used in fluoroscopy?

Accepted Answer

0.5 mm Pb

Answer

0.25 mm Pb

Answer

1.0 mm Pb

Answer

0.1 mm Pb

Question 6

Which inverse square law calculation correctly determines the new dose rate when a radiographer moves from 1 meter to 3 meters from the radiation source?

Accepted Answer

1/9 of the original dose rate

Answer

1/3 of the original dose rate

Answer

3 times the original dose rate

Answer

9 times the original dose rate