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

ALARA stands for As Low As Reasonably Achievable and is the foundational principle guiding all radiation protection practices.

Question 2

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

Accepted Answer

50 mSv (5 rem)

Answer

The NCRP recommends a maximum annual occupational effective dose limit of 50 mSv (5 rem) for radiation workers.

Question 3

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

Accepted Answer

TLD badge

Answer

Thermoluminescent dosimeters (TLDs) use lithium fluoride crystals that trap electrons when exposed to radiation; heating releases the energy as measurable light.

Question 4

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

Accepted Answer

Time, distance, and shielding

Answer

Time, distance, and shielding are the three cardinal principles of radiation protection for workers.

Question 5

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

Accepted Answer

0.5 mm Pb

Answer

The minimum recommended lead equivalency for protective aprons used during fluoroscopy is 0.5 mm of lead.

Radiography Exam Practice Test

Radiography Exam Practice Test

Radiography Exam Radiation Protection and Safety