Certification Exam: Radiation Safety

Question 1 of 10

What is the "Three Pillars of Protection" in radiation safety?

A) Time, Distance, and Shielding B) Gloves, Goggles, and Aprons C) Lead, Steel, and Concrete D) Training, Testing, and Tracking

Question 2 of 10

Where should a personal dosimeter be worn for the most accurate reading?

A) In your pocket B) On your wrist C) At the collar, outside of the lead apron D) At the waist, under the apron

Question 3 of 10

Why should you NEVER fold a lead apron?

A) OSHA only allows rolling B) It causes the internal lead lining to crease and crack, creating "hot spots" C) It makes it look messy D) It makes it too heavy

Question 4 of 10

What is "Collimation" in radiation safety?

A) A type of lead apron B) Narrowing the X-ray beam to only hit the area of interest C) Taking the same X-ray twice D) Cleaning the machine

Question 5 of 10

How often must lead aprons and thyroid shields undergo a fluoroscopic inspection?

A) Once a year (annually) B) Only when they look dirty C) Every month D) Every 5 years

Question 6 of 10

A patient with implanted radioactive "seeds" for cancer treatment:

A) Is not a radiation risk B) Is only radioactive in the dark C) Requires a "Chain of Custody" and provides a potential exposure risk to staff D) Should be handled with bare hands

Question 7 of 10

What does the "Inverse Square Law" mean for your safety?

A) You should stand as close as possible B) Radiation increases with distance C) Doubling your distance from the source reduces your exposure to 1/4th D) Distance doesn't matter as long as you wear lead

Question 8 of 10

What is the difference between Deterministic and Stochastic effects?

A) They are the same thing B) Deterministic are random; Stochastic have a threshold C) Deterministic (like burns) have a threshold; Stochastic (like cancer) have no safe threshold D) Stochastic effects only happen to patients

Question 9 of 10

What is the cornerstone principle of radiation safety in 2026?

A) ASAP B) ALARA (As Low As Reasonably Achievable) C) OSHA D) NIST

Question 10 of 10

Which part of the body is most at risk for radiation-induced cataracts?

A) The fingernails B) The skin C) The thyroid D) The lens of the eye