Radiation Protection (Test) Cwilliamstulsa |85 Questions| With Correct Answers.

What is the major difference between x-rays and gamma rays? {Ans: source of origin}The x-ray-matter interactions that cause ionization of the irradiated matter include: 1. coherent 2. phototelectric 3. compton {Ans: 2 & 3}How does filtration of the primary beam affect patient dose? {Ans: it increases average beam energy, also known as hardening the beam}The formula for calculating the cumulative whole-body effective dose equivalent limit is: {Ans: Age in years X 10 mSv (1 rem)}What is the SI (International System of Units) equivalency for radiation absorbed dose? {Ans: Gray}The traditional unit of radiation measurement used to indicate dose equivalent is the: {Ans: rem}The radiation protection philosophy that promotes the use of the least amount of radiation possible for medical imaging is termed: {Ans: ALARA}The minimum amount of lead equivalent required for a lead apron is {Ans: 0.25 mm}In general, what effect will an increase in photon energy have on the probability of a photoelectric interaction? {Ans: decreased probability}Metal filters are part of the personnel dosimeter called: {Ans: Film badge}If the tube housing is properly designed, the leakage radiation will never exceed the regulatory limit of: {Ans: 100 mR/hr at