3 Radiation Characteristics
CHAPTER REVIEW ANSWER KEY
Multiple Choice
1. a
Rationales:
b. mA controls the quantity of x-rays produced.
c. Exposure time controls the quantity of x–rays produced.
d. The source-to-film distance has an effect on the intensity of the beam.
5. a
Rationale: An increase in kilovoltage increases the quality of the beam. It will demonstrate greater
energy and shorter, more penetrating wavelengths.
Chapter 3: Radiation Characteristics 2
Multiple Choice (Continued)
13. a
Rationales:
b. High kilovoltage settings will result in a film with high density and low contrast.
17. d
Rationale: The Inverse Square Law deals with two variables: intensity of the x-ray beam and source–
to-film distance. According to the Inverse Square Law, as one variable increases, the other