TEST BANK FOR RADIOLOGIC SCIENCE FOR
TECHNOLOGISTS 13TH EDITION BY BUSHONG AND
SHIELDS |ALL CHAPTERS | QUESTIONS & 100%
VERIFIED ANSWERS AND RATIONALES | GRADED A+
,CHAPTER 1: RADIATION PHYSICS AND PRODUCTION
1. Which subatomic particle is ejected from the atom during X-
ray production? A. Neutron
B. Proton
C. Electron
D. Positron
Answer: C
Rationale: X-rays are produced when high-speed electrons strike a target, and
electron interactions result in photon emission.
2. Which component of the X-ray tube focuses electrons onto the target?
A. Anode
B. Cathode filament
C. Focusing cup
D. Glass envelope
Answer: C
Rationale: The focusing cup directs electrons toward the anode target.
,3. Scenario: A radiographer adjusts the kVp from 70 to 90. How does this affect
the X-ray beam?
A. Decreases photon energy
B. Increases photon energy and penetration
C. Has no effect
D. Only changes tube current
Answer: B
Rationale: Higher kVp increases photon energy and penetration, affecting
contrast and patient dose.
4. What type of X-ray interaction occurs primarily in diagnostic imaging at
30–150 kVp?
A. Photoelectric effect and Compton scattering
B. Pair production
C. Photodisintegration
D. Nuclear fission
Answer: A
Rationale: Photoelectric effect and Compton scattering dominate in diagnostic
energy ranges, influencing image contrast and scatter.
, 5. Which X-ray photon characteristic determines its ability to penetrate
tissue?
A. Wavelength
B. Mass
C. Charge
D. Color
Answer: A
Rationale: Shorter wavelengths correspond to higher-energy photons that
penetrate tissue more effectively.
6. Which factor primarily controls X-ray quantity?
A. mA (tube current)
B. kVp (tube voltage)
C. Exposure time
D. Focal spot size
Answer: A
Rationale: Tube current (mA) determines the number of electrons striking the
target, thus controlling the number of X-ray photons produced.
TECHNOLOGISTS 13TH EDITION BY BUSHONG AND
SHIELDS |ALL CHAPTERS | QUESTIONS & 100%
VERIFIED ANSWERS AND RATIONALES | GRADED A+
,CHAPTER 1: RADIATION PHYSICS AND PRODUCTION
1. Which subatomic particle is ejected from the atom during X-
ray production? A. Neutron
B. Proton
C. Electron
D. Positron
Answer: C
Rationale: X-rays are produced when high-speed electrons strike a target, and
electron interactions result in photon emission.
2. Which component of the X-ray tube focuses electrons onto the target?
A. Anode
B. Cathode filament
C. Focusing cup
D. Glass envelope
Answer: C
Rationale: The focusing cup directs electrons toward the anode target.
,3. Scenario: A radiographer adjusts the kVp from 70 to 90. How does this affect
the X-ray beam?
A. Decreases photon energy
B. Increases photon energy and penetration
C. Has no effect
D. Only changes tube current
Answer: B
Rationale: Higher kVp increases photon energy and penetration, affecting
contrast and patient dose.
4. What type of X-ray interaction occurs primarily in diagnostic imaging at
30–150 kVp?
A. Photoelectric effect and Compton scattering
B. Pair production
C. Photodisintegration
D. Nuclear fission
Answer: A
Rationale: Photoelectric effect and Compton scattering dominate in diagnostic
energy ranges, influencing image contrast and scatter.
, 5. Which X-ray photon characteristic determines its ability to penetrate
tissue?
A. Wavelength
B. Mass
C. Charge
D. Color
Answer: A
Rationale: Shorter wavelengths correspond to higher-energy photons that
penetrate tissue more effectively.
6. Which factor primarily controls X-ray quantity?
A. mA (tube current)
B. kVp (tube voltage)
C. Exposure time
D. Focal spot size
Answer: A
Rationale: Tube current (mA) determines the number of electrons striking the
target, thus controlling the number of X-ray photons produced.
