and Quality Assurance Questions and
Answers Latest Update 100% Pass
Which of the following is a benefit of using a higher bit depth in digital imaging?
✔✔A) More shades of gray for better contrast resolution
B) Lower patient dose
C) Increased image noise
D) Reduced image detail
Which device prevents excessive radiation exposure in fluoroscopy?
✔✔A) Automatic brightness control (ABC)
B) Grid
C) Bucky
D) Phototimer
Which type of monitor provides the highest spatial resolution for medical imaging?
✔✔A) Monochrome high-resolution monitor
B) Standard LCD monitor
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,C) Color television screen
D) CRT monitor
Which of the following is a potential consequence of excessive exposure in digital radiography?
✔✔A) Dose creep
B) Image distortion
C) Increased spatial resolution
D) Reduced contrast
What effect does a longer exposure time have on an image?
✔✔A) Increases motion blur
B) Improves spatial resolution
C) Reduces scatter radiation
D) Enhances image contrast
Which factor primarily controls subject contrast in an X-ray image?
A) mAs
✔✔B) kVp
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,C) SID
D) OID
Which of the following factors primarily controls X-ray beam quality?
A) mAs
B) Focal spot size
✔✔C) kVp
D) SID
Which material is commonly used for the target in an X-ray tube?
A) Copper
B) Lead
C) Aluminum
✔✔D) Tungsten
What is the purpose of the focusing cup in an X-ray tube?
✔✔A) Directs electrons toward the anode
B) Increases X-ray energy
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, C) Reduces scatter radiation
D) Enhances image contrast
Which of the following interactions is responsible for X-ray production?
✔✔A) Bremsstrahlung and characteristic radiation
B) Compton scattering and pair production
C) Photoelectric effect and Compton scattering
D) Coherent scattering and photodisintegration
What happens when the rotor button is pressed before an X-ray exposure?
A) The anode stops rotating
✔✔B) The filament heats up and the anode rotates
C) The exposure immediately starts
D) The collimator opens automatically
Which of the following affects spatial resolution the most?
A) High kVp
✔✔B) Small focal spot size
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