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Imaging Principles questions with 100% correct answers $15.99   Add to cart

Exam (elaborations)

Imaging Principles questions with 100% correct answers

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  • Course
  • Radiology imaging
  • Institution
  • Radiology Imaging

Imaging Principles questions with 100% correct answers

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  • August 8, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Radiology imaging
  • Radiology imaging
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BravelRadon
Imaging Principles

Portrait (lengthwise) - correct answer ✔✔long axis of body part is aligned w/ longest dimension of the IR



Landscape (crosswise) - correct answer ✔✔broader lateral borders



exposure latitude - correct answer ✔✔The range of exposure over which a film produces an acceptable
image.



kilovoltage (kV) - correct answer ✔✔Controls the energy (penetrating power) of the x-ray beam.




Also referred to as Kilovoltage Peak (kVp): maximum electrical potential used to create the x-ray photons
within x-ray tube.



Milliamperage (mA) - correct answer ✔✔Controls the quantity or number of x-rays produced



Exposure time (ms) - correct answer ✔✔controls the duration of the exposure ; usually expressed in
milliseconds



4 quality factors of film-based images - correct answer ✔✔density ; contrast ; spatial resolution ;
distortion



Density - correct answer ✔✔image quality factor (film-based)



amount of "blackness" on the processed radiograph. (high density, less light)



Density controlling factors - correct answer ✔✔primary controlling factor.mAs: quantity of x-rays
produced & duration of exposure

, kV: controls energy of x-ray beam



influencing factors of density - correct answer ✔✔Source image receptor distance (SID): distance of x-ray
source from IR .



If sid is doubled at IR, the intensity of x-ray beam is reduced to one-fourth, which then reduces the
radiographic density to 1/4



anode heel effect - correct answer ✔✔intensity of radiation emitted from the cathode end of the x-ray
tube is greater than that emitted at the anode end



(more intense under cathode [greater kV])



application of anode heel effect - correct answer ✔✔thicker parts at cathode



Compensating filters - correct answer ✔✔filter out a portion of the primary beam toward the thin or less
dense part of the body that is being imaged



types of compensating filters - correct answer ✔✔- wedge filter

- trough filter

-boomerang filter



wedge filter - correct answer ✔✔a type of compensating filter used to even out densities (placed
towards the least dense part)



mounts on the collimator



ex: AP foot, AP thoracic spine, axiolateral hip

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