Acquisition and evaluation BOOK

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Mariyah
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306255
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Acquisition and evaluation BOOK
Updated:
2015-08-10 21:33:52
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  1. Darkness on the Radiographic  Image is defined as _____
    Density
  2. The Primary 2 controlling Factors for Density are ____
    mAs and Window Level
  3. Which of the following describes the relationship between mAs and Density

    1- Density is directly proportional to mAs
    2- Density is inversely proportional to mAs
    3- Density is directly proportional to mAs *
    1- Density is directly proportional to mAs
  4. The # of electrons boiled off the cathode & consistently the # of X-rays produced Are controlled by _____
    mAs
  5. The law stating that any combinations of mAs and time that produce the same mAs value will produce the same radiographic density is what Law
    Reciprocity Law
  6. Differences in density on a Radiograph describe ______
    Contrast
  7. The relationship between kVp and dencity is
    Direct but not proportional
  8. What governs the relationship between SID and density
    Inverse square law
  9. Differential absorption of the x-ray beam is a function of ______
    Photoelectric Interactions
  10. What effect does a grid have on Contrast
    Increases it
  11. As Beam filtration is increased contrast is
    Decreased
  12. Geometric representation of the part being Radiographed is called
    Recorded Detail
  13. An electronical switch used on flat panel detectors is called ____
    TFT Thin Film Transistor
  14. Distortion that occurs when the
  15. Distortion that occurs when the x-ray beam is angles against the long axis of the part is called
    Foreshortening
  16. Distortion that occurs when the x-ray beam is angles with the long axis of the part is called
    Elongation
  17. Quality assurance and maintenance of CR cassettes including cleaning and inspections should be done how often
    every 3 months
  18. A software function that allows evening of the brightness of an image is called
    Smoothing
  19. Exposure Technique in digital imaging may be adjusted by doing what
    lowering kVp
  20. Inappropriate collimation causes what error
    Histogram analysis error

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