A Test 3 _RADT_A161 Fundamentals

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McCrae
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291708
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A Test 3 _RADT_A161 Fundamentals
Updated:
2014-12-15 23:37:49
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A Test 3
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  1. Filtration of the x-ray beam increases x-ray quantity
    True
    False
    False
  2. Penetrability is an expression of x-ray quality and conveys the ability of x-rays to pass through tissues.
    True
    False
    True
  3. Which factors affect both x-ray quality and x-ray quantity?  
    (1) Distance
    (2) Filtration
    (3) kVp
    2 and 3 only
  4. Which factors affect x-ray quantity?  
    (1) kVp
    (2) Filtration
    (3) mAs
    1, 2, and 3
  5. Which term is used interchangeably with x-ray quantity?
    Radiation exposure
  6. X-ray quality decreases as kVp increases.
    True
    False
    False
  7. Large differences in the effective atomic number of adjacent tissues result in:

     
    •  
  8. The blurred region on the radiograph over which the technologist has little control is:
    Focal-spot blur
  9. The factors that affect magnification are:

    OID and SOD 
    OID and SID
    OID and SID
  10. The formula SID ÷ SOD is used to calculate:
    Magnification factor
  11. The only factor that affects subject contrast that is under radiographer control is:
    kVp
  12. The shape, position, and thickness of an object affect the:
    Distortion
  13. The type of distortion caused by elongation or foreshortening is:
    Shape distortion
  14. What is the effect on radiographic image quality if focal-spot size is increased?
    Increased focal-spot blur
  15. Which affect the quality of a radiographic image?
    (1) Patient positioning
    (2) Selection of technique factors
    1 and 2
  16. Which will increase radiographic magnification?
    Increase in OID
  17. Which, when increased, will increase radiographic image quality?  
    (1) Spatial resolution
    (2) Contrast resolution
    1 and 2
  18. Factors used to describe radiographic image quality include:
    (1) Optical density
    (2) Contrast
    (3) Detail
    1, 2, and 3
  19. If an x-ray image is underexposed, which technique change would be best to obtain optimal OD on the repeated image?
    Double mAs
  20. In order to minimize distortion in a radiographic image, the:

    The exposure time should be kept as short as possible
    Part is positioned parallel to the image receptor
    Part is positioned parallel to the image receptor

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