Density and Contrast

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Author:
Anonymous
ID:
234
Filename:
Density and Contrast
Updated:
2009-10-13 15:24:55
Tags:
image production
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Description:
density and contrast
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  1. In relation to density, doubling your time does what?
    doubles your density (makes darker)
  2. In relation to density, reducing your time by half does what?
    decreases your density by half (makes lighter)
  3. In relation to density, doubling your mA does what?
    doubles the density (makes darker)
  4. In relation to density, reducing your mA by half does what?
    cuts density in half (makes lighter)
  5. In relation to density, increasing kVp by 15% does what?
    doubles the density (makes darker)
  6. In relation to density, reducing kVp by 15% does what?
    cuts the density in half (makes lighter)
  7. In relation to density, decreading SID by 25%(inverse square law) does what?
    increases the density (makes darker)
  8. In relation to density, increasing SID by 25%(inverse square law) does what?
    decreases density (makes lighter)
  9. In relation to density, doubling IR speed does what?
    doubles density (makes darker)
  10. In relation to density, reducing IR speed by half does what?
    decreases density by half (makes lighter)
  11. In relation to density, decreasing field size does what?
    decreases density (makes lighter)because it decreases the volumn of tissue
  12. In relation to density, increasing field size does what?
    increases density (makes darker)
  13. In relation to density, changing focal spot size from large to small does what?
    Has no effect it only affects detail(blur)
  14. In relation to density, increasing tissue thickness does what?
    decreases density because of absorption (makes lighter)
  15. In relation to density, increasing filtration does what?
    decreases density (makes lighter)
  16. In relation to density, increasing OID does what?
    decreases density (makes lighter)
  17. In relation to density, grid usages does what?
    decreases density (makes lighter)
  18. In relation to contrast, increasing kVp does what?
    decreases contrast
  19. In relation to contrast, decreasing kVp does what?
    incrases contrast
  20. In relation to contrast, grid usage does what?
    increases contrast
  21. In relation to contrast, intensifying screen usage does what?
    increases contrast, as speed increases contrast increases
  22. In relation to contrast, increasing OID does what?
    increases contrast
  23. In relation to contrast, decreasing field size does what?
    increases contrast
  24. In relation to contrast, increasing field size does what?
    decreases contrast
  25. In relation to contrast, increasing filtration does what?
    decreases contrast because it removes the lower end of the spectrum and removes whites

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