221-2 Crossword

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Across
  1. 3. Selecting the proper ________ and position is important for the proper conversion.
  2. 6. Systems erase the plate by _______ it with light to remove any trapped electrons left after the initial plate reading.
  3. 7. The assignment of a numeric value to each light photon
  4. 10. Has a bar code or sticker that matches image information with ______ _______ & information.
  5. 14. Thin, tough, clear plastic protects the phosphor layer.
  6. 18. In PSP (photostimulable phosphor) imaging, the ________ X-ray beam interacts with barium fluorohalide crystals in the imaging plate.
  7. 19. This is created when photons move in the same direction.
  8. 20. was selected according to the number of photons required for the body part to be imaged.
  9. 23. Laser scans across the imaging plate multiple times.
  10. 24. Absorbs and reduces static electricity
  11. 25. The relationship between the height of the lead strips and the space between the lead strips.
  12. 26. Some newer plates have a color layer between the active and support layers that absorbs stimulating light and reflects emitted light..
Down
  1. 1. Poor light production creates a grainy image.
  2. 2. The ________ in the reader direct the beam to the imaging plate surface.
  3. 4. Contains photostimulable phosphor that “traps” electrons during exposure
  4. 5. Based on simultaneous stimulation of the imaging plate one line at a time.
  5. 8. Use one laser point at a time to scan the plate and convert the image into a digital signal.
  6. 9. directs light forward, may be black to limit light spread, and reduces resolution.
  7. 11. The reader scans the plate with a red light in a _________ pattern (zig zag)
  8. 12. Using __________ and a grid helps reduce scatter from larger tissue volumes, which improves image contrast.
  9. 13. Backed by aluminum or lead to absorb ________ x-ray photons
  10. 15. Digital image contrast is no longer dependent on kVp- __________ is determined by computer processing
  11. 16. A postexposure image manipulation that adds a black background to the original collimation edges
  12. 17. are important because they reduce scatter radiation
  13. 21. Semi-rigid material that provides strenght
  14. 22. Soft polymer that protects the back of the cassette