PACS

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Across
  1. 2. The distance between pixels.
  2. 3. Type of x-ray conversion where x-ray photons are absorbed by the coating material and instantly turned into an electric signal.
  3. 6. Lag: When an image is taken before the detector releases the entire signal from the previous image, and a faint image of the previous exposure is shows up on the new image (2 words).
  4. 7. Grid refers to the number of grid lines per centimeter or per inch.
  5. 9. depth: Define the shade of gray of each pixel (2 words).
  6. 11. Post processing manipulation that adds a black background to the original collimation edges.
  7. 12. High resolution image plates have better
  8. 14. Factor: The ratio of sensing area of the pixel to the area of the pixel itself (2 words).
  9. 17. Resolution: The amount of detail present in any image (2 words).
  10. 21. A device that represents changing values as continuously variable physical quantities.
  11. 22. Materials that absorb x-rays and result in an electrical charge.
  12. 23. The light laser energizes trapped electrons and allows them to escape the active layer.
  13. 25. In cassette based PSP systems; used to match image information to patient.
  14. 28. The layer of material in an imaging plate absorbs and reduces static electricity.
  15. 29. layer: Active layer in imaging plate that "traps" electrons during exposure (2 words).
  16. 30. This reduces the area of irradiation where scatter is created and results in increased contrast because there is less scatter.
  17. 31. Detector: Once the x-rays are converted into electrons, they are stored here (2 words).
Down
  1. 1. Picture element
  2. 4. The layer of an imaging plate sends light in a forward direction when released in the cassette reader.
  3. 5. The gives energy to trapped electrons when fed into the reader.
  4. 7. Scan: The movement of the laser across the imaging plate is known as direction (2 words).
  5. 8. Calibration: This is used to correct flaws in the detector (2 words).
  6. 10. The process where the laser scans across the imaging plate several times.
  7. 13. A wavy artifact caused by grid lines.
  8. 15. Are phosphors that produce light when absorbing x-rays.
  9. 16. When the lead strips of a grid are angled to coincide with the divergence of the x-ray beam.
  10. 18. selenium: Photoconductors are typically made of (2 words).
  11. 19. scintillation layers produce more scattered light and decrease the efficiency of the detector.
  12. 20. Type of x-ray conversion where x-ray photons are converted to light then into an electrical signal.
  13. 24. An example of this is when adhesive tape that used to attach a marker to the cassette leave residue.
  14. 26. A graph of the numerical tone values of an x-ray.
  15. 27. When the data is on the , the technologist can review and manipulate it.
  16. 29. Correct selection is important for the proper conversion to take place after exposure.