Digital Radiographic Artifact QA/QC – Bushong Chapter 21

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Across
  1. 1. : A graph showing the frequency of occurrence versus pixel value.
  2. 3. : Unwanted image pattern caused by scatter from behind the image receptor.
  3. 5. detection : Too many fields on one plate, such as three-on-one, confuses this detection algorithm.
  4. 6. : Leaving CR plates in an x-ray room can result in this unwanted exposure.
  5. 7. algorithm : Algorithm used by DR systems to match acquired histogram to stored reference histogram.
  6. 10. : Software correction that adjusts image data for dead pixels or rows.
  7. 11. : Failure to correctly identify exposure field boundaries results in a _______ analysis error.
  8. 12. : Type of compression that allows the image to be reconstructed exactly.
  9. 15. artifact : Physical damage to a CR plate from rough handling or scratches produces this visible effect.
  10. 16. : Process that adjusts image brightness and contrast based on histogram data.
  11. 17. : Technique that allows more than one exposure field on a single imaging plate.
  12. 19. : Imaging plates that have not been used for several days must undergo this before reuse.
Down
  1. 2. : Damaged or scratched imaging plate often requires _______ to restore performance.
  2. 4. : Misaligned exposure field edges can cause this kind of processing error.
  3. 6. : Software process that equalizes pixel response to a uniform x-ray beam.
  4. 8. : Mathematical process that replaces missing pixel data based on neighbors.
  5. 9. : Type of compression that permanently discards some image data.
  6. 13. : CR plates are sensitive to both background and _______ radiation.
  7. 14. artifacts : Artifacts that arise from technologist errors in positioning, collimation, or histogram selection.
  8. 18. image : Digital artifact caused by incomplete erasure of a CR imaging plate.