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ARTIFACTS: AN UNWANTED DENSITY ON THE FILM

ARTIFACTS: AN UNWANTED DENSITY ON THE FILM. http://www.xray2000.co.uk/. Artifacts - Types. Processing Artifacts Exposure Artifacts Handling & Storage Artifacts. Processing Artifacts. Emulsion pickoff Chemical fog Guide-shoe marks Water marks Chemical spots

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ARTIFACTS: AN UNWANTED DENSITY ON THE FILM

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  1. ARTIFACTS:AN UNWANTED DENSITYON THE FILM http://www.xray2000.co.uk/

  2. Artifacts - Types • Processing Artifacts • Exposure Artifacts • Handling & Storage Artifacts

  3. Processing Artifacts • Emulsion pickoff • Chemical fog • Guide-shoe marks • Water marks • Chemical spots • Guide-shoe & roller scratches

  4. Developer Spots

  5. Water spot

  6. Discolored film due to hypo (fixer) retention. Chemicals not washed off – over time will turn film brown

  7. Scratch marks from rollers in automatic processor.

  8. Exposure Artifacts • Motion • Improper patient position • Wrong screen-film match • Poor film/screen contact • Double exposure • Warped cassette • Improper grid position

  9. Artifact

  10. Blurred image due to patient motion

  11. PATIENT ARTIFACT - JEWERLY

  12. Handling & Storage Artifacts • Light fog • Radiation fog • Static • Kink marks • Scratches • Dirty cassettes

  13. Crimping /cresent mark

  14. Double Exposure 2 exposures made on top of each other – from poor handling of cassettes

  15. Static electricity

  16. Dirt on screen mimicking a foreign object.

  17. Scratch marks from improper handling.

  18. Light fog

  19. Kink mark or nail pressure mark

  20. cast

  21. POOR SCREEN CONTACT

  22. Patient motion

  23. motion

  24. Double exposureChild

  25. Poorscreen contact

  26. Double exposure

  27. ?

  28. ?

  29. Pt clothing

  30. Hip replacement

  31. 2 chest tubes in the patient

  32. Patient swallowed batteries What size are they?

  33. PATHOLOGY NOT ARTIFACT

  34. Name & causeof this?

  35. scratches

  36. Digital image Mis- Registration error

  37. Roller marks from film stuck – then pulled from processor

  38. Hardware In cervical spine

  39. Dust in imaging plate can cause white marks on image Both in film/screen and computed radiography

  40. E E G MONITOR

  41. What do you See? 2 exposures

  42. Evaluating Images What do you think?

  43. See anythingwrong with this image?

  44. Contrast? What influences this? (kVp in f/s)

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