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DARKROOM ,PROCESSING & Artifacts REVIEW

DARKROOM ,PROCESSING & Artifacts REVIEW. Types of Safelights. Kodak Wratten 6B – brownish red filter 7.5 to 15 watt bulb @ 4 feet above counter Kodak GBX – brighter (reddish) light is directed upwards White walls and dust free What type of film was amber filter used for?. SAFELIGHTS.

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DARKROOM ,PROCESSING & Artifacts REVIEW

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  1. DARKROOM ,PROCESSING& Artifacts REVIEW

  2. Types of Safelights • Kodak Wratten 6B – brownish red filter • 7.5 to 15 watt bulb @ 4 feet above counter • Kodak GBX – brighter (reddish) light is directed upwards • White walls and dust free • What type of film was amber filter used for?

  3. SAFELIGHTS

  4. Safelight distance?

  5. UNLOAD EXPOSED FILM

  6. FILM BIN - STORAGE

  7. What information Must be present For Legal reasons? FILM ID PRINTER

  8. PT ID LEGAL SHOULD NOT BE WRITTEN ON

  9. Film/IMAGE Identification • Pt name • Exam date & time • Pt x-ray number • Pt Birthday/DOB • Rt or Lt marker • Optional • Exam type • Dr. Name

  10. Position of film travel on feed tray may determine type of artifact What are the 3 classification?

  11. Processing FilmFloor model Table top (LAB) Close the lid Before leaving

  12. No longer in use in clinicsDARKROOM DAYLIGHTProcessor Processor

  13. NOTES ON PROCESSING • DEVELOPER • FIXER • WASH • DRY

  14. LOAD CASSETTE

  15. Stored on end prevents what type of artifact • Check expiration

  16. DEVELOPER FIXER WASH DRY WATER - SOLVENT

  17. Silver recovery

  18. silver recovery- see notes • A final consideration in film processing is silver recovery. • This term is the process by which silver in the processing chemicals is reclaimed and recycled by a unit, such as the one shown in the illustration. • This recycling is important for two reasons. • Silver has economic value in its recycled form and helps recover some of the cost of the unexposed film, which is expensive, in part, because of the silver in it. • Secondly, federal regulations require that heavy metals like silver be reclaimed from waste solutions before they are disposed of, to prevent pollution of the environment.Roughly half the silver in the film ends up dissolved in the fixer in the automatic processor. Different kinds of silver recovery units are used to process the used fixer to recover the silver.

  19. List the 3 types of silver recovery systems

  20. Metallic, Electyolytic & Chemical

  21. “FILM” & IMAGE ARTIFACTS RT 244 REV 11/09

  22. ARTIFACTS:AN UNWANTED DENSITYON THE FILM Can be a PLUS density (dark ) or MINUS density (LIGHT) http://www.xray2000.co.uk/

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

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

  25. PATHOLOGY ?

  26. pneumonia

  27. Pathology?

  28. Progressive massive fibrosis

  29. SCOLIOSIS

  30. GRIDS CAN LEAVE LINES ON THE IMAGE

  31. POOR DETAIL GOOD DETAIL

  32. Lack of contact between film and cassette can cause “blurring” of the image

  33. When there is a space between the contact of the film to the intensifying screens, a larger amount of light is allowed to reach the film – causing “more density” on fim

  34. POOR SCREEN CONTACT

  35. Patient motion

  36. Blurring of image due to patient movement during exposure.

  37. Artifact

  38. Line caused from dirt collected in a CR Reader CR image – NEW IMAGE

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