3-Jolene
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| 1. What is meant by the latent image? | image on exposed film before processing.
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| 2. What is meant by a visible image? | exposed, processed film that can be viewed with proper lighting
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| 3. Which film is faster, E or D? | E
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| 4. What is meant by film speed? | amount of exposure (time) required to expose the film
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| 5. What determines film speed? | size/shape of silver halides; thickness of emulsion; radiosensitizing dyes
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| 6. Which part of the film is sensitive to exposure? | silver halides in the emulsion
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| 7. List all of the things that can expose film. | x-ray, light, scatter radiation, heat, age, pressure, chemicals, static electricity
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| 8. What happen to the radiographic image if exposed to extraneous light during processing? | fogged film
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| 9. What is the result of leaving films in the developer too long? | darker image (higher density image) - may turn completely black
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| 10. What is the result of leaving films in the fixer too long? | lighter image (lower density image) - film may be completely cleared
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| 11. What is the ideal time and temperature for manual development? | 68 degrees Fahrenheit for 4.5 - 5 minutes
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| 12. What is the total time for fixing films using manual processing? | 10 minutes
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| 13. What is the purpose for rinsing films between developing and fixing? | remove excess developer and stop the developing process
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| 14. Why are films not rinsed after development in automatic processing? | rollers remove the developer
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| 15. What are the special qualities of automatic processing chemicals? | control swelling of emulsion; more concentrated; more preservatives
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| 16. What information should be placed on the rack for manual processing? | patient name and date of exposure (usually name of prescribing dentist, also)
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| 17. What is a coin test? | open film; place coin on top; expose to safelight or no light for 5 minutes; process; view
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| 18. What is the purpose of the coin test? | test for extraneous light exposure
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| 19. What is a step wedge? | aluminum or other metal of varying thicknesses built in steps
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| 20. How is the step wedge used in a quality assurance program? | expose quality assurance and checker films to test chemicals
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| 21. What is the purpose for quality assurance of the processing chemicals? | produce optimal patient radiographs
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| 22. What is replenishment? | remove some old chemicals; replace with new solutions
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| 23. What is the minimum recommendation for frequency of replenishment? | daily
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| 24. What is able to expose dental film? | x-ray, light, scatter radiation, heat, age, pressure, chemicals, static electricity
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| 25. What happens to silver halides during developing? | exposed ones darken
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| 26. What happens to silver halides during fixing? | unexposed/undeveloped silver halides are removed
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| 27. How will films be affected if the developing solution is too hot? | darken
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| 28. How will films be affected if the developing solution is too cold? | underdeveloped/low density/too light in appearance.
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| 29. What type of darkroom door allows for people to enter and exit without light entering? | revolving
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| 30. What are the specifications for a safelight that is safe for both intraoral and extraoral film? | 4 feet from work surface; 15 watt bulb; GBX-2 filter
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| 31. How would you test a daylight loading processor for light safeness? | coin test
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| 32. What type of Kodak film has a purple color on the backside? | duplicating
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| 33. What is the purpose for lead foil in the film packet? | absorb backscatter radiation and prevent film fog
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| 34. What is the new speed of film for Kodak film? | F
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| 35. What would you do to darken the image when making a duplicate film? | expose it to less light during duplication
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| 36. What are the specifications for film storage? | 50 - 70 degrees Fahrenheit; 30-50% relative humidity; use before expiration date
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| 37. What does it mean when an image results from a coin test film? | light exposure has occurred
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Created by:
Sandys
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