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Week 9 Other factor 24

Week 9 Other factor 24 - Other Factors that Impact Detail...

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Other Factors that Impact Detail The Relative Speed Value of the screens and film used. Screen and Film Contact Patient motion Processing of Image
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Relative Speed Value of Film System The higher relative speed value systems will produce less sharp images. The size of the grains on the film and phosphors are larger on high speed systems. This results in less detail. High speed systems need less radiation to produce the image. They have more quantum mottle.
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Cassettes Black border Kodak Lanex Regular Cassettes are 400 speed and used for spine and general radiography. Grey Border Kodak Lanex Fine Cassettes or Extremity Cassettes are 80 speed and used for non-Bucky small extremity films.
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Screen Film Contact The film must be in full contact with the intensifying screens. If the screens are worn, dirty of not in contact with the film, detail will be reduced.
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Screen Film Contact This is poor screen film contact.
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Poor Screen Contact There is a loss of detail in the thoracic and lumbar spine due to poor screen contact. This was a new cassette.
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Poor Screen Contact Note the blurry image in the spine but sharp image of the ribs. The screens were not in proper contact in the middle of the cassette due to a bow in the cassette back.
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Dirty or Damaged Screens Dirty or damaged screen will cause white spots on the image.
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Dirty or Damaged Screens The multiple white spots are the result of worn out screens. Improper cleaning is the likely cause. Never use alcohol to clean screens.
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Motion If the patient moves or fails to hold their breath, the image will be blurry.
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