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Radiographic Film Artifacts

Radiographic Film Artifacts. DMI 50B Kyle Thornton. What Is An Artifact?. Any optical density that is not anatomy An unwanted density on the radiograph Interferes with diagnosis. There Are Three Time Periods In Which Artifacts Can Occur. During exposure During processing

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Radiographic Film Artifacts

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  1. Radiographic Film Artifacts • DMI 50B • Kyle Thornton

  2. What Is An Artifact? • Any optical density that is not anatomy • An unwanted density on the radiograph • Interferes with diagnosis

  3. There Are Three Time Periods In Which Artifacts Can Occur • During exposure • During processing • During film handling, prior to processing, loading cassette, or storing

  4. Exposure Artifacts • Poor screen-film contact • Improper use/positioning of a grid • Double exposure • Patient motion • Poor patient preparation • Clothing, jewelery, glasses, belts, etc.

  5. Processing Artifacts • Dirty Rollers • Will leave deposits on film • Areas of increased or reduced density • Occasionally some sludge may not be washed off and dried onto the film • Chemical Fog • Improper or inadequate chemistry • Leaves a uniform dull gray haze on the film • May also be seen in two different colors • Referred to as dichroic stain

  6. Guide Shoe and Roller Marks • Guide shoes are sprung or improperly positioned • The ridges in the guide shoe press against the film leaving an artifact • Pi-lines • Dirt or stain on a roller • 3.14 inches apart • Pressure marks • Irregular or dirty rollers • Small, circular patterns are produced

  7. Handling And Storage Artifacts • Light or Radiation Fog • White light streaks • Safelight too close or wrong wattage • Film left in x-ray room during exposure

  8. Kink Marks • Improper handling or storage • Appears as a fingernail mark

  9. Static • Caused by buildup of electrons in the emulsion • Three types of static artifacts • Crown • Tree • Smudge

  10. Hypo Retention • Yellowish stain that appears on finished radiograph • Due to inadequate washing • Remaining thiosulfate from fixer solution

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