140 likes | 1.26k Views
What Is An Artifact?. Any optical density that is not anatomyAn unwanted density on the radiographInterferes with diagnosis. There Are Three Time Periods In Which Artifacts Can Occur. During exposureDuring processingDuring film handling, prior to processing, loading cassette, or storing. Exposure Artifacts.
E N D
1. Radiographic Film Artifacts DMI 50B
Kyle Thornton
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