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What factors influence image quality?
What factors influence image quality?
The factors that influence image quality are:
- Contrast
- Unsharpness
- Graininess
1 Contrast depends on:
- Radiation energy (hardness)
- Variation in thickness
- Backscatter
- Front- and back screen
- Film-screen combination
- Film-screen contact
- Defect location, depth as well as orientation
2 Unsharpness depends on:
- Size of focus
- Thickness of the object
- Source-to-film distance
- Radiation energy (hardness)
- Film-screen combination
- Film-screen contact
3 Graininess depends on:
- Type of film
- Type of screen
- Developing procedure
- Radiation energy (hardness)