CLO 2: Discuss practical considerations in setting standards for acceptable image quality

  • IR/detector manufactures specify an expected range of x-rays exposure that will produce a good-quality image
  • A quality radiographic image accurately represents the anatomic area of interest
  • Brightness, contrast, spatial resolution, and distortion are all factors
  • X-ray tubes that have excessive or insufficient filtration may begin to affect image quality
A radiographic image must have sufficient brightness to visualize the anatomic structures of interest.
The radiograph must exhibit differences in the brightness levels or densities (image contrast) in order to differentiate among the anatomic tissues.
Spatial resolution refers to the smallest object that can be detected in a digital image. Shape distortion is a misrepresentation of an object’s image shape.

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