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RAD 354 Chapt . 21 Digital Image Artifacts

RAD 354 Chapt . 21 Digital Image Artifacts. Image receptor artifacts Software artifacts Object artifacts. Image Receptor Artifacts. Dust-dirt, scratches P ixel malfunction Ghost images. Software Artifacts. Histograms Range/scaling Image compression. Object Artifacts.

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RAD 354 Chapt . 21 Digital Image Artifacts

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  1. RAD 354 Chapt. 21Digital Image Artifacts • Image receptor artifacts • Software artifacts • Object artifacts

  2. Image Receptor Artifacts • Dust-dirt, scratches • Pixel malfunction • Ghost images

  3. Software Artifacts • Histograms • Range/scaling • Image compression

  4. Object Artifacts • Patient positioning • Collimator/partition • Backscatter

  5. Processing Artifacts • “Sending”/signal errors • Reader: sender systems have been known to “ship” the first image and superimpose a second image from a DIFFERENT receptor on top of the first image sent!

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