CT artifacts

CT artifacts are common and can occur for various reasons. Knowledge of these artifacts is important because they can mimic pathology (e.g. partial volume artefact) or can degrade image quality to non-diagnostic levels. 

CT artifacts can be classified according to the underlying cause of the artifact. 

Patient-based artifacts
Physics-based artifacts
Hardware-based artifacts
Helical and multichannel artifacts

See also

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Article information

rID: 25638
Section: Physics
Synonyms or Alternate Spellings:
  • CT artifact
  • CT artefacts
  • CT artefact

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Cases and figures

  • Case 1: motion artifact
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  • Case 2: ring artifact
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  • Case 3: motion and beam-hardening
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  • Case 5: motion artifact mimicking SDH
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  • Case 6: streak artifacts
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  • Case 7: partial ring artifact
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  • Case 8: incomplete projection
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