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Beam Hardening Artefacts

Beam hardening artefacts appear as streaks and shadows adjacent to areas of high density such as the petrous bones, shoulders, and hips. The artefact occurs because the high density anatomy absorbs the lower energy photons while the higher energy photons pass through to the detectors which results in the beam becoming 'harder'.


Metal Artefacts




Motion Artefacts




Multislice Artefacts




Partial Volume Artefacts




Ring Artefacts

Insufficient exposure results in concentric circles in the center of the field of view.

Ring Artifact
The ring artifact is seen here in the left lobe of the liver.


eliseleblanc
eliseleblanc
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