CT artifacts
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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 artefactartifact) 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
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beam hardening
- cupping artifact
- streak and dark bands
- metal artifact/high-density foreign material artifact
- partial volume averaging
- quantum mottle (noise)
- photon starvation
- aliasing in CT
Hardware-based artifacts
Helical and multichannel artifacts
See also
-<p><strong>CT artifacts</strong> 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. </p><p>CT artifacts can be classified according to the underlying cause of the artifact. </p><h5>Patient-based artifacts</h5><ul>- +<p><strong>CT artifacts</strong> are common and can occur for various reasons. Knowledge of these artifacts is important because they can mimic pathology (e.g. partial volume artifact) or can degrade image quality to non-diagnostic levels. </p><p>CT artifacts can be classified according to the underlying cause of the artifact. </p><h5>Patient-based artifacts</h5><ul>
-<a title="Multiplanar reconstruction (MPR) artifact" href="/articles/multiplanar-reconstruction-mpr-artifact">multiplanar reconstruction (MPR) artifact</a><ul>-<li><a title="Zebra artifact (CT)" href="/articles/zebra-artifact-ct">zebra artifact</a></li>- +<a href="/articles/multiplanar-reconstruction-mpr-artifact">multiplanar reconstruction (MPR) artifact</a><ul>
- +<li><a href="/articles/zebra-artifact-ct">zebra artifact</a></li>