Ring artifact

Case contributed by Dr Omar Giyab

Two images from a non-contrast CT of the abdomen demonstrate concentric rings centered on the caudate lobe of the liver. These do not conform to normal anatomy and represent ring artefact. 

Case Discussion

Ring artifact is usually obvious and rarely is mistaken for pathology, although it can obscure pathology in affected parts of the scan. It is most often due to a faulty x-ray detector. 

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Case information

rID: 22694
Published: 16th Apr 2013
Last edited: 8th Nov 2020
Inclusion in quiz mode: Included
Institution: University of Pécs

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