Ring artifact

Case contributed by Dr Pir Abdul Ahad Aziz

Patient Data

Age: 40 years
Gender: Male

Ring artifact from the defective detector.

Case Discussion

Ring artifact is caused by miscalibration or failure of one or more detector elements in a CT scanner. The remedy is usually simple, recalibrate the scanner and let the referrer know that the worrying-looking ring shadows are artifactual.


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Case information

rID: 69320
Published: 6th Jul 2019
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included
Institution: Liaquat National Hospital

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