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Streak, beam hardening and ring artifacts

Case contributed by Saeed Soltany Hosn
Diagnosis not applicable

Presentation

ICU comatose patient for evaluation of aspiration pneumonia.

Patient Data

Age: 70 years
Gender: Male

CT demonstrates dependent pulmonary parenchymal changes, cardiomegaly and gall stone.

You can see large amount of streak artifacts around the right shoulder due to the presence of metal objects in the scan field . There are also beam-hardening artifact  from arm-down position and ring artifact.

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