Streak, beam hardening and ring artifacts
CT scan was performed in this 70-year-old comatose, ICU patient for evaluation of aspiration pneumonia.
Loading Stack -
0 images remaining
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.