The “Air in the CT X-ray Tube Oil” Artifact—Examples of the Quality Control Images and the Evaluation of Four Potential Clinical Patients' Head Computed Tomography Cases

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We present a newly reposted scanner-based artifact—with 4 potential patients' head computed tomography (CT) cases—the “Air in the CT X-ray Tube Oil” artifact with a 64-slice multidetector CT. This artifact mimics diseases, which cause hypodense findings in CT images. It can be difficult to notice in the clinical patient imaging but can be also very difficult to verify in quality control tests.

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