Fig. 7
From: Understanding the importance of quality control and quality assurance in preclinical PET/CT imaging
Images displaying common examples of artefacts that would be seen by visual QC inspection of CT images. Panel A displays an example of CT streaking artefacts. The cause of such streaking artefacts is most of the times due to mechanical failure or imperfections (poor detector sampling and failure). Panel B shows an example of a CT ring artefact mostly caused by a CT centre of rotation error. Panel C is the axial view of a PET/CT phantom showing the misalignment between the PET (colour) and the CT (light grey arc). This is due to scanner hardware being misaligned. McDougald W. PET/CT. In: Imaging Modalities for Biological and Preclinical Research: A Compendium, Volume 2. IOP Publishing; 2021:III.2.a-1-III.2.a-12. https://doi.org/10.1088/978-0-7503-3747-2ch18