Abstract
The use of CTC is intended for diagnosis of both polyps and malignancy in screening of asymptomatic individuals over the age of 50 years. There are however lesions and disease processes that may mimic both colonic polyps and cancer on CTC. The most basic of these pitfalls is the thickened or complex fold, which may be encountered on both 2D and 3D imaging. The most common pitfall is the presence of homogenous adherent stool. This may be mistaken for a polyp. Tagging is essential to distinguish stool and polyp on CTC images. Other potential pitfalls include, for example, anatomical locations and structures, position of the rectal catheter, external impressions on the colon lumen and a range of artefacts. These are described, with examples, in this chapter.
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Viatronix, Stony Brook, New York, is thanked for providing the electronic cleansing images of the colon.
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Bortz, J.H. (2016). Pitfalls and Artefacts. In: Bortz, J., Ramlaul, A., Munro, L. (eds) CT Colonography for Radiographers. Springer, Cham. https://doi.org/10.1007/978-3-319-29379-0_12
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DOI: https://doi.org/10.1007/978-3-319-29379-0_12
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