Decreased-Purgation CT Colonography: State of the Art
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- Mahgerefteh, S.Y., Blachar, A., Fraifeld, S. et al. Curr Colorectal Cancer Rep (2011) 7: 71. doi:10.1007/s11888-010-0085-7
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In the setting of CT colonography (CTC), decreasing bowel preparation measures may help to optimize colorectal cancer screening compliance without compromising accuracy. Decreased-purgation or wholly noncathartic CTC, known as nonconventional CTC, may be accomplished in conjunction with fecal tagging. Image post-processing technologies such as electronic cleansing and computer-aided detection may boost accuracy and decrease the need for bowel preparation even further. We review pre-study preparation and image post-processing techniques that have been described in nonconventional-preparation CTC studies over the past 10 years. We explore in detail specific aspects of nonconventional cathartic and fecal tagging regimens, including substance, dose, and time frame of ingestion.