Abdominal Radiology

, Volume 43, Issue 3, pp 523–538 | Cite as

CTC technique: methods to ensure an optimal exam



CT colonography (CTC) has demonstrated equivalent accuracy to optical colonoscopy in the detection of clinically relevant polyps and tumors but this is only possible when technique is optimized. The two most important features of a high-quality CTC are a well-prepared colon and a distended colon. This article will discuss the dietary, bowel preparation, and fecal/fluid tagging options to best prepare the colon. Strategies to optimally distend the colon will also be discussed. CT scan techniques including patient positioning and radiation dose optimization will be reviewed. With proper technique which includes sufficient bowel preparation, fecal/fluid tagging, bowel distension, and optimized scan technique, high-quality CTC examinations should become more feasible, easier to interpret, and more consistently reproducible leading to increased utilization and increased referrals.


CT colonography Bowel preparation Colonic distension CT technique 


Compliance with ethical standards


No relevant funding information.

Conflict of interest

KJC has no conflict of interest. DHK is co-founder of VirtuoCTC, Consultant for Viatronix, Medical Advisory Board Digitalartforms, Shareholder Cellectar, and Shareholder Elucent.

Ethical approval

This article does not contain any studies with live human participants or animals performed by any of the authors.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of RadiologyNewton-Wellesley HospitalNewtonUSA
  2. 2.The Warren Alpert Medical School of Brown UniversityProvidenceUSA
  3. 3.Department of Radiology, E3/311 Clinical Science CenterUniversity of Wisconsin Madison School of Medicine and Public HealthMadisonUSA

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