Computed Tomography (CT) Imaging Study

Overview

Definition

CT colonography is a radiology test that looks at the colon (large intestine). It is one of many options for colon cancer screening.

Possible Complications

CT colonography is safe. It can be used if you are too sick to have other forms of colon cancer screening.

In some cases, a contrast material is used. One complication may be an allergic reaction to the contrast.

SymptomsandDiagnosis

Treatments

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

Edits to original content made by Denver Health.

a (Computed Tomography Colonography; Virtual Colonoscopy)

RESOURCES

American College of Gastroenterology http://gi.org 

National Institute of Diabetes and Digestive and Kidney Diseases https://www.niddk.nih.gov 

CANADIAN RESOURCES

Canadian Association of Gastroenterology https://www.cag-acg.org 

Canadian Cancer Society http://www.cancer.ca 

References

CT colonography. Radiology Info—American College of Radiology website. Available at: https://www.radiologyinfo.org/en/info.cfm?pg=ct%5Fcolo. Updated March 17, 2016. Accessed October 3, 2017.

Fletcher RH. Colorectal cancer screening on stronger footing. NEJM. 2008;359(12):1285-1287.

Johnson CD, Chen MH, Toledano AY, et al. Accuracy of CT colonography for detection of large adenomas and cancers. NEJM. 2008;359(12): 1207-1217.

Mulhall P, Veerappan GR, Jackson JL. Meta-analysis: computed tomographic colonography. Ann Intern Med. 2005;142(8):635-650.

Yee J. Screening CT colonography. Radiol Clin North Am. 2004;42(4):757-766.