Home
Search in�� ��for��
 
Resources
Career Center
New Hospital Update
Learn More About MCI
Bill Payment
Upcoming Events
Find a Physician
Press Releases
Maps and Directions
Visiting Hours
Medical Services
Specialty Programs and Services
Volunteer Services
H2U
Birthing Center Tours
Clinics
Family Care of Eastern Jackson County
Jackson County Medical Group
Family & Friends
Virtual Body
Virtual Cheercards
Web Babies
Decision Tools
Self-Assessment Tools
Natural and Alternative Treatments Main Index
Health Sources
Cancer InDepth
Heart Care Center
HealthDay News
Wellness Centers
Aging and Health
Alternative Health
Sports and Fitness
Food and Nutrition
Men's Health
Mental Health
Kids' and Teens' Health
Healthy Pregnancy
Medications
Travel and Health
Women's Health
Genus MD
Genus MD
Physician Websites
Legal Disclaimers
Nondiscrimination
Privacy Notice



Send This Page To A Friend
Print This Page

CT Colonography

(Computed Tomography Colonography; Virtual Colonoscopy)

 

Definition

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

 

Reasons for Test    TOP

This test is used to look for polyps or cancers of the colon.

Colon Polyps

Nucleus Image

Copyright © Nucleus Medical Media, Inc.

 

Possible Complications    TOP

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.

 

What to Expect    TOP

Prior to Test

  • Do not eat for 8-12 hours prior to the test.
  • A bowel cleansing will be done with a laxative. The goal of the cleansing is to rid your colon of all stool. The laxative will cause you to have many bowel movements over several hours.
  • If you have diabetes, talk to your doctor about adjusting your medications.

Description of the Test

You will be positioned on your back on a movable x-ray table. Just before the test, a small tube will be inserted into your rectum. Air will be gently pumped through this tube. The table will move slowly though the donut-shaped CT scanner. While this is happening, you will need to lie very still. You will be asked to hold your breath during the scan. The scanning test will then be repeated with you lying on your stomach.

After Test    TOP

You will be able to leave after the test is done. You can resume your normal diet and activities.

How Long Will It Take?    TOP

30-40 minutes

Will It Hurt?    TOP

You may feel cramping and bloating. You may feel the urge to have a bowel movement.

Results    TOP

An specialist will review the images. If something abnormal is seen, your doctor may suggest a colonoscopy.

 

Call Your Doctor    TOP

It is important to monitor your recovery. Alert your doctor to any problems. If any of the following occur, call your doctor:

  • Nausea
  • Itching
  • Difficulty breathing

If you think you have an emergency, call for emergency medical services right away.

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_colo. 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.



Last reviewed September 2018 by EBSCO Medical Review Board Daus Mahnke, MD
Last Updated: 9/17/2014

Health References
Health Conditions
Therapeutic Centers


Copyright � 1999-2007
ehc.com; All rights reserved.
Terms & Conditions of Use
Privacy Statement
Medical Center of Independence
17203 E. 23rd St.
Independence,� MO� 64057
Telephone: (816) 478-5000