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Mount Laurel

CT Colonography

american college of radiology -Computed-TomographyBENEFITS OF CT COLONOGRAPHY

Colorectal cancer is the third most commonly diagnosed cancer in men and women. Early detection can lead to a significantly improved outcome, decreasing both morbidity and mortality from colorectal cancer. CT colonography serves as a screening modality for colorectal cancer. It is a quick and safe procedure in which no sedation is needed. Thus patients can return to their usual activities or go home after the procedure without the aid of another person. It is often used as adjunct to incomplete colonoscopies in which the right colon is incompletely visualized. There is also a secondary benefit of revealing abnormalities outside the colon.


The preparation for CT Colonography is similar to that of a colonoscopy. At least two days prior to the exam, purchase two 10-ounce bottles of Magnesium Citrate and two Dulcolax tablets from your pharmacy and pick up one bottle of Readi-Cat from one of the Larchmont facilities.

  • 8:00 a.m. – Clear liquid BREAKFAST (clear liquids include water, fruit juice (no pulp), clear broth, tea or coffee without milk, Jello and popsicles). NO milk, cream or carbonated beverages.
  • 11:00 a.m. – Take two Dulcolax tablets by mouth.
  • 12:00 p.m. – Clear liquid LUNCH.
  • Between 12:00 p.m. and 11:00 p.m. – Drink eight to twelve 8 oz. glasses of clear liquid.
  • 5:00 p.m. – Drink 10 oz. bottle of Magnesium Citrate.
  • 6:00 p.m. – Clear liquid DINNER.
  • 8:00 p.m. – Drink 10 oz. bottle of Magnesium Citrate and 1/2 (one half) a bottle of Readi-Cat.
  • Your oral medications can be taken prior to your exam with a small amount of water.
  • Nothing further should be taken by mouth.
  • If you take insulin, you must consult your doctor about a adjusting your dose. You should not take insulin if you are fasting for your exam. However, you should bring insulin with you so you can take it after your exam, if directed by your doctor.

CT colonography takes approximately 15 minutes. When you arrive at Larchmont Medical Imaging, you will be given a gown to wear for the procedure. Once you are laying on the CT scanner, a small flexible tube will be slowly placed into the rectum. Air will be introduced into rectum, slowly filling the colon. The CT scans are then acquired with the patient lying face-up and face-down. The images are analyzed on our two- and three-dimensional computer programs. These images are recorded on our digital PACS (picture archiving and communication system) and are also available on film and CD for our referring physicians.



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Each and every time I go to Larchmont Imaging I get the best service. The staff makes me feel very comfortable. Whether it is a mammogram, bone density, x-rays, ultrasound, MRIs, I've always been treated with the utmost respect. They deserve the best for their customer relations. I definitely recommend this place to anyone. It's a nice feeling to know that when I go there I don't feel stressed out or embarrassed. You are the tops.