NEW YORK (Reuters Health) — Computed tomography (CT) imaging of the colon may be the most cost-effective option for colorectal cancer screening, according to a report in the online issue of Cancer.“CT colonography, when properly implemented, is not only a clinically effective screening test, it is also a much safer and more cost-effective approach than subjecting all healthy adults to invasive colonoscopy,” Dr. Perry J. Pickhardt told Reuters Health.

Colonoscopy, the most accurate test for colorectal cancer detection currently used, involves insertion of a tube, or “endoscope”, through the colon while the patient is sedated. A small camera visualises any polyps, which are snared and removed for microscopic evaluation.

“It is critical to remember that no single screening test will appeal to all individuals.”