When performed every three to five years, CT colonographies may be more effective at catching instances of colon cancer than stool-based tests, according to a June 10 study published in Radiology.
The study determined that two CT screening approaches outperformed stool DNA testing in computer models, and that CT screening was more cost-effective than stool tests.
In a study of 10,000 modeled 45-year-old adults, colorectal cancer incidence was reduced by 59% with colorectal screening with multitarget stool DNA testing and by 70% to 75% with CT colonography strategies.
Researchers estimated that patients will see an average 70% reduction in cancer cases with CT scans performed every three years and follow-up colonoscopy performed to remove polyps 10 millimeters or larger, and a 75% reduction with CT scans every five years and follow-up removal of polyps six millimeters or larger.
Both CT scan strategies were also more cost-effective than stool DNA testing, according to the study.
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