Virtual colonoscopy is a good option for screening for colorectal cancer, along with colonoscopy. Virtual colonoscopy is safe, does not require IV sedation or a driver to take you home and it costs about half as much as a colonoscopy. However, polyps can't be removed during a virtual colonoscopy. Which test to choose is a question to discuss with your doctor. The important point is to be screened.
About 10 percent of the time virtual colonoscopy identifies a polyp requiring removal. You can elect to have a colonoscopy exam scheduled the same day as the virtual colonoscopy so you can have the polyp removed without the need for a second bowel prep.