A "virtual" colonoscopy uses CT (computed tomography) scanning to examine the colon or large intestine. This screening is used to examine the colon's lining to detect polyps or growths that are one centimeter in size (less than a half inch) or larger. Polyps greater than one centimeter have a greater cancer risk. Polyps vary in size/appearance and they may grow to appear like a cherry on a stem. The incidence of polyps increases with age.
The day before the CT screening examination, you will be asked to drink an oral colonic cleanser. This helps clean out the intestine for better visualization. Just before the test, air is instilled into the colon and then the scan is conducted. The test can take the place of conventional colonoscopy in screening for colon cancer in non-symptomatic cases. If polyps or suspicious growths are found, you will be referred for a colonoscopy (a procedure to removal polyps in the colon) or other treatment.
The results will be phoned, faxed, mailed or delivered electronically to the referring physician. He or she will share the results with you. At St. Rita's, board certified radiologists are on site daily so the test will be interpreted promptly.
