You will be able to resume your usual diet immediately after the exam. Your doctor can advise you on dietary restrictions prior to the exam. These agents help the radiologist better distinguish stool from polyps by "tagging" the remaining stool and fluid.īe sure to tell your doctor if you have heart, liver, or kidney disease to be certain that the bowel prep will be safe. These may include small quantities of barium and iodinated liquids. You may take additional agents the day before the exam. Some common preparations are Magnesium Citrate and bisacodyl tablets and/or NuLytely®, Go-Lytely® (Polyethylene glycol electrolyte solutions). You will take either a set of pills and/or a liquid laxative. It is very important to clean out your colon the night before your exam so that the radiologist can clearly see any polyps that might be present. Your diet will be restricted to clear liquids the day before the exam. The bowel-cleansing regimen for CT colonography may be similar to that for a colonoscopy or consist of a smaller volume of cleansing liquid. See the CT Safety During Pregnancy page for more information. Women should always inform their physician and the CT technologist if there is any possibility that they may be pregnant. You will need to wear a gown during the procedure. You should wear comfortable, loose-fitting clothing to your exam. Signs and symptoms of colon cancer include a persistent change in bowel habits, the presence of blood in the stool, abdominal discomfort or pain, bloating and unexplained weight loss. Risk factors for the disease include a history of polyps or having a family history of colon cancer. Individuals at increased risk or with a family history of colon cancer may start screening at age 40 or younger and may be screened at shorter intervals (for example, having a colonoscopy every five years). As part of its recommendation, ACS suggests CT colonography as an option once every five years. The American Cancer Society (ACS) recommends that women and men undergo screening for colon cancer or polyps beginning at age 45. This allows the doctor to remove them before cancer has a chance to develop. The goal of screening with CT colonography is to find these growths in their early stages. A very small number of polyps may grow and turn into cancers. Polyps are growths that arise from the inner lining of the intestine. The major reason for performing CT colonography is to screen for polyps or cancers in the large intestine. What are some common uses of the procedure?
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