Why Are Oral And Intravenous Contrast Used In CT?
Oral contrast is used to image the stomach and intestines. It is a very dilute, flavored, barium solution that you drink approximately 1 hour prior to an exam. Intravenous contrast is sometimes referred to as “dye.” Although colorless, it contains iodine, which makes specific organs, blood vessels, and tissues visible on x-rays for better detection of disease or injury. It is not radioactive. We only use “nonionic” contrast, which is formulated to minimize any risk of an allergic reaction. The risks and benefits of contrast will be explained to you when you arrive for your exam. Occasionally, mild allergic reactions may occur such as hives, rash, or itching. In rare instances a patient may have a more severe allergic reaction, which might include difficulty breathing, swelling in the throat, or loss of consciousness. Our staff is fully trained and experienced to manage any potential adverse reactions. Patients will be asked, and should notify our staff, if they have a history of allerg
