What is x-ray contrast (x-ray dye) for a CT scan or an IVP exam?
top Some exams require contrast, or dyes, to help enhance the visualization of certain tissues. The x-ray contrast improves the diagnostic quality of the examination by making abnormalities more apparent. If x-ray dye is needed, it is administered by injection into a vein. You may feel a slight sensation during this injection. The newer non-ionic contrast media (x-ray contrast/x-ray dye) has been chosen for intravenous use at Lexington Clinic. Those persons allergic to iodine (such as shellfish) should notify their doctor prior to any CT scan or IVP exam. Though these agents have been shown to be safer than the formerly used contrast media (x-ray contrast/x-ray dye), any injection carries some risks. Approximately 95% of all reactions to the contrast media (x-ray contrast/x-ray dye) are mild to moderate in nature and may include itching, hives, and swelling of the lips and eyes. Some respiratory and cardiac reactions may be more serious and require medical treatment. These problems are
