Contrast Information
As requested by your physician, CT contrast may be necessary to aid the radiologist in evaluating your scan. The use of this solution helps to visualize certain organs inside the body that are not normally seen well and provides the radiologist with information that is necessary in evaluating your exam.
The contrast agent is given through a small needle placed into a vein, usually on the inside of your elbow or on the back of your hand. The Food and Drug Administration has approved this agent and it is considered quite safe; however any injection carries a risk of harm including injury to a nerve, artery or vein, extravasation of the contrast under the skin, infection, potential or renal injury; or reaction to the contrast itself.
A small percentage of patients receiving CT contrast may develop a mild allergic reaction, the most common being hives. Same patients develop sneezing or itchy, watery eyes. Mild allergic reactions such as these are typically treated with antihistamine. Uncommonly, more serious reactions have been known to occur, including life-threatening reactions. These serious reactions are rare.