What is the difference between iohexol and barium sulfate?

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Iohexol and barium sulfate are both contrast agents that are used during diagnostic radiographic (X-ray) imaging scans. Contrast agents contain an element that is opaque to the X-rays of scanner. Iohexol contains iodine as the opaque ingredient; barium sulfate contains barrium as the opaque ingredient. The barium products are used only in the gastrointestinal (GI) tract; iohexol is used in the GI tract and many other parts of the body. Sometimes barium cannot be used because the person has a perforated bowel or there is a risk that the person will regurgitate some of the barium solution and then inhale it into the lungs. In these cases, iohexol may be preferred because there is less risk.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.