contrast agent

con·trast agent (kntrst)

n.

See contrast medium.

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Contrast agent

Also called a contrast medium, this is usually a barium or iodine dye that is injected into the area under investigation. The dye makes the interior body parts more visible on an x-ray film.

Mentioned in: Congenital Ureter Anomalies, Diffuse Esophageal Spasm, Duodenal Obstruction, Esophageal Pouches, Gallstone Removal, Hydronephrosis, Intravenous Urography, Lymphangiography, Myelography, Nephrotoxic Injury

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contrast agent.

See contrast medium .

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Patient discussion about contrast agent.

Q. Has anyone had an allergic reaction to gadolinium dye, MRI contrast agents, I have had a severe reaction. I would like to know the long term effects of this dye. And if anyone else has had or heard of problems and reactions to it. Please answer me. Thank you

A. In 1969 I almost died from the IVP dye. I had no idea I was allergic and when I awoke I was in a "recovery room." The doctor told me to always tell any physicians/paramedics etc of my allergy status regarding the dye. I now have chronic back pain, have a history of cancer in the family and the doctor wants to do a scan (including dye) but when I emphasized that I was allergic he backed off. Now I am wondering if there is anything else that can be done to test the bone (scan) without the dye. Any answers? Thanks