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Kew Gardens, NY
A 37-year-old male asked:

Allergic to 2 ct scans iodized iv contrast exams, itching, rash. dr. wants mri cervical spine with contrast. is this a good idea, is this contrast diff?

2 doctor answers3 doctors weighed in
Dr. Lawrence Judy
Internal Medicine 45 years experience
Yes: The contrast for an mr exam is not the same at all. This contrast can be of concern in patients with chronic renal diseases. Incidentally, many people who have reacted to iodinated contrast like with ct or cardiac catheterization can be pre-treated and will tolerate the contrast without trouble. This allows important tests which depend upon contrast to be done.
Dr. David Rosenthal
Allergy and Immunology 22 years experience
Yes: Ct scan contrast is totally different than MRI contrast. Ct contrast agents is usually iodinated and are classifed as either ionic or non-ionic. In contrast, MRI contrast agents usually contains chelated gadolinium. Tell the radiologist about your previous ct scan contract allergic symptoms when getting your mri.

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Last updated Mar 28, 2015

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