Are you aware of there any case reports of a person under 20 yo dying of anaphylactic (non-IgE-mediated) reaction to CT or MRI intravenous contrast? (I did a PubMed search and could not find such a case. I don't think I've ever read of a child or teenager having a severe anaphylactic reaction to CT or MRI contrast)
Also, if a person has a h/o systemic "allergic"/anaphylactic reaction to CT intravenous contrast dye, should that person need to be pre-medicated with steroids and antihistamines if an MRI with IV contrast is done? (I don't think there are any official recommendations saying to do that, but I am curious what your opinion is).
I was talking to a radiologist today, and those questions came up.