This information explains what to do after having reaction to the type of intravenous contrast dye checked below:
Magnetic resonance imaging (MRI) contrast:
☐ Gadopentetate dimeglumine (Magnevist®)
☐ Gadobenate dimeglumine (MultiHance®)
☐ Gadoxetate disodium (Eovist®)
☐ Gadobutrol (Gadovist®)
Computed tomography (CT) scan contrast:
☐ Iohexol (Omnipaque™ 300)
☐ Iohexol (Omnipaque™ 350)
☐ Iodixanol (Visipaque™ 320)
What You Should Do Today
☐ You are being sent to the Urgent Care Center or local Emergency Room.
☐ You are able to go home after your study.
Go to nearest emergency room or call 911 if you:
have difficulty breathing
feel short of breath
have chest pain
Call the doctor who ordered this scan if you have any new or concerning symptoms.
☐ You were given diphenhydramine (Benadryl®), which may make you sleepy.
Do not drive yourself home. We will help make arrangements as necessary.
Go to the nearest Emergency Room if you have sudden sharp eye pain or difficulty urinating.
What You Should Do Before Your Next Radiology Exam with Contrast
Tell all your healthcare providers that you have this reaction. We have entered the contrast listed above as a reaction in your medical record at MSK.
For future ☐ CT scan ☐ MRI studies with contrast, follow the instructions checked below:
☐ Your reaction was a side effect of the contrast, not an allergy. We will take steps to minimize the side effect the next time you have this contrast.
☐ Your reaction was a mild allergic reaction. You do not need to do anything differently before your next scan.
☐ Your reaction was a moderate allergic reaction. You need to take medications before every (check one) ☐ MRI ☐ CT scan you have with contrast. Your primary doctor will give you a prescription for a steroid medication and possibly diphenhydramine (Benadryl®). You will need to start taking these medications the day before your scan.
☐ Your reaction was a serious allergic reaction. You should not receive contrast before your next (check one) ☐ MRI ☐ CT scan without talking with your doctor about your allergy.
If you have any questions, call _____________________ and ask to speak to a nurse.Back to top
If you have any questions or concerns, talk with a member of your healthcare team. You can reach them Monday through Friday from 9:00 am to 5:00 pm at ____________________. After 5:00 pm, during the weekend, and on holidays, please call____________________. If there’s no number listed, or you’re not sure, call 212-639-2000.