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Everything you need to know about Computed Tomography (CT) & CT Scanning


Unique Clinical Scenarios

question1. The patient has sickle cell disease. Can they get IV contrast?
question2. The patient has multiple myeloma. Can they get IV contrast material?
question3. If a patient has thyroid disease is iodinated contrast contraindicated?
question4. If a patient has thyroid cancer is iodinated contrast contraindicated?
question5. If a patient has myathenia gravis should iodinated contrast be used for a chest CT?
question6. If a patient is on glucophage (or other oral diabetes medications) is there an issue with iodinated contrast agents? What is the current rule with oral diabetes drugs? (glucophage)
question7. What patients take glucophage (metformin)?
question8. What is the danger of Metformin and iodinated contrast?
question9. What are the other names for metformin?
question10. What are the current guidelines for patients taking metformin and needing a contrast study?
question11. Is there any problem with using iodinated contrast for CT if a patient is on the cardiac drug Amiodarone?
question12. Can you use iodinated contrast on a patient with suspected or known pheochromocytoma?
questionIn the past this was always considered a high risk to the patient. However, that was in the ionic contrast days. Today in the era of non-ionic contrast this is no issue. Several select references define current policy.

Pheochromocytomas and IV Contrast (True/False)
  • If a pheo is suspected IV contrast is usually not given unless patient is treated with an alpha-adrenergic blocking drug
  • Contrast related reactions with pheo’s are very uncommon with the use of non-ionic contrast agent

"IV administration of nonionic contrast material for CT is a safe practice for patients with pheochromocytoma and related tumors even without alpha-blocking medication."

CT of Pheochromocytoma and Paraganglioma: Risk of Adverse Events with IV Administrationof Nonionic Contrast Material


Bessell-Browne R et al.
 AJR 2007; 188:970-974

"Our results and the clinical practice described in the recent literature suggest that alpha-blockade is not specifically required before IV administration of nonionic contrast material to patients with suspected or known pheochromocytoma or related tumors."

CT of Pheochromocytoma and Paraganglioma: Risk of Adverse Events with IV Administrationof Nonionic Contrast Material
Bessell-Browne R et al. AJR 2007; 188:970-974

question13. If a patient is nursing can she receive IV contrast?
question14. What is our policy for scanning a pregnant patient?
question15. If a CT is done on a pregnant patient and iodinated contrast is used can that affect the fetus?
question16. Who should get baseline serum creatinine levels before CT?

 

© 1999-2020 Elliot K. Fishman, MD, FACR. All rights reserved.