2 doctors weighed in:

Nsclc st4. Diagnostic CT scans used iodine contrast but due to allergy, post treatment CT scans used barium. How accurate/comparable are the scans?

2 doctors weighed in
Dr. Craig Carter
Surgery - Thoracic

In brief: Not at all

Barium is an oral agent, and cannot be given intravenously.
If you are allergic to iodine, you should be treated with a steroid prep prior to administration of iodine contrast.

In brief: Not at all

Barium is an oral agent, and cannot be given intravenously.
If you are allergic to iodine, you should be treated with a steroid prep prior to administration of iodine contrast.
Dr. Craig Carter
Dr. Craig Carter
Thank
Dr. Matthew Solhjem
Radiation Oncology

In brief: CT.

Iodine contrast highlights the vessels on ct (arteries/veins) so it is easier to detect lymph nodes or other tumors.
Barium highlights the stomach, small and large intestine. This allows easier detection of abdominal tumors. A ct without contrast is difficult to interpret. Could consider MRI with gadolinium contrast (different than iodine) if need be. Best discussed with your oncologist.

In brief: CT.

Iodine contrast highlights the vessels on ct (arteries/veins) so it is easier to detect lymph nodes or other tumors.
Barium highlights the stomach, small and large intestine. This allows easier detection of abdominal tumors. A ct without contrast is difficult to interpret. Could consider MRI with gadolinium contrast (different than iodine) if need be. Best discussed with your oncologist.
Dr. Matthew Solhjem
Dr. Matthew Solhjem
Thank
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