MIBG (iodine-131-meta-iodobenzylguanidine) scintiscan


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MIBG injection
MIBG injection
Thyroid enlargement - scintiscan
Thyroid enlargement - scintiscan
Alternative Names

Adrenal medullary imaging


What the risks are

The risks are about the same as for x-rays (radiation) and for needle pricks.

There is some exposure to radiation from the radioisotope. The radioisotope contains iodine, so precautions such as administration of Lugol's solution will prevent excessive uptake by the thyroid. There is significant exposure of the adrenal gland to radiation.

This test should NOT be performed on pregnant women because of the danger to the fetus from radiation.

Any time the body is penetrated (such as with a needlestick), there is a risk of infection. Injection into a vein also carries a slight risk of bleeding. The risk is no greater for this scan than for intravenous injection of any sort.


Special considerations

The radioisotope is costly and may not be available in all medical facilities. The person must be able to return for delayed images within 1 - 3 days.



Review Date: 08/03/2005
Reviewed By: Jonathan Gross, M.D., Department of Radiology, Columbia University Medical Center, New York, NY. Review provided by VeriMed Healthcare Network.


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