Thyroid scan
Alternate Names : Scan - thyroid, Radioactive iodine screening test - thyroid, RAUI, Nuclear scan - thyroid
Normal Values
The thyroid appears the correct size, shape, and in the proper location. It appears an even gray color on the computer image.
What do Abnormal Results Mean?
A thyroid that is enlarged or pushed off to one side could indicate a tumor. Nodules will absorb more or less iodine and will appear darker or lighter on the scan (usually lighter if tumor). If part of the thyroid appears lighter, it may indicate a possible thyroid problem.
The computer will also show the percentage of iodine that has collected in your thyroid gland. If your gland collects too much or too little of the radiotracer, this can cause hypothyroidism or hyperthyroidism. Other conditions under which the test may be performed:
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