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Comparison of technetium-99m and iodine-123 imaging of thyroid nodules: Correlation with pathologic findings

Journal Article · · Journal of Nuclear Medicine; (USA)
OSTI ID:6896236
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  1. University Hospital Dr. M. Stojanovic, Zagreb (Yugoslavia)
Three hundred and sixteen patients with solitary or dominant thyroid nodules were imaged both with technetium-99m- (99mTc) pertechnetate and iodine-123 ({sup 123}I). The images were preferred, but differences were small and in 27%-58% of the cases there was no difference in quality between the two radionuclides. Discrepancies between {sup 99m}Tc and {sup 123}I images were found in 5%-8% of cases, twice as often in multinodular goiters as in single nodules. Cytologic/histologic examination was performed on all nodules but no correlation was found between the pathology and the type of discrepancy. Twelve carcinomas were found (4%) but none in nodules showing a discrepancy. There was great variation among the observers about the preference for radionuclides and about the existence or type of discrepancies. The slightly better overall quality of {sup 123}I scans is probably not of diagnostic significance and does not justify the routine use of {sup 123}I instead of {sup 99m}Tc. Routine reimaging of {sup 99m}Tc hot nodules with radioiodine for cancer detection does not appear to be necessary.
OSTI ID:
6896236
Journal Information:
Journal of Nuclear Medicine; (USA), Journal Name: Journal of Nuclear Medicine; (USA) Vol. 31:4; ISSN 0161-5505; ISSN JNMEA
Country of Publication:
United States
Language:
English