Changes in the normal range of thyroidal radioiodine uptake

Keeling, D. H.; Williams, E. S.

doi:10.1136/jcp.25.10.863

Cited by 15 publications

(3 citation statements)

References 18 publications

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“…Farran, Haiste, and Hoffenberg (1971) found a mean dl of 0-35 ,ug/dl in 217 euthyroid patients and their diagram indicates a scatter of results similar to ours. Keeling and Williams (1972) found a mean 24-hour 131I neck uptake of 31-9% in 67 euthyroid patients (the corresponding figure in our group A is 30-2 %).…”

Section: Discussionsupporting

confidence: 61%

Iodine contamination of the serum protein-bound iodine: Incidence and clinical significance

Pannall¹,

Minnaar²,

Neser³

1974

J Clin Pathol

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Section: Discussionsupporting

confidence: 61%

Iodine contamination of the serum protein-bound iodine: Incidence and clinical significance

Pannall¹,

Minnaar²,

Neser³

1974

J Clin Pathol

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“…Patients referred to us are coming from urban regions, rural regions, refugee camps, mountainous regions, and desert. Regardless of this variation in the geographic regions of our population within the northern Jordanian districts, we think that our population has sufficient stable iodine intake for 2 reasons: like developed countries, Jordan adds a stable iodine supplement to table salt, and Jordan and other middle east countries have a high consumption of iodine-rich food, including bread, dairy products, sea food, eggs, and vitamin supplements (6,10,11,17). Our euthyroid subjects were not selected from a healthy population.…”

Section: Thyroid Radioiodine Uptake • Al-muqbel and Tashtoushmentioning

confidence: 94%

Patterns of Thyroid Radioiodine Uptake: Jordanian Experience

Al-Muqbel¹,

Tashtoush²

2010

Journal of Nuclear Medicine Technology

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This study aimed to determine the reference range of 24-h radioiodine uptake in euthyroid Jordanians, as well as the reference ranges for patients with diffuse and nodular hyperthyroidism. In addition, radioiodine uptake ranges were determined for those patients with Hashimoto's thyroiditis and early-phase subacute thyroiditis. Methods: The medical records of 285 Jordanian patients referred for 131 I thyroid scintiscans and 24-h radioiodine uptake tests were reviewed. The patients were referred because of a presumed-certain thyroid disorder. The patients included those who were euthyroid or who had Graves' disease, toxic nodules, Hashimoto's thyroiditis, or subacute thyroiditis. Mean radioiodine uptake and the 95% confidence interval were determined in each group. A comparison was made between groups. Results: Mean uptake (6SD) for the euthyroid group, toxic-nodule group, and Hashimoto's thyroiditis group was 15% 6 7%, 19% 6 9%, and 19% 6 15%, respectively, and these values were not significantly different from each other (P . 0.05). Mean uptake for the subacute thyroiditis group and Graves' disease group was 3% 6 4% and 40% 6 14%, respectively, and both values were significantly different from other groups (P , 0.05). Conclusion: The reference range of radioiodine uptake in Jordan is comparable to that reported in North America and Europe because Jordanians likely have a sufficient daily intake of stable iodine. Radioiodine uptake discriminates between euthyroid patients, subacute thyroiditis patients, and Graves' disease patients. Radioiodine uptake in toxic-nodule patients is diagnostic only if combined with image findings. Mean radioiodine uptake in Hashimoto's thyroiditis is higher than the euthyroid mean but has a wide range.

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“…In many countries in Europe table salt iodization has been regarded as the source of increased alimentary iodine supply. Because of the lack of a correlation between the iodine content of food and the decrease in radioiodine uptake in some countries, other factors such as iodized medications and psychotropic drugs have been discussed as etiologic factors (7,16). These studies have, however, not included any direct estimate of iodine intake in the population.…”

mentioning

confidence: 99%

Decreased Radioiodine Uptake Values without Increase in Urinary Iodine Excretion

Ericsson

Thorell

1981

Journal of Internal Medicine

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ABSTRACT. A total of 12847 radioiodine uptake measurements (RIU), performed for diagnostic purposes at Malmö General Hospital 1955–75, have been reviewed. In agreement with the general trend in Europe and the USA, there was a significant decrease in uptake during this period. The 24‐hour RIU (mean ± S.D.) was 51 ±18% in 1955, 41 ±17% in 1965 and 37±18% in 1975. The 3‐ and 48‐hour uptake values, as well as the protein‐bound radioiodine, fell in a parallel fashion. The fall can not be explained by an increased dietary supply of iodine, because the mean urinary excretion did not show any consistent change from 1965 to 1975, apart from a falling trend from 1967 to 1971. The cause of the decrease in thyroid iodine uptake is not elucidated by this study.

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Changes in the normal range of thyroidal radioiodine uptake

Cited by 15 publications

References 18 publications

Iodine contamination of the serum protein-bound iodine: Incidence and clinical significance

Iodine contamination of the serum protein-bound iodine: Incidence and clinical significance

Patterns of Thyroid Radioiodine Uptake: Jordanian Experience

Decreased Radioiodine Uptake Values without Increase in Urinary Iodine Excretion

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