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The absence of anatomical landmarks in the whole body scan makes it challenging to precisely localize 131I uptake, which is used to treat patients with differentiated thyroid cancer (DTC). Recently, SPECT/CT studies have been utilized to increase the diagnostic sensitivity and specificity.

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In China, due to the risks of hypothyroidism after radioiodine treatment, radioiodine is not commonly used as a first-line treatment. In this study, factors influencing the development of hypothyroidism after I therapy for Graves' hyperthyroidism were evaluated. This was a retrospective study with a 12-month follow-up.

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Patients with intermediate-risk thyroid cancers may undergo treatment with radioactive iodine-131 (I-131). They often undergo a pretreatment diagnostic iodine scan that typically shows areas of physiological uptake in the stomach, bladder, parotid glands as well as thyroid-remnant uptake and sites of metastatic disease. A 48-year-old woman with intermediate-risk papillary thyroid cancer with metastases to lateral compartment lymph nodes was found to have increased retention of iodine in the medial portion of her left orbit on the diagnostic scan.

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Background: Re-irradiation of recurrent head and neck cancer (HNC) is often limited by tumour adherence to critical structures and/or radiation tolerance of critical normal tissues. Iopofosine I 131 (CLR 131) is a targeted small molecular phospholipid ether (PLE) drug conjugate that delivers iodine-131 selectively to tumour cells. We conducted a phase 1, single-centre, open-label study to determine whether CLR 131 given with reduced dose of external beam radiation therapy (EBRT) would be tolerable and feasible.

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A new biokinetic model for iodine in dairy cows was developed utilizing data from a 4 × 4 factorial feeding experiment with rumen-cannulated cows that were fed rapeseed cake containing substances known to influence iodine metabolism, and soybean meal without such effects. I was administered both intravenously and intra-ruminally to document metabolism pathways. The new model included compartments such as saliva and thyroid gland, often ignored in other models, and in contrast to previously available biokinetic models, it fitted well to our experimental data.

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