Lesion Dosimetry With Iodine-124 in Metastatic Thyroid Carcinoma
Memorial Sloan Kettering Cancer Center
60 participants
Aug 21, 2018
INTERVENTIONAL
Conditions
Summary
The purpose of this study is to evaluate a new diagnostic imaging test, positron emission tomography (PET), with a different radioactive form of iodine called iodine-124. This form is able to accurately measure the amount of radioactive iodine uptake in the cancer. If the new test determines sufficient radioiodine uptake in the cancer, treatment will continue as usual. However, if the new test shows only low radioiodine uptake, a decision may be made that the benefit from radioiodine therapy is insufficient and that another form of therapy is preferred.
Eligibility
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Interventions
Up to four whole-body PET scans (approximately 24, 48, and 120 hours post 124I oral dose) will be performed on one of the GE Discovery 710 or 690 PET scanners.
Patients will receive 0.9 mg injections of rhTSH on two consecutive days. Twenty-four hours after the last injection of rhTSH each patient will receive approximately 5 mCi (range: 4-7 mCi) of 124I orally as a single dose. (If a holiday is present in the work week, 124I can be administered orally on Day 2, if needed).
Locations(1)
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NCT03647358