Dynamic or Early Imaging in Dual-tracer Parathyroid Scintigraphy

Abstract
The dual tracer radionuclide method using TI-201 and Tc-99m subtraction imaging has proven to be effective for evaluation of parathyroid lesions. Ninety-two percent sensitivity for detection of parathyroid adenomas has been reported. The importance of dynamic or early imaging, however, has not been emphasized. A case of surgically proven parathyroid adenoma was detected using dynamic scanning TI-201 injection and was less apparent on delayed image due to rapid washout.

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