Diagnostic Services

Thyroid Scan

Tc-99m pertechnetate thyroid scan is a functional nuclear medicine study used to assess the thyroid gland. The uptake of the pertechnetate anion - similar in chemical-physical characteristics to the iodide ion - in the thyroid parenchyma is mediated by the NIS (Sodium-Iodide Symporter). However, unlike iodine, pertechnetate anion is not incorporated into thyroid hormones.