Sestamibi scan

Pronunciation

Definition 1

An imaging test used to find overactive parathyroid glands (four pea-sized glands found on the thyroid) and breast cancer cells, and to diagnose heart disease. The patient receives an injection of a small amount of a radioactive substance called technetium which is bound to another substance called sestamibi. This substance collects in overactive glands, cancer cells, heart muscle, or other tissues and a picture is taken by a gamma camera (a special camera that detects radioactivity). (NCI Dictionary)

Definition 2

A nuclear imaging procedure which is performed to identify hyperparathyroidism. Sestamibi is a nuclear radiopharmaceutical which is bound to the radioactive isotope Tc99m. Tc99m-Sestamibi is taken up by both the thyroid gland and the parathyroid gland, and is also used in Nuclear Myocardial Perfusion Imaging. (NCI Thesaurus)

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