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Technetium (99m Tc) sestamibi (commonly sestamibi; USP: technetium Tc 99m sestamibi; trade name Cardiolite) is a pharmaceutical agent used in nuclear medicine imaging. The drug is a coordination complex consisting of the radioisotope technetium-99m bound to six (sesta=6) methoxyisobutylisonitrile ( MIBI ) ligands .
A nuclear medicine parathyroid scan demonstrates a parathyroid adenoma adjacent to the left inferior pole of the thyroid gland. The above study was performed with Technetium-Sestamibi (1st column) and Iodine-123 (2nd column) simultaneous imaging and the subtraction technique (3rd column).
These employ the same radioligands and have the same uses as SPECT scanning, but are able to provide even finer 3-D localization of high-uptake tissues, in cases where finer resolution is needed. An example is the sestamibi parathyroid scan which is performed using the 99m Tc radioligand sestamibi, and can be done in either SPECT or SPECT/CT ...
A sestamibi scan is a medical imaging technique using gamma rays from the radioactive decay of the manmade compound Technetium (99mTc) sestamibi to penetrate muscle and other tissue to view their condition and function. It may refer specifically to: MIBI scan, a type of cardiac imaging to assess the condition and function of the heart
A parathyroid adenoma is a benign tumor of the parathyroid gland. It generally causes hyperparathyroidism; there are very few reports of parathyroid adenomas that were not associated with hyperparathyroidism. [1] A human being usually has four parathyroid glands located on the posterior surface of the thyroid in the neck.
Nuclear medicine imaging methods are used by surgeons to locate which parathyroid gland is responsible for hyperparathyroidism or to find ectopic parathyroid adenomas, most commonly found in the anterior mediastinum. [citation needed] Historically, technetium sestamibi scintigraphy was the main method used or this indication. [39]
Parathyroidectomy is the surgical removal of one or more of the (usually) four parathyroid glands.This procedure is used to remove an adenoma or hyperplasia of these glands when they are producing excessive parathyroid hormone (PTH): hyperparathyroidism.
Minimally-invasive parathyroid surgery is becoming more available, but, depending on the expertise of the surgeon, the patient may need to have a positive sestamibi scan before a minimally-invasive operation is attempted.