It is the instrument used in nuclear medicine to evaluate the functional status of thyroid. it has sodium iodide crystals and other electronic systems which will help to find out the radiations comming out from the patient after administration of radioactive Iodine 131.
no thyroid uptake is a painless procedure
Because the results of the uptake will determine whether you will need surgery to remove your thyroid glands.
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The thyroid scan and a radioactive iodine uptake test (RAIU), also known as a thyroid uptake, are types of nuclear medicine imaging.
Breaking down Multilobular area of uptake within the thyroid bed means the amount of radiation in the many lobes of the thyroid bed. The higher the uptake of tracer the faster the metabolism indicates hot spots for concern.
The hormone responsible for increasing the uptake of iodide by the thyroid gland and for increasing the growth of the thyroid gland is thyroid-stimulating hormone (TSH), also known as thyrotropin.
A thyroid uptake scan wouldn't normally be needed unless it is suspected that thyroid tissue was missed during surgery (sometimes thyroid tissue can be found in other areas of the body), or the reason for the surgery was cancer and the removal of all the tissue is vital.
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Any thyroid issues can be found out through a blood test too.
The thyroid gland regulates metabolism, growth, and calcium uptake. The thyroid gland, located in the neck, also makes proteins and controls the body's sensitivity to other hormones.
Thyroid cold spots are areas of decreased radionuclidic uptake, meaning that particular area of the thyroid is not metabolizing iodine. These finding are consistent with cysts, hypothyroidism, benign growths, inflammation, or malignancy. In addition to a scan, an uptake is often performed. This is done by counting the activity of the radioactive iodine (RAI) with a gamma probe, administering the RAI (commonly in pill form), and then positioning the patient about 8cm from the probe and counting activity over the thyroid commonly at 6 and 24 hours post RAI administration. This is helpful in determining if the thyroid is hypo, hyper, or normal (euthyroid). Uptake percentages relative to the initial activity are considered normal within the ranges of 10-30% respectively. Thyroid inflammtion can mimic the uptake values of hypothyroidism. In addition, the patient should not have any study using RAI if they have a study requiring the use of Iodine contrast (eg contrast enhanced CT), take multivitamins containing iodine, have recently taken cold medicine containing iodine or antihistimines including diet pills, or if they are on a special diet containing kelp or seeweed tablets. In patients with known hypothyroidism, thyroid suppressive medication (eg Synthyroid) should be discontinued for 2-6wks prior to RAI administration. Back to the scan... A single cold spot is malignant in about 10-20% of cases. Therefore, a biopsy is helpful for providing a differential diagnosis using laboratory histology.