chemical thyroidectomy
Iodine is found in thyroxine.It is secreted by thyroid
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Thyroid
The thyroid glands secrete thyroxine which contains Iodine. Moreor less of Iodine content can cause permanent harm to the body like Hopothyroid and Hyperthyroid.
1 mm = 2.0 mCi So 1.5 mm = 3.0 mCi
Addison's disease is treated using the oral administration of radioactive iodine to destroy thyroid cells.
The thyroid processes iodine.
Radioactive iodine.
Iodine (regardless of whether it is radioactive or not) tends to concentrate in the thyroid gland. Radioactive iodine can thus lead to thyroid cancer if left unchecked. Fortunately you can generally flush out the radioactive iodine with normal "cold" iodine. We tend to get much of our iodine from salt which is "iodised". Interestingly in some cases when a patient has an overactive thyroid, or indeed in thryoid cancer patients, the thyroid can be chemically ablated by the use of radioactive iodine since it concentrates there naturally.
Iodine tablets are used in a nuclear accident to saturate the thyroid with non radioactive iodine. During a nuclear accident, radioactive iodine is released and the critical organ in the human body is the thyroid gland. Therefore if the thyroid is already full of non radioactive iodine the radioactive iodine can not be absorbed.
The thyroid gland absorbs iodine. As some radioactive iodine is being emitted into the environment from the reactor accident at Fukushima, Japan, there is a chance that people's thyroid glands will absorb the radioactive iodine. That is unless those people saturate their glands with enough non-radioactive iodine first so that the thyroid cannot absorb any more.
Basically, radioactive iodine is used to kill cancer cells, and thyroid tissue.
Radioactive iodine is a treatment option used for those with hyperthyroidism and the thyroid autoimmune condition Graves' disease. Radioactive iodine treatment can also be used for those dealing with thyroid cancer. It is given orally, usually in a capsule form, and absorbed in the bloodstream. It then enters the thyroid gland and gradually destroys the thyroid cells, which will cause the thyroid to become hypothyroid.Related Article: Radioactive Iodine Treatment and Hyperthyroidism
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Tc99m and I131 arent used in thyroid uptake and scan. Specically I123 is used to evaluate thyroid uptake and is also used to perform a scan mostly in addition to a pinhole collimator. Tc99m can be used just for the purpose of size and shape of thyroid but ultrasound is more specific for that and does not introduce a dose of radiation to the patient.
It possesses a particularly significant risk because it is absorbed rapidly by the thyroid gland and held there. That's why it is recommended that those who may be exposed to radioactivity in the air to pre-dose themselves with iodine pills: the non-radioactive iodine is absorbed by the thyroid gland, which does not absorb radioactive iodine when it comes along.
One way is in the endocrine system. The thyroid gland uses iodine from the blood to make thyroxine, which is secreted to regulate metabolism. Radioactive iodine is used in medicine to diagnose thyroid problems. When the the radioactive iodine is injected into the blood, it collects in the thyroid, making the thyroid more visible on radiological scans. Our modern diet sometimes does not supply enough iodine, which is why it is added to most table salt.