Thyroid uptake 131 iodine test

The 131 iodine (131I) test of the thyroid gland is based on the principle that iodine is one of the raw materials for the synthesis of thyroid hormone from the thyroid gland. Radioactive 131I can also be taken up and involved in the synthesis of thyroid hormones, the amount and rate of ingestion and thyroid function. closely related. The 131I is introduced into the subject, and the change of the radioactivity count of the thyroid site is measured by an in vitro detecting instrument, and the state of 131I being taken up by the thyroid gland can be known, thereby judging the function of the thyroid gland. Basic Information Specialist Category: Otolaryngology Classification: Radionuclide Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Hypothyroidism. It is caused by insufficient synthesis or secretion of thyroid hormone. According to the age of onset, it can be divided into three types, namely, small illness (cretinism), juvenile and adult hypothyroidism (severely called mucinous edema), and the clinical manifestations may be different. Normal value: 3 hours photo 131 iodine rate: 5% -25% 24 hours 131 iodine rate: 20%-45% Above normal: Hyperthyroidism is an autoimmune disease. There are fear of heat, sweating, agitation, excessive appetite, with weight loss, tachycardia, special eye signs (exophthalmos), goiter, thyroid murmur, tremor and other performance. negative: Positive: Tips: Pay attention to diet, and rest before check to prevent endocrine disorders. Normal value The iodine rate was 3-25% at 3 hours, and the iodine rate at 24 hours was 20-45%. Clinical significance Abnormal result 1. Hyperthyroidism is called hyperthyroidism, also known as toxic diffuse goiter, Graves disease, is an autoimmune disease. Can be afraid of heat, sweating, agitation, excessive appetite, with weight loss, tachycardia, special eye signs (exophthalmos), goiter, thyroid murmur, tremor and other performance. Basal metabolism (BMR) measurements and thyroid radionuclide computed tomography (ECT) have diagnostic value. 2. Hypothyroidism, referred to as hypothyroidism. It is caused by insufficient synthesis or secretion of thyroid hormone. According to the age of onset, it can be divided into three types, namely, small illness (cretinism), juvenile and adult hypothyroidism (severely called mucinous edema), and the clinical manifestations may be different. Patients who need to be examined have abnormal thyroid function. Low results may be diseases: hypothyroidism accompanied by high mental disorders may result in diseases: hyperthyroidism accompanied by mental disorders, endemic goiter, high iodine goiter considerations Forbidden before examination: pay attention to normal diet, pay attention to normal work and rest, and prevent endocrine disorders. Requirements for inspection: Actively cooperate with the doctor's request. Inspection process method (1) Stop iodine-rich foods and drugs and other substances that affect thyroid iodine absorption (such as seafood, iodine, thyroid hormone, anti-thyroid drugs, etc.) for 2 to 4 weeks. (2) Oral 131I solution or capsule 74 ~ 185kBq (2 ~ 5μCi), and an equal amount of 131I was placed in the neck model as a standard source. The thyroid site, standard source and background count rate were measured at 2h, 4h and 24h after taking the drug. (3) Measuring instrument: A power meter. Not suitable for the crowd Inappropriate crowd: temporarily unknown. Adverse reactions and risks Nothing.

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