Thyroid flow imaging

Thyroid blood flow imaging is performed with the imaging agent 99mTcO4-imaging, because it can be taken up and concentrated by the gonad tissue, reflecting its uptake function. In addition to myocardial cell uptake, it can also accumulate in hyperactive parathyroid tissue. The thyroid gland is the largest endocrine gland in the human body, and its blood supply is very rich. After the radionuclide is injected intravenously, it can be dynamically collected after flowing through the thyroid gland to reflect its blood flow. Usually done with static imaging. Basic Information Specialist classification: examination classification: endocrine examination Applicable gender: whether men and women apply fasting: not fasting Tips: Pay attention to the normal diet before the examination, pay attention to normal work and rest, and prevent endocrine disorders. Normal value After the "projectile" intravenous injection imaging agent, the subclavian vein imaging was gradually observed, and the double carotid artery imaging was performed for 8-12 seconds, bilaterally symmetric; jugular vein imaging was observed in 12-14 seconds; thyroid imaging was performed in about 16 seconds. Then gradually increased, until about 22 seconds, the radioactivity in the thyroid exceeded the arterial vein, and the radioactive distribution gradually became uniform. Clinical significance Observe thyroid perfusion in hyperthyroidism and hypothyroidism. Understand the blood supply of thyroid nodules and judge their nature. 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, appetite hyperthyroidism, with weight loss, tachycardia, special eye signs (exophthalmos), goiter, thyroid vascular murmur, tremor and other performance. 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. People who need to be examined: Patients with suspected hyperthyroidism and hypothyroidism. Precautions 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. Thyroid blood flow imaging, high requirements in injection, need to choose larger venous blood vessels, the volume of imaging agent is 0.5ml, to ensure the quality of the projectile, if there is thyroid nodules, should be injected in the contralateral elbow vein Agent. Inspection process Method and route of administration: The patient was placed in a flat bed, the neck was fully exposed to the thyroid gland, and the larger venous vessels of the elbow were selected, and the "shot" injection was administered and simultaneously collected dynamically. Not suitable for the crowd Inappropriate crowd: temporarily unknown. Adverse reactions and risks Nothing.

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