甲状腺机能亢进症^(99m)TcO_4显像特点分析

Analysis of ^(99m)TcO_4 Imaging Parameters of Hyperthyroidism

目的 了解海口地区甲状腺机能亢进患者核素甲状腺显像的特点。方法 临床证实未经治疗的甲状腺机能亢进患者 2 0 0例 ,女 15 3例 ,男 47例 ,行99mTcO4甲状腺平面显像。对所获得甲状腺影像的大小、形态、示踪剂分布特点及锥体叶的出现情况进行分析。结果 显像获得 40 0叶甲状腺。单叶甲状腺长径在 5～ 7cm的占 72 5 0 % ,分布在 169例患者中。甲状腺长径在 7cm以上的有 13 75 % ,分布在 3 3例患者。甲状腺长径甲在 5cm以下的仅有 13 75 % ,分布在 3 8例患者。单叶甲状腺横径在 2 5～ 3 5cm的占 64 2 5 % ,分布在 14 4例患者。甲状腺横径在 3 5cm以上的有 1 45 % ,分布在 6例患者中。甲状腺横径在 2 5cm以下的 3 3 5 % ,分布在 85例患者。出现甲状腺峡部增宽的 61%。甲状腺内示踪剂多呈均匀分布 ,甲状腺内有多发小结节的只占 9 0 % ,有单个“结节”的仅占 3 2 %。出现 12例有锥体叶 (占总人数的 6 0 % )。结论 甲状腺SPECT显像既无“结节”又无锥体叶 。

Objective To investigate the radionuclide 99m TcO 4 imaging parameters of thyroid in hyperthyroid patients. Methods 200 patients with hyperthyroidism including 153 women and 47 men received radionuclide 99m TcO 4 plane scintigraphy for thyroid. Then the size and anatomic configuration of thyroid, tracer distribution, and the pyramid lobe appearance were analyzed.Results 400 images of thyroid lobes were obtained from 200 patients. The length of single thyroid lobe in 169 patients were between 5cm and 7cm, in 33 patients exceeded 7cm, and in 38 patients was less than 5cm. The width of single thyroid lobe in 144 patients were between 2.5cm and 3.5cm, in 6 patients exceeded 3.5cm, and in 85 patients ware less than 3.5cm. 61% of patients had the widened narrow part of thyroid. The tracer evenly distributed in most patients, and small multinodular thyroid and single nodular thyroid were found only in 9.0% and 3.2% patients respectively. Pyramid lobe appeared in 12 patients.Conclusion SPECT imaging paremeters of the thyroids in hyperthyroid patients mainly were a diffuse goiter with the widened narrow part of thyroid and without nodule and pyramid lobe.