Thyroid Scintigraphy in Hyperthyroidism

Clinical techniques in small animal practice Pub Date : 2006-02-01 DOI:10.1053/j.ctsap.2005.12.002

Michael R. Broome DVM, MS, Dipl. ABVP

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引用次数: 23

Abstract

Thyroid scintigraphy is a nuclear medicine procedure that produces a visual display of functional thyroid tissue based on the selective uptake of various radionuclides by thyroid tissue. Thyroid scintigraphy provides valuable information regarding both thyroid anatomy and physiology and can play an integral role in the diagnosis and management of cats with hyperthyroidism. Thyroid scintigraphy allows the direct visualization of the functional adenomatous thyroid tissue responsible for the development of hyperthyroidism. For this reason, thyroid scintigraphy will allow the diagnosis of hyperthyroidism before laboratory tests are consistently abnormal. Thyroid scintigraphy can also exclude a diagnosis of hyperthyroidism in cats with thyroid hormone elevations of nonthyroidal origin. Thyroid scintigraphy provides an additional method for determining the relative severity of thyroid disease that is less affected by the presence of concurrent nonthyroidal illness than laboratory evaluations. When treating hyperthyroid cats with radioiodine, the lowest effective dose should be administered. In an effort to administer the lowest radioiodine dose possible, the volume of adenomatous thyroid tissue present in the individual hyperthyroid cat should be considered. Thyroid scintigraphy provides an excellent method for evaluating the size of hyperfunctional thyroid tissue that is not limited by the presence of ectopic or intrathoracic thyroid tissue. Thyroid scintigraphy also provides valuable information in the diagnosis and evaluation of hyperthyroid cats with thyroid carcinoma.

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甲状腺机能亢进的甲状腺显像

甲状腺闪烁成像是一种核医学程序，根据甲状腺组织对各种放射性核素的选择性摄取，产生功能性甲状腺组织的视觉显示。甲状腺显像提供了关于甲状腺解剖和生理的有价值的信息，可以在猫甲状腺功能亢进的诊断和管理中发挥不可或缺的作用。甲状腺显像可以直接显示导致甲状腺功能亢进的功能性甲状腺腺瘤组织。因此，甲状腺显像可以在实验室检查异常之前诊断甲状腺功能亢进。甲状腺显像也可以排除非甲状腺源性甲状腺激素升高的猫甲状腺功能亢进的诊断。甲状腺闪烁成像为确定甲状腺疾病的相对严重程度提供了一种额外的方法，这种方法受并发非甲状腺疾病的影响比实验室评估要小。当用放射性碘治疗甲状腺功能亢进的猫时，应给予最低有效剂量。在尽可能给予最低放射性碘剂量的努力中，应考虑个体甲状腺功能亢进猫的甲状腺腺瘤组织的体积。甲状腺闪烁显像提供了一个很好的方法来评估甲状腺功能亢进组织的大小，不受存在异位或胸内甲状腺组织的限制。甲状腺闪烁成像也为甲状腺功能亢进的猫甲状腺癌的诊断和评估提供了有价值的信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Clinical techniques in small animal practice

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