X线、CT、超声波已广泛应用于临床。闪烁扫描的特点,从解剖学观点说比X线及CT差,但它能反应组织和病灶的代谢或机能,以下分别介绍核医学闪烁扫描在耳鼻喉科应用的现状。 1.用于甲状腺疾患诊治:(1)甲状腺闪烁扫描术是鉴别弥漫性甲状腺肿、突眼性甲状腺肿、慢性甲状腺炎、甲状腺腺瘤等不可缺少的检查,用~(123)碘测定其摄取率,突眼性甲状腺肿24小时摄取70%以上,慢性甲状腺炎为55%左右。用~(99m)TcO_4~-扫描突眼性甲状腺肿显示甲状腺密度均匀,而涎腺和甲状腺以外的软组织并不显示。(2)用于结节性甲状腺肿诊断,甲状腺结节扫描,一般迳用~(99m)TcO_4~-,结节部显示缺损者为冷结节,其中约30%为恶性;结节部放射性高度集中者 X-ray, CT, ultrasound has been widely used in clinical. The characteristics of scintigraphy are worse than X-ray and CT in terms of anatomy, but it can reflect the metabolism or function of tissues and lesions. The current status of nuclear medicine scintigraphy used in otolaryngology is introduced respectively below. 1. For thyroid disease diagnosis and treatment: (1) thyroid scintigraphy is to identify diffuse goiter, goiter, chronic thyroiditis, thyroid adenoma and other indispensable examination, with ~ (123) iodine determination of their intake Rate, sudden goiter uptake more than 70% 24 hours, chronic thyroiditis is about 55%. ~ (99m) TcO_4 ~ - scan of the goiter showed uniform thyroid density, salivary glands and thyroid other than the soft tissue does not show. (2) For the diagnosis of nodular goiter, thyroid nodules, usually ~ 99mTcO 4 ~ -, the nodules showed defects were cold nodules, of which about 30% of malignant; nodular radioactivity Highly concentrated