正常成人甲状腺CT表现

THYROID'S CT FINDINGS IN EIGHTY NORMAL ADULTS

目的 :研究正常成人甲状腺 CT表现特点 ,为甲状腺疾病的 CT诊断提供参考依据。方法 :对 80例正常成人甲状腺增强前后进行动态 CT扫描 ,划线法测量腺体大小并对其密度值进行统计学分析。结果 :1甲状腺边缘连线均完整、与双侧颈鞘血管及食管之间有低密度脂肪间隙相隔 ,与气管壁及颈前肌之间无类似低密度间隙存在 ;2部分正常甲状腺内平扫可见宽度≤2 mm的裂隙状略低密度区 ;3增强后 3m in内甲状腺强化最明显。结论 :采用划线法测量甲状腺大小 ,可避免腺体形态差异造成测量误差 ;掌握正常甲状腺的各种 CT表现特点 ,有利于提高甲状腺疾病的

Object:To study thyroid's various CT finding features of normal adults and provide reference grounds for thyroid's disease diagnosisMethods:Thyroids of eighty normal adults were scanned by CT in different periods for preand postcontrast,the sizes measured with drawing line method (DLM) and CT value analyzedResults:①The edge line of the thyroid is continuous;there was low density fatty space among normal thyroid,cervical blood vessels and esophagus;and no space among thyroid,adjacent anterior cervical muscles and bronchus; ②there were low density regions which ≦2mm in some normal thyroid on plain CT;③The thyroid contrast was most apparent after three minutes contrastConclusion:The measuring error can be avoided for the appearant differences when the thyroids size is measured with DLM,and to make clear CT finding features of normal thyroids is beneficial to improve the CT diagnosis level of thyroid disease