结节性甲状腺肿合并甲状腺癌动态增强CT  

Dynamic enhanced CT characteristics of nodular goiter with thyroid cancer

作　　者：梁欢庆[1] 翟健坤[1] 

机构地区：[1]东莞市太平人民医院CT室,广东523900

出　　处：《放射学实践》2010年第7期743-745,共3页Radiologic Practice

摘　　要：目的:探讨螺旋CT动态增强扫描在鉴别结节性甲状腺肿合并甲状腺癌时的应用价值。方法:选择25例经病理证实的结节性甲状腺肿合并甲状腺癌患者,行同层动态CT增强扫描,分别测量平扫及增强后30、60、180和300s时相同兴趣区(选择正常部位、甲状腺结节及甲状腺癌病灶)的CT值,重复测量3次,取平均值,绘制其时间-密度曲线。结果:甲状腺肿结节与腺癌结节的动态增强时间-密度曲线有所不同,其中甲状腺肿结节呈"缓升缓降型",在30s时CT值到达峰值后走势平缓;甲状腺癌结节呈"缓升缓降型",在60s时CT值达到峰值后走势较平直;正常甲状腺组织呈"速升速降型",在30s时CT值达到峰值后逐渐下降,曲线较陡。结论:甲状腺肿结节和腺癌结节的强化特点有所不同,在增强扫描30s时两者的CT值差异较大,对两者的鉴别有一定参考意义。Objective：To evaluate the characteristics of the dynmic enhanced CT in nodular goiter with thyroid cancer.Methods：25 cases of pathologically confirmed nodular goiter with thyroid cancer,underwent same slice dynamic enhanced CT scanning,the CT values were measured after 30s,60s,180s,300s,the measurement was repeated 3 times at the same region of interest,the averages were taken and the time-density curve was drawn.Results：Nodular goiter presented a ＂slow rise and gradual decline＂ type,the CT value reached the peak after 30 seconds and followed by a plateau.The thyroid carcinoma presented also a ＂slow rise and gradual decline＂ type,but the CT value reached the peak after 60 seconds.The normal thyroid tissue presented a ＂quick rise and quick decline＂ type,at 30 seconds,the CT value reached the peak and then it declined slowly,the curve was steeper.Conclusion：The dynamic enhanced CT characteristic of nodular goiter and thyroid carcinoma is different at 30 seconds after contrast administration,the difference of CT value is most remarkable,and thus provides certain value for differentiation of both diseases.

关 键 词：结节性甲状腺肿 甲状腺癌 体层摄影术 X线计算机 动态增强扫描 

分 类 号：R581[医药卫生—内分泌] R736.1[医药卫生—内科学] R816.7[医药卫生—临床医学]