肝外胆管癌的16层螺旋CT诊断  

Research on 16-slice Spiral CT Diagnosis of Extrahepatic Biliary Carcinoma

作　　者：温平贵 郭勇[1] 杜秀琴[1] 

机构地区：[1]周口市中心医院CT和MR室,河南466000

出　　处：《放射学实践》2009年第4期405-407,共3页Radiologic Practice

摘　　要：目的:探讨肝外胆管癌的16层螺旋CT征象及诊断价值。方法:对全部受检病例行16层螺旋CT平扫加动态增强扫描,然后进行多平面重组及胆管曲面重组;回顾性分析35例经手术(活检)病理证实的肝外胆管癌的各期CT表现。结果:胆总管癌19例,肝门区胆管癌16例。直接征象为胆管壁局限性不规则增厚、环状不均匀增厚、结节状或肿块状改变。胆管曲面重组可直观显示病变范围及狭窄或闭塞全貌。增强后肿瘤呈均匀或不均匀强化,以静脉期强化为主。结论:合理应用多平面重组、曲面重组等后处理技术,可以很好显示肝外胆管癌的直接征象,对确立诊断及指导临床治疗或手术具有重要意义。Objective：To explore the features and diagnostic value of 16-slice CT of extrahepatic biliary carcinoma. Methods：All the patients underwent 16-slice CT plain scan and dynamic enhanced CT scan associated with multi-planar reconstruction （MPR） and curved planar reconstruction （CPR）. CT findings of 35 cases with pathologically-proved extrahepatic biliary carcinoma were retrospectively summarized and analyzed. Results： 19 cases of extrahepatic biliary carcinoma and 16 cases of hilar eholangioearcinoma were enrolled in this study. The direct signs were focal irregularity of the hile duct,circular and asymmetric thickening of the bile duct, and nodular or tumorous changes. Cruved planar reconstruction showed well the extent and narrowing or obstruction of the duct in whole. After contrast administration there was homogenous or in homogenous enhancement of the tumor, mainly at venous phase. Conclusion： Rational use of the post-processing techniques such as MPR and CPR can show better the direct signs of extrahepatic billiary carcinoma. It is of great importance to the establishment of diagnosis and guidance to the clinical treatment or operation.

关 键 词：胆管肿瘤 体层摄影术 X线计算机 图像处理 计算机辅助 

分 类 号：R735.8[医药卫生—肿瘤]