多层面螺旋CT仿真内窥镜在大肠肿瘤的临床应用  

Clinical Application of Multi-slice Helical CT Virtual Endoscopy in Colorectal Carcinoma

作　　者：郭青[1] 沈国强[1] 周良平[1] 郭天康[1] 徐香玖[1] 黄刚[1] 

机构地区：[1]甘肃省人民医院,甘肃兰州730000

出　　处：《实用放射学杂志》2001年第7期494-496,共3页Journal of Practical Radiology

摘　　要：目的　探讨多层面螺旋CT仿真内窥镜 (multi -slicehelicalCTvirtualendoscopy ,MSCTVE)诊断大肠肿瘤的检查方法和临床应用价值。方法　 2 6例怀疑有大肠肿瘤的患者行结肠、直肠容积扫描 ,电压 12 0kV ,电流 2 5 0mA ,层厚 5mm ,螺距 (pitch) 6,薄层重建图像并传输至ADW 3 .1工作站 ,应用Navigator导航软件生成仿真内窥镜图像 ,模拟纤维结肠镜 (FC)观察大肠肿瘤 ,并与纤维结肠镜及手术病理结果对比。结果　肿瘤发生部位直肠 14例 ,乙状结肠 8例 ,1例肿瘤连续侵犯直肠及乙状结肠 ,所见肿瘤部位、大小、表面形态、数目与纤维结肠镜及手术结果基本相同 ,具有良好的对应性。结论　多层面螺旋CT仿真内窥镜作为一种无创、安全、方便的检查手段在大肠肿瘤的诊断方面具有较高的临床使用价值。Objective To evaluate the methodology and the clinical usefulness of multi-slice helical CT virtual endoscopy(MSCTVE).Methods Twenty-six cases by suspected colorectal carcinoma underwent multi-slice helical CT virtual endoscopy after colon was cleaned and insufflated with air.The parameters were used:120 kV,250 mA,pitch 6,reconstructure thickness 2.5 mm,interval 1.0.All data sets were transferred to ADV 3.1 workstation,CTVE reconstruction were done with Navigator and used CTVE to view colorectal and rectum carcinoma.Of 26 cases,16 cases were proved by colonoscopy and 22 cases by operation.Results 14 cases carcinoma in rectum,8 cases in sigmoidcolon,1 case involved both rectum and sigmoidocolon.MSCTVE results were similar to colonography.Conclusion Multi-slice helical CT virtual endoscopy has clinical usefulness for detecting colorectal and rectum carcinoma as it is non-invasive,safe,feasible.MSCTVE is a supplement to colonoscopy especial in incomplete colonoscopy.

关 键 词：多层面螺旋CT 仿真内窥镜 大肠肿瘤 MSCTVE 

分 类 号：R814.42[医药卫生—影像医学与核医学] R735.34[医药卫生—放射医学]