多层螺旋CT直、结肠充气成像及多种重建技术直、结肠癌的诊断价值  

A Diagnosis and Evaluating of Colorectal Carcinoma with MSCT Colonography

作　　者：许彪[1] 陈刚[1] 刘剔生[1] 韦璐[1] 阮天羽[1] 

机构地区：[1]广西柳州市人民医院放射科,545001

出　　处：《中国医学影像学杂志》2008年第3期192-196,共5页Chinese Journal of Medical Imaging

基　　金：广西壮族自治区卫生厅医药卫生科研课题(No.Z2006239)

摘　　要：目的：评价多层螺旋CT（MSCT）直、结肠充气成像及多种重建技术对直、结肠癌的诊断价值。材料和方法：对206例临床可疑直、结肠癌患者经肛管注入气体1000～1500ml后，行全腹快速容积扫描。扫描条件：电压120kV，电流100mA，螺距1．5，准直器宽度0．75mm，层厚1mm，横轴位数据传送至同机Volume Wizard工作站分别行MPR、SSD、Ray-sum、MIP及CTVE成像。结果：手术病理证实直、结肠癌192例，MSCT诊断189例，MSCT对直、结肠癌诊断的敏感度性、特异性及准确性分别为98．4％、92．8％及98．1％，对肿瘤的大体分型符合率为98．4％，MSCT定性诊断结、直肠癌的能力高于与超声、肠镜、癌胚抗原测定三种检查方法。结论：多层螺旋CT直、结肠充气成像及多种重建技术对直、结肠癌的诊断有较高的准确性，为外科手术方案提供重要的依据。Purpose： To discuss the evaluate of colorectal carcinoma by MSCT colonography. Materials and Methods：206 cases with suspected colorectal carcinoma underwent MSCT colonography insufflated with 1000 - 1500ml air. The parameter were used ： 120kv, 100mA, pitch 1.5, breadth of collimater 0.75mm, scan thickness l mm. All data were transfered to Volunme Wizard workstation , the source images were reconstructed into slices and three-dimensiona images （including MPR, MIP, SSD, Raysum and CTVE）. Results：Among 206 patients, 192 colorectal carcinomas were proved histologically and 189 Colorectal Carcinomas proved by MSCT colonography, the sensitivity rate, characteristic rate and accurate rate were up to 98.4%, 92.8% and 98.1%. The accurate rate of morpho logical type in colorectal carcinomas with MSCT colonography was 98.4%. The results of MSCT compared with the ultrasonic, colonoscopy and carcinoma embryo antigen （ CEA）, statistically at the same time, it was better than the other 3 methods, conclusion： MSCT colonography can improve a diagnostic accurate rate and provide very important informations in colorectal carcinoma.

关 键 词：多层螺旋CT 直 结肠癌 结肠充气成像 

分 类 号：R816.5[医药卫生—放射医学]