螺旋CT后处理技术在肺癌新分期中的临床价值  

Application of Imaging Postprocessing of Spiral CT in the Staging of Lung Cancer

作　　者：向之明[1] 黄芳[1] 梁翠媚[1] 许向东[1] 谭理连[2] 

机构地区：[1]广州番禺区人民医院放射科,广州511400 [2]广州医学院附属第二医院放射科,广州510260

出　　处：《放射学实践》2007年第8期821-825,共5页Radiologic Practice

摘　　要：目的：评价螺旋CT后处理技术对肺癌术前分期的诊断价值。方法：选取106例经SCT检查并经病理证实的肺癌患者,采用国际最新TNM分期标准进行诊断,利用多平面重组（MPR）、最大密度投影（MIP）、表面遮盖显示（SSD）、容积再现（VR）技术对所有CT扫描资料进行图像后处理,结合横断面图像评价其在肺癌术前分期的作用,并与横断面图像的术前分期进行对照。结果：对T分期,T1、T2、T3、T4横断面图像诊断符合率分别为77.3%、60.6%、60.7%、60.3%,后处理图像诊断符合率分别为86.4%、90.9%、89.3%、87.0%;对N分期,N0、N1、N2、N3横断面图像诊断符合率分别为84.6%、68.1%、63.6%、64.2%,后处理图像诊断符合率分别为92.3%、90.9%、90.9%、85.7%;除T1、N0外,T1-T3及N1-N3后处理图像和横断面图像诊断符合率比较差异有显著性意义（P〈0.05）。而后处理图像对远处转移也可提供一定帮助。结论：螺旋CT后处理技术能提高肺癌TNM分期的准确性,能有效增加和提高横断面CT的诊断信息。Objective：To evaluate the role of spiral CT imaging postprocessing techniques in preoperative TNM staging of lung cancer. Methods： 106 patients with pathologically confirmed lung cancer underwent spiral CT, the new revised TNM staging method of lung cancer was taken as criterion of diagnosis. We reconstructed imaging by using different postprocessing tschniques such as MPR, MIP, SSD, VR,and assessed the TNM staging capabilities by using postprocessing imaging and compared the results with axial CT images. Results：In T staging,the accuracy rates of axial CT images in T1 -T4 staging were 77.3% ,60.6% ,60.7%, 60.3% ,for postprocessing images,the accuratcy rates were 86.4% ,90.9% ,89.3%, 87.0% ;In N staging,the accuracy rates of axial CT images in N0 -N3 staging were 84.6,68.1% ,63.6% ,64. 2%,but they were 92.3% ,90.9 % ,90.9 % ,85.7 % in postprocessing images. The postprocessing images were superior to axial CT images in T1 -T3 and N1- N3 staging of lung cancer but there was no significant difference in T1 ,No staging; In metastasis, the postprocessing images may be helpful to the TNM staging of of lung cancer. Condusion：Postprocessing techniques of spiral CT can improve the accuracy rate of TNM staging of lung cancer,and can represent a useful supplement to axial CT.

关 键 词：体层摄影术 X线计算机 图像后处理 肺肿瘤 

分 类 号：R734.2[医药卫生—肿瘤]