摘要
目的:评价多层螺旋CT对胃癌术前分期的准确性。方法:对78例经胃镜活检证实为胃癌的患者进行MSCT增强扫描,其中67例经历了手术治疗,并获得术后病理结果。由两位资深放射科医师对影像学资料进行分析,轴位和MPR影像用于术前TNM分期,N分期分别采用UICC TNM分期和日本分期,两种分期的准确性比较采用McNemar检验进行统计学分析。结果:轴位和轴位结合MPR影像的总体T分期准确率分别为67%(45/67)和78%(52/67)(P<0.05),总体N分期的准确率分别是61%(41/67)和67%(45/67)(P>0.05,日本分期),54%(36/67)和60%(40/67)(P>0.05,UICC TNM分期),总体M分期准确率为93%(73/78)。结论:服水低张动态增强MSCT对胃癌术前TNM分期具有很高的准确性,MPR能提高胃癌T分期的准确率,但不能提高N分期的准确率。
Objective： To evaluate the diagnostic accuracy of multi-slice computed tomography （MSCT）for the preoperative staging of gastric cancer. Methods： 78 patients with gastric cancer were given preoperative MSCT.Among the 78 patients, 67 patients were undergone surgery and gained postoperative pathological results. All images were analyzed by two radiologists independently, and the TNM staging were evaluated with the axial CT images and MPR images. The UICC TNM and Japanese classifications were used for N staging. Differences in staging accuracy for T and N staging were assessed by the McNemar test. Results： The overall T staging accuracy of the axial CT images and its combination with the MPR images was 67% （45/67）and 78%（ 52/67 ）respectively （P〈0.05）; the overall N staging accuracy ofthe two images above was 61% C41/67 ）and 67% （45/67）respectively （P〉0.05, Japanese classifications）, when using UICC TNM classifications, that was 54%（ 36/67 ）versus 60% （40/67）respectively （P〉0.05）; the overall M staging accuracy was 93%（ 73/78 ）. Conclusions： Dynamic enhanced MSCT with drinking water and injecting low tension medicine has high accuracy for the preoperative TNM staging ofgastric cancer. Using MPR images enables preoperative T staging for gastric cancer more accurately, but it failed in N staging.
出处
《现代生物医学进展》
CAS
2008年第3期491-493,484,共4页
Progress in Modern Biomedicine
关键词
胃肿瘤
体层摄影术
X计算机
多层螺旋CT
肿瘤分期
Stomach neoplasms
Tomography
X-raycomputed
Multi-slice CT （MSCT）
Neoplasmstaging
