MSCT在胃癌术前CTNM分期中的应用

Clinical application of MSCT for preoperative CTNM staging of gastric carcinoma

目的:探讨多层螺旋CT(MSCT)在胃癌术前CTNM分期中的价值,为术中方案的确定提供影像学依据。方法:对92例临床胃癌病例进行MSCT平扫加增强扫描及容积重建后处理,显示胃癌累及范围、大小、周围组织侵犯及局部淋巴结情况,进行术前CTNM分期。结果:MSCT术前胃癌CTNM分期结果与手术病理对比有较高的准确性,胃癌CT分期总的准确率为91.3%,术前切除评估总的准确率为95%。结论:MSCT在胃癌诊断、术前分期及评估手术切除方案等方面具有较高价值,可列为该病种常规术前检查;扫描前准备、扫描方案设计、重建后处理等都会影响病变的显示及CTNM分期。

Objective：To evaluate the diagnosis value of MSCT for preoperative CTNM staging of gastric carcinoma and provide the imaging evidence for surgical operation.Methods：Ninety-two gastric carcinoma patients were scanned on 8-slices spiral-CT including plain scans and dual phase enhanced scans respectively.The source images were performed three-dimensional reconstruction.The tumor location,bound,size,estimate surrounding tissue extension and regional lymph nodes metastasis were observed.The preoperative CTNM staging of gastric carcinoma was performed.Results：MSCT was a promising technique for detection and preoperative CTNM staging for gastric carcinoma,the accuracy of the preoperative CTNM staging of gastric carcinoma and preoperative dissection estimation were 91.3%,95% respectively.Conclusions：The combination of the enhanced MSCT and 3-D reconstruction of the source image can elevate the accuracy of the TNM staging of gastric carcinoma.The technique is valuable in guiding the treatment planning and may be used as a principle method in the diagnosis of gastric carcinoma.