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目的 探讨提高胃癌分期准确性的最佳螺旋CT检查方法。方法 胃癌螺旋CT三期增强 96例 ,双期增强取三期的前两期 ,门脉期增强仅取三期的门脉期 ,中间期薄层增强并MPR 97例 ,分别与手术病理进行对照。结果 胃癌螺旋CT三期、双期、中间期薄层并MPR和门脉期增强扫描的TNM分期准确性分别为 82 .3 %、77.1%、80 .4%和 75 .0 %。结论 胃癌术前分期首选螺旋CT三期增强 ,其次为中间期薄层增强并MPR。
Objective To investigate the best helical CT method for improving the staging accuracy of gastric cancer. Methods Ninety-three cases of gastric cancer with spiral CT enhancement were enrolled in this study. Two-phase enhancement was performed in the first two phases of the third phase. The portal phase was enhanced only in the portal phase of three phases. Ninety-seven MPRs were enhanced in the middle phase. . Results The TNM staging accuracy of three-phase, double-phase, middle-phase thin-section MPR and portal venous phase enhanced CT in gastric cancer were 82.3%, 77.1%, 80.4% and 75.0% respectively. Conclusion The preoperative staging of gastric cancer preferred spiral CT enhanced third, followed by thinning of the middle and MPR.