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目的 评价CT扫描对胃肿瘤T分期准确性。 方法 采用动态或螺旋CT增强扫描及口服清水法 ,前瞻性研究 86例胃部肿瘤 ,其CT表现与大体病理标本进行对照。 结果 15例健康对照组 ,增强CT显示胃壁为 2或 3层结构 :明显强化内膜层、低密度中间层和略高密度外膜层 ,在组织学上分别与粘膜层、粘膜下层和肌浆膜层相对应。 6 2例手术切除病灶中 ,CT对早、晚期胃癌检测敏感率分别为 5 0 %、85 .4%。大体分类准确率分别为 81.5 %、86 %。 结论 动态或螺旋CT对 80 %左右胃癌患者能准确诊断肿块的位置、大小、大体观及浆膜侵犯 ,并显示不同种类胃肿瘤的不同特征表现。
Objective To evaluate the CT scan accuracy of T staging in gastric cancer. Methods Dynamic or spiral CT enhanced scan and oral clear water method were used to prospectively study 86 cases of gastric tumors. Their CT findings were compared with gross pathological specimens. RESULTS: In 15 healthy controls, enhanced CT showed a 2- or 3-layer structure of the stomach wall: marked enhancement of the intimal layer, the low-density middle layer, and the slightly high-density outer layer, histologically associated with the mucosa, submucosa, and sarcoplasmic resection, respectively. Film layer corresponds. Of the 62 cases that had undergone surgical resection, CT sensitivity to early and late gastric cancer detection was 50% and 85.4%, respectively. The general classification accuracy was 81.5% and 86%, respectively. Conclusion Dynamic or spiral computed tomography can accurately diagnose the location, size, gross view, and serosal invasion of 80% of gastric cancer patients, and show different characteristics of different types of gastric cancer.