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目的:胃癌在CT上的表现与胃癌各型的大体病理形态改变基本一致。与钡餐和胃镜相比较,CT扫描既能显示肿瘤腔内和壁内生长情况,也显示肿瘤向腔外生长,侵犯周围器官和远处转移的情况。笔者采用饮水充盈胃腔和胃壁增强双对比的方法进行对胃的CT检查,取得较理想的效果,能很好地显示胃壁和软组织块影及肿瘤的范围、密度、浆膜浸润程度以及和周围组织的关系,淋巴结的改变情况,以达到对胃癌的诊断,病期分型、手术适应证的判定及术式选择的目的。
Objective: The performance of gastric cancer on CT is basically consistent with the gross pathological changes of various types of gastric cancer. Compared with barium meal and gastroscopy, CT scan can not only show the growth in the cavity and in the wall of the tumor, but also show that the tumor grows outside the cavity and invades surrounding organs and distant metastases. The author used a double contrast method of filling the stomach cavity and stomach wall with drinking water to perform a CT scan of the stomach, and achieved satisfactory results. It can well show the gastric wall and soft tissue mass and the extent, density, degree of serosal infiltration and surrounding of the tumor. The relationship between the organization and the status of lymph node changes to achieve the diagnosis of gastric cancer, the classification of the stage of the disease, the judgment of the surgical indication and the choice of the surgical method.