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目的：评价CT在胃癌诊断中的作用。材料与方法：对37例胃癌病人的CT检查进行了总结，其中男20例，女17例，绝大部分属中晚期，其中部分有邻近及远处转移，全部病例经手术和病理证实。检查前空腹，上检查床前10～15分钟肌注654～220毫克，分2～3次口服水1000毫升，扫描部位以剑突平面至脐平面，先作平扫，然后再行增强扫描。结果：所有37例在CT检查时都清楚地显示了肿瘤病变，在CT评估可行肿瘤切除的33例中有32例作了手术切除，符合率达97％，CT判断淋巴结转移的符合率为74％。结论：CT具有很高的空间和密度的分辨率，特别是在增强以后，能清晰显示胃壁病变的形态、大小，以及邻近组织受侵的范围，有否局部及远处转移，对外科手术评估与处置可有很大的帮助。
Objective: To evaluate the role of CT in the diagnosis of gastric cancer. Materials and Methods: CT scans of 37 patients with gastric cancer were reviewed. Among them, 20 were males and 17 were females. The vast majority belonged to the middle and late stages. Some of them had metastases in the adjacent and distant regions. All cases were confirmed by surgery and pathology. Before the examination, fasting, check the intramuscular injection of 654 to 220 mg 10 to 15 minutes before the bed, divided into 2 to 3 oral water 1000 ml, scanning the site to the umbilical plane xiphoid, first for plain scan, and then re-enhanced scan. RESULTS: All the 37 cases clearly showed tumor lesions during CT examination. Thirty-two of the 33 cases with feasible tumor resection were surgically resected. The coincidence rate was 97%. The coincidence rate of CT for lymph node metastasis was 74. %. Conclusion: CT has a high spatial and density resolution, especially after the enhancement, it can clearly show the morphology, size of the gastric lesions, and the extent of invasion of adjacent tissues, whether there is local and distant metastases, and evaluate surgical procedures. And disposal can be of great help.