Objective To investigate helical CT characteristics of gastric carcinoma,and evaluate the diagnostic value of incremental helical CT for TNM staging of gastric carcinoma.Methods Incremental helical CT scans were performed on 42 patients with gastric carcinoma,given the different oral contrast media,and the result was compared with pathological diagnosis.Results (1)Different oral contrasts varied in showing the details of lesions.And it was proved that water contrasts were the best.(2)The image of the foci became more prominent in all the 42 patients of gastric carcinoma showed significant enhancement in incremental helical CT.(3)The accuracy value of incremental helical CT diagnosing TNM-staging of gastric carcinoma was 88.1%.Conclusion The results reveal that water oral contrast should be administered to diagnose gastric carcinoma by incremental helical CT,and this procedure is of a high diagnostic value to preoperative staging of gastric carcinoma.
 李荫太, 高剑波. 进一步重视螺旋CT对胃肠道肿瘤的诊断价值. 中华放射学杂志2001(4)  Cho J S, KIM J K, RHO S M. Preoperative assessment of gastric carcinoma:value of two-phase dynamic CT with mechanical iv.injection of contrast material, 1994  彭卫军, 周康荣, 秦新裕. 应用动态CT和水充盈技术行胃癌CT分期和手术对照研究, 1994(1)  周康荣. 螺旋CT, 1998  Minami M, KAWAUCHI N, ITAI Y. Gastric tumors:radiology-pathologic correlation and accuracy of T staging with dynamic CT, 1992(2)