摘要目的提高胃癌术前诊断的准确性,评价血管造影(DSA)在胃癌浸润深度诊断中的作用；观察胃窦癌淋巴结转移规律与血供的关系。方法根据胃周的主要血管在进入胃壁各层的同时逐级分支的原理,通过识别走行于不同层次的血管所发生的变化判断胃癌的浸润深度。观察101例胃癌患者血管造影结果，与手术及病理结果进行对比,得出准确率并进行评价；观察35例经肝总动脉及腹腔动脉血管造影的胃窦癌的主要供血血管。结果 101例患者血管造影结果对胃癌浸润深度诊断的准确率为79.2%；胃窦癌的主要供血血管是胃网膜右动脉。结论血管造影对胃癌浸润深度诊断的准确性较高，为胃癌浸润深度的术前诊断提供了新的途径；胃窦癌的主要供血血管与淋巴结转移的主要方向存在着一致性，这可能是胃窦癌易出现幽门下淋巴结转移的原因。

abstractsObjectives　To increase the accuracy of preoperative diagnosis of gastric cancer and to evaluate the approach for detecting the invasion depth by of gastric cancer with digital substaction angiography (DSA).　Methods　Gastric vessels were divided and subdivided into branches in different layers of the gastric wall. The vessels were first divided into parietal branch in the muscle layer. The parietal branch was then subdivided into subsidiary anastomotic channels in the mucosal layer. Invasion of gastric cancer made corresponding vessel branches narrow or obliterated for detecting its depth by vascular changes in different vessel branches. Analysis of 101 patients showed that, the accuracy rate was obtained by comparing the DSA results with postoperative pathological findings. Hepatica communis DSA was performed at in 35 cases of lower third gastric careinoma focusins on the main blood supply vessels.　Results　The accuracy rate of DSA diagnosis in the 101 patients was 79.2%; most lower third gastric carcinomas had blood supply from the right artery in the gastric omentum.　Conclusions　DSA for detecting the invasion depth of gastric cancer is practical and accurate. For lower third gastric cancer, the runing of major blood supply vessels is as the same as lymph flow. This may contribute to the metastasis of lower third gastric carcinoma.