CT对胃癌的诊断能力

Capability of CT scanning for diagnosing gastric carcinoma

目的分析胃癌的CT表现,并评价CT对胃癌的诊断能力。方法22例经胃镜、活检病理证实的胃癌病例均经CT扫描,其中17例手术。胃对比剂用1.5%泛影葡胺或水。22例均于检查前10min肌注654-210mg～20mg。其中,12例经肘静脉团注法注入60%泛影葡胺80mL增强扫描。结果CT清楚地显示了胃癌病变的全貌、病变与周围脏器的关系,但显示腹部淋巴结转移及胃癌的定性方面有一定的局限性。结论胃CT检查能首先发现病变,如结合胃肠钡餐造影、纤维胃镜以及超声检查,能为临床诊断及手术切除提供可靠的依据。

Objective To analyze the CT findings of gastric carcinoma and to evaluate its diagnostic capability. Methods Twenty - two patients with clinically and pathologically proved gastric carcinoma underwent CT scans , in whom 17 cases redaived surgical resection. Megalucamine diatrizoate（1.5 % ） or water were selected as a gastric contrast medium. All patients received an intramuscular administration of 654- 2（10 to 20 rag） at 10 minutes before CT scanning. Twelve patients underwent additional enhanced CT scans after intravenous bolus injection of 60 % megalucamine diatrizoate（80 mL）. Results CT scans without and with contrast medium clearly revealed the outline of gastric carcinoma lesions and the relationship between the lesions and surrounding organs but had certain limit to reveal the metastasis of abdominal lymphonodes and to perform the qualitative diagnosis of gastric carcinoma. Conclusion Gastric CT scanning can early find the lesions, if integration of CT scan and gastrointestinal barium meal examination, endoscopy or uhrasonography, it can provide the reliable evidence for clinical diagnosis or surgical resection of gastric carcinoma.