目的 探讨螺旋CT多期扫描技 术在胃癌早期诊断中的临床应用价值。 方法 利用多层螺旋CT机对88例经胃镜 证实为胃癌的患者行CT平扫和动脉期、 实质期、静脉期动态增强扫描，对其影 像学表现进行分析，并对病情和分期进 行诊断，且需和手术及病理结果进行对 比。结果 88例患者经螺旋CT多期扫描检 查后，结果显示共检出88个病灶，螺旋 CT多期扫描的检查率为100%(88/88)， 患者均为进展型胃癌。与病理分期检查 结果比较，螺旋CT对胃癌进行TNM的分 期总准确率为80.68%。其中，≤T2期判 断准确率为87.50%，T3期判断准确率为 74.36%，T4期判断准确率为84.01%。 总体来看，多层螺旋CT对于早期胃癌 (≤T2)的准断准确率相对较高。结论 螺 旋CT多期扫描技术能对胃癌早期诊断准 确性高，且操作简单、无创伤、适应人 群广，能为临床手术提供影像资料，具 有重要的临床应用价值。

Objective To investigate the clinical value of spiral CT multi-phase scanning technique in early diagnosis of gastric cancer. Methods 88 cases confirmed by endoscopy for gastric cancer patients underwent CT scan and arterial phase, parenchymal phase and venous phase dynamic contrast-enhanced scan with multi-slice spiral CT, Analyze the imaging findings, and the disease and staging were diagnosed and compared with the results of surgery and pathology. Results 88 patients were scanned by spiral CT, the results showed that 88 lesions were detected, and the rate of spiral CT scan was 100% (88/88),there were no progressive gastric cancer in all patients. Compared with the pathological staging examination, the overall accuracy rate of CT staging for gastric cancer with spiral TNM was 80.68%.Among them, the judgment accuracy of ≤T2 phase was 87.50%, the judgment accuracy of T3 phase was 74.36%, and the accurate rate of T4 phase was 84.01%. Overall, multislice spiral CT in early gastric cancer (T2) in the diagnosis accuracy rate is relatively high. Conclusion Spiral CT multi-phase scanning technique is of high accuracy for early diagnosis of gastric cancer, the utility model has the advantages of simple operation, no trauma and wide adaptation to people, and can provide image data for clinical operation, and has important clinical application value.