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目的 比较二期和三期增强扫描在胰腺癌发现和诊断上的差异探索建立最佳扫描常规。方法 42例胰腺癌病人分为 :A组 2 6例 ,行三期扫描 ,分别为增强后平均延迟 2 8s为动脉期 ,10 5s为门脉期和 30 0s为延迟平衡期。B组 16例 ,行二期扫描 ,分别延迟 2 8s为动脉期和 130s为门脉期。比较各期扫描正常胰腺组织与肿瘤的密度差异和肝转移瘤的发现率。结果 门脉期扫描胰腺和癌肿的密度差别最显著 ,门脉后期显示肝转移瘤最清楚。结论 胰腺癌应以增强后二期扫描作为常规。
Objective To compare the differences between two stages and three stages of enhanced scan in the detection and diagnosis of pancreatic cancer and explore the best routine of scanning. Methods Forty-two patients with pancreatic cancer were divided into two groups: group A (26 cases) with three stages of scanning. The average delay was 28 seconds for the enhancement of arterial phase, 105s for the portal phase and 30s for the delayed balance period. Group B, 16 cases, two-line scan, respectively, delayed 28s for the arterial phase and 130s for the portal phase. The difference of density of normal pancreas and tumor and the incidence of liver metastases were compared between the two groups. Results The difference in density between the pancreas and the cancer in the portal venous scan was the most significant. The late stage of the portal vein showed the most clear liver metastases. Conclusions Pancreatic cancer should be routinely performed with an enhanced second-stage scan.