螺旋CT 多期增强扫描诊断胰腺癌的价值

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２６例，行三期扫描。分别为增强后平均延迟２８ｓ为动脉期，１０５ｓ为门脉期和３００ｓ为延迟平衡期。Ｂ组１６例，行二期扫描，分别延迟２８ｓ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

Evaluation of Multi-phase Helical CT for Diagnosis of Pancreatic Carcinoma

Purpose To evaluate the difference between dual\|phase and three\|phase enhancing helical CT for finding and diagnosis of pancreatic carcinoma. Methods 42 cases of pancreatic carcinoma were divided into A and B two groups.The A group includes 26 cases underwent three\|phase CT scan with helical acquisition during the mean 28 (A phase),105 (P phase) and 300 seconds (delay phase) after injection of intravenous contrast medium.B group includes the other 16 cases underwent dual\|phase CT scan during mean 28 (A phase) and 130 seconds (later P phase) after injection contrast medium.Mean CT attenuation values between normal pancreas and tumor and the number of metastasis of liver during the different phases were compared. Results Mean pancreas\|tumor contrast was significantly great during portal phase and the metastasis of liver were better shown during later portal phase. Conclusion Dual phase helical CT can be as routine examination for diagnosis of pancreatic carcinoma.