螺旋CT双期增强扫描诊断胰腺癌65例分析

目的探讨螺旋CT胰腺期、门脉期双期增强扫描在胰腺癌诊断中的影像学特征。方法 65例胰腺癌患者均行螺旋CT双期增强扫描,扫描延迟时间分别定为30 s（胰腺期）和70 s（门脉期）,造影剂用量100 ml（非离子型）,高压注射器团注,速率2.5~3 ml/s。观察并比较肿瘤及正常胰腺在两期的增强情况,根据CT征象对肿瘤可切除性进行评价。结果 65例中肿瘤位于胰头颈部34例,钩突部18例,体尾部13例。发现小胰腺癌3例,直径均小于2 cm。增强扫描肿瘤在胰腺期、门脉期的增强值比较,差异无统计学意义（P〉0.05）;正常胰腺组织在胰腺期增强值明显高于门脉期（P〈0.05）;肿瘤-胰腺对比在胰腺期与门脉期比较,差异有统计学意义（P〈0.05）。胰周大血管受侵占不可切除性肿瘤的62%,胰周小静脉迂曲扩张占40%,肝脏转移灶占38%。结论运用螺旋CT进行胰腺期和门脉期双期增强扫描,能更好地发现病灶,有助于胰腺癌的及时诊断。

Dual-phase helical CT in diagnosis of pancreatic carcinoma:Analysis of 65 cases

Objective To evaluate the value of Dual-phase helical CT in the diagnosis of pancreatic carcinoma.Methods Dual-phase helical CT was performed on 65 patients with pancreatic carcinoma.Pancreatic phase and portal venous phase began at 30 s and 70 s after the start of intravenous injection with 100 ml contrast material injected at the rate of 2.5~3 ml/s.The enhancement of normal pancreas and tumor during the two phases was observed and compared.The resectability of tumor was assessed based on CT finding.Result...