螺旋CT双期增强扫描在早期胰腺癌诊断中的价值  

Dual phase helical CT:diagnosis value for early pancreatic carcinoma

作　　者：沈冰奇[1] 张翎[1] 郑可国[1] 许达生[1] 

机构地区：[1]中山大学附属第一医院放射科,广州510080

出　　处：《影像诊断与介入放射学》2006年第6期265-267,共3页Diagnostic Imaging & Interventional Radiology

基　　金：广州市科技计划项目基金(1999-2-101-07);广东省科技计划项目基金(20051330501001)

摘　　要：目的研究螺旋CT胰腺期、门脉期双期增强扫描在早期胰腺癌诊断中的价值。方法对21例早期胰腺癌患者行螺旋CT胰腺期及门脉期双期增强扫描,扫描时间分别为注射对比剂后35s和65s,对比剂用量1.5ml/kg,注射速度3ml/s。观察早期胰腺癌在两期的增强情况,对胰腺期、门脉期胰腺CT增强值以及肿瘤-胰腺增强差值采用均数±标准差(x±s)表示。结果肿瘤-胰腺对比胰腺期和门脉期分别为(45.16±18.23)HU和(23.15±12.44)HU(t=2.13,P<0.01)。结论对胰腺进行螺旋CT双期增强扫描,可分为胰腺期和门脉期,其中胰腺期能更加清晰地显示早期胰腺癌,有利于早期胰腺癌的诊断。Objective To study dual-phase helical CT for the evaluation of early pancreatic cacinoma. Methods Dual-phase helical CT was performed on 21 patients with early pancreatic carcinoma. In the enhanced imaging the contrast material was intravenously injected in a dose of 1.5ml/kg at a rate of 3 ml/s. The image acquisition of the lesion in pancreatic phase （PP） and portal venous phase （PVP） were started at 35 seconds and 65 seconds after the start of the injection respectively. The enhancement of normal pancreas and tumor during the two phases was observed and compared. All data were statistically analyzed. Results Tumor-pancreas contrast was significanfly greater in PP （45.16±18.23） HU than in PVP （23.15±12.44） HU （t = 2.13, P 〈 0.01）. Conclusion Dual-phase helical CT scan for pancreas, including the imaging of the pancreatic and portal venous phase, can be applied as an optimal selection. It can delineate early pancreatic carcinoma clearly and provide more information for the diagnosis of the lesion. The tumor-pancreas contrast was much higher in PP than in PVP.

关 键 词：胰腺肿瘤 体层摄影术 X线计算机 双期增强 

分 类 号：R735.9[医药卫生—肿瘤]