螺旋CT双期增强扫描在小胰腺癌诊断中的应用  

Value of the Technique of Dual-plase Contrast Enhencement by Helical CT in the Diagnosis of Small Pancreatic Carcinoma

作　　者：苏祁[1] 许相丰[2] 

机构地区：[1]湖南中医学院第一附属医院放射科,长沙410007 [2]天津市南开医院放射科

出　　处：《中国中西医结合外科杂志》2005年第6期475-477,共3页Chinese Journal of Surgery of Integrated Traditional and Western Medicine

摘　　要：目的:探讨螺旋CT双期增强扫描技术及其在小胰腺癌诊断中的价值。方法:对14例小胰腺癌患者进行双期螺旋扫描,扫描延迟时间分别为30s和70s,对比剂用量100mL,注射速度2.5mL/s,观察比较正常胰腺和肿瘤在两期增强情况,根据CT表现对肿瘤可切除性进行术前评估,并与手术结果比较。结果:胰腺期和门脉期正常胰腺和肿瘤组织的CT值差分别为(44±8.0)HU和(20±12)HU,P<0.01。14例小胰腺癌术前认为可切除11例,与手术结果相符。结论:胰腺期胰腺与肿瘤密度对比较门脉期更显著,螺旋CT双期增强扫描有利于小胰腺癌检出和正确术前评估。Objective To evaluate the use of dual-phase helical CT in early detection of small pancreatic carcinoma Methods Dual-phase helical CT was performed on 14 patients with small pancreatic carcinoma with 100 ml intravenous contrast material injected at a rate of 2.5 ml/s. Pancreatic phase（PP） and portal venous phase（PVP） began at 30 seconds and 70 seconds after the atart of the injection. The enhancement of normal pancreas and tumor during the two phases was observed and compared. The assessment of tumor respectability based on CT findings was compared with surgical results. Results Pancreas-tumor contrast was significantly greater in PP （44 ± 8.0） HU than in PVP（20 ± 12 HU）, P 〈 0.01. Before operation in 11 of 14 were thought of respectable, in according with surgical results. Conclusion Dual-phase helical CT could delineate small pancreatic carcinoma clearly and afford moral information for the diagnosis and assessment of respectability of the lesion, the pancreas-tumor contrast was much better in PP than in PVP.

关 键 词：胰腺肿瘤 体层摄影术 X线计算机 评价研究 

分 类 号：R816.5[医药卫生—放射医学]