摘要
目的:探讨肝外胆管癌螺旋CT薄层动态增强扫描的表现及其诊断价值。方法:回顾性分析29例经手术病理证实的肝外胆管癌螺旋CT表现。CT平扫层厚和间隔为7mm。增强采用薄层动态扫描,分别于注射对比剂后25,60s行动脉期、门静脉期扫描,10～15min行延迟期扫描。层厚和间隔为5mm或3mm。结果:29例均显示梗阻处上方胆管不同程度扩张,梗阻处管壁不规则增厚、管腔非对称性狭窄或腔内软组织结节形成;与平扫相比,薄层动态增强扫描使上述征象显示更加明确,尤其是病变强化具有特征,即动脉期强化不明显,门静脉期轻度强化,延迟期强化程度明显增加,因而有助于肝外胆管癌的诊断。结论:螺旋CT薄层动态增强扫描对肝外胆管癌的诊断具有重要价值。
Objective： To evaluate imaging appearance of spiral CT thin-slice dynamic enhancement in the diagnosis of extrahepatic cholangiocareinoma. Methods： CT findings of 29 cases with pathological-proved cxtrahepatic cholangiocarcinoma were retrospectively analyzed. For plain CT scan, 7 mm thickness and interval were used. For thin-slice dynamic enhancement, scanning time of 25 s was used in arterial phase and 60 s in portal phase, 10-15 min in delayed phase. 5 mm or 3 mm thickness and interval were used. Results： Bile ducts proximal to the tumor were severely dilated in all cases, the involved bile ducts showed an irregular concentric thickening of the duct wall, and the lumen of involved bile ducts showed asymmetric narrowing and deformation and mass-forming. Compared with plain CT scan, these abnormal signs were showed conspicuously on thin-slice enhanced scan. In particular, enhancement of the lesions had characteristic changes, namely, no enhancement in arterial phase, slightly enhanced in portal phase and enhanced obviously in delayed phase, and these signs had the evaluation of diagnosis for extrahepatic cholangiocarcinoma. Conclusion： On spiral CT thin-slice dynamic enhancement scan, the diagnosis of extrahepatic eholangiocarcinoma can be made definitely.
出处
《天津医药》
CAS
北大核心
2005年第12期756-758,共3页
Tianjin Medical Journal
关键词
胆管
肝外
胆管肿瘤
体层摄影术
螺旋计算机
诊断
bile ducts,extrahepatic bile duct neoplasms tomography,spiral computed diagnosis
