肝脏灌注异常的MRI表现  

MRI feature of hepatic perfusion disorders

作　　者：曹庆勇[1] 邹志孟[1] 王琪[1] 贺春妮[1] 邹静[1] 王滨[1,2] 

机构地区：[1]滨州医学院烟台附属医院影像中心,山东烟台264100 [2]滨州医学院,山东烟台264003

出　　处：《中国中西医结合影像学杂志》2013年第6期605-607,623,共4页Chinese Imaging Journal of Integrated Traditional and Western Medicine

基　　金：国家自然科学基金项目(81171303;30470518);山东省卫生厅科技发展项目(2011WSB29009;2011HW067);山东省卫生系统杰出学科带头人基金(2006-39);滨州医学院科技计划(BY2012KJ38)

摘　　要：目的:分析肝灌注异常的MRI表现,探讨其可能的发生机制。方法:35例肝异常灌注患者,分析形成原因、是否伴有动脉-门静脉瘘(arterioportal shunt,APS),并根据病变影像表现进行分型。结果:35例异常灌注中26例与肿瘤有关(74.3%),肝脏恶性肿瘤是引起肝脏异常灌注重要原因。35例肝异常灌注T1WI、T2WI未见明显异常信号,DWI为等信号;增强扫描动脉期为高信号,门脉期及延迟期为等或高信号。MRI表现可分为弥漫型;肝叶、肝段型;楔形和片状。结论:肝灌注异常是反映潜在肝脏病变的一个重要征象;MRI能够明确肝灌注异常的原因。Objective： To analyze the MRI findings of the hepatic perfusion disorders in liver diseases and its pathogenetic mech anisms. Methods：To analyse the causes of the 35 patients with hepatic perfusi9n disorders, check if they are in concomitance with APS,and classify according to their imaging findings. Results： 26 of 35 （74.3 % ）patients with hepatic perfusion disorders were relevant to hepatocellular carcinoma. It was the major cause of hepatic perfusion disorders. The hepatic perfusion disorders phenomenon in 35 patients were not found obvious abnormal lesions on TeWI and T, WI,isointcnsity on DWI; the patients underwent enhanced MRI showed enhancement during hepatic arterial phase,iso or hyperintensity during portal venous phase and delay phase. According to their MRI findings, hepatic perfusion disorders can be divided into several types： diffuse type, lobe type or segment type,wedge type and platy. Conclusion：The hepatic perfusion disorders phenomenon may herald an underlying abnormality of liver disease. MRI can accurately diagnose hepatic perfusion disorders in liver diseases.

关 键 词：肝脏 血流动力学 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R575[医药卫生—诊断学]