肝局灶性结节增生的MRI表现  

MRI Manifestations of Focal Nodular Hyperplasia of the Liver

作　　者：杨军[1] 严福华[1] 周康荣[1] 施伟斌[1] 陈财忠[1] 沈继章[1] 

机构地区：[1]复旦大学附属中山医院放射科,上海200032

出　　处：《临床放射学杂志》2004年第8期695-698,共4页Journal of Clinical Radiology

摘　　要：目的　对肝局灶性结节增生 (FNH)的MRI表现进行分析和总结 ,以提高对FNHMRI表现的认识。资料与方法　经手术病理证实的FNH 18例 ,2 4个病灶 ,均作快速多层面扰相梯度回波 (FMPSPGR)动态增强 ,11例作SET1WI、PDWI及T2 WI,7例作SET1WI及FSET2 WI。结果　 2 4个病灶中 ,2个有典型中心瘢痕 ,9个有不典型中心瘢痕 ;动脉期明显强化 2 3个 ;门脉期 7个明显强化 ,15个中度强化 ,中心线样或点状强化 6个 ;平衡期 16个病灶中度强化 ,8个轻度强化 ,中心线样或点状强化 2个 ;延迟期 17个病灶 ,12个轻度强化 ,5个与肝实质等信号 ,4个有中心线样或点状强化。结论　MRI可对多数FNH(83.3% )作出正确诊断 ,对不典型FNH应结合病史及SPIO或Gd EOBObjective To analyze MRI features of focal nodular hyperplasia (FNH) of the liver, and to make a further understanding of FNH. Materials and Methods Dynamic contrast-enhanced FMPSPGR was performed in 18 patients with pathologically proved FNH (total 24 lesions). SE T 1WI, PDWI and T 2WI were completed in 11 cases, and SE T 1WI and FSE T 2WI in 7 cases.Results Of 24 lesions, central scar, the typical sign of FNH, was found in 2, while atypical central scar was seen in 9. Marked enhancement during arterial phase was demonstrated in 23, and during portal phase in 7 lesions. Moderate enhancement was seen in 15 lesions. During balanced phase, 16 lesions showed moderate enhancement and 8 lesions had mild enhancement. During delayed phase, 12 of 17 lesions showed mild enhancement and the other 5 lesions showed iso-signal, central linear or spotted enhancement was seen in 4 lesions.Conclusion Correct diagnosis of FNH , up to 83.3%, can be made by MRI. For atypical FNH, SPIO or Gd-EOB-DTPA enhanced dynamic scanning should be used and clinical material should be taken into account.

关 键 词：磁共振成像 肝脏 局灶性结节增生 磁显葡胺 

分 类 号：R445.2[医药卫生—影像医学与核医学]