肝脏局灶性结节增生的螺旋CT和MRI对比研究  

A COMPARISON BETWEEN IMAGES OF SPIRAL CT AND MRI ON HEPATIC FOCAL NODULAR HYPERPLASIA

作　　者：李兰涛[1] 张密堂[1] 林红雨[1] 孙继泽[1] 

机构地区：[1]青岛大学医学院第二附属医院放射科,山东青岛266042

出　　处：《齐鲁医学杂志》2008年第5期423-425,共3页Medical Journal of Qilu

摘　　要：目的探讨肝脏局灶性结节增生(FNH)的CT和MRI表现及鉴别要点,提高影像诊断的准确率。方法回顾性分析13例经病理证实的肝脏FNH病人的CT和MRI表现。结果CT扫描检查10例,平扫9例病灶呈低密度,其中6例中央可见更低密度影,1例病灶呈稍高密度;增强扫描动脉期所有病灶均明显强化,呈均匀或不均匀密度;门脉期病灶呈稍高或等密度;6例病灶的中央瘢痕均延时强化。MRI检查11例,平扫病灶均呈T1WI稍低信号,T2WI稍高信号;增强扫描除中央瘢痕外,病灶动脉期明显强化,门脉期呈稍高或近等信号,延迟期呈近等信号,9例病灶的中央瘢痕延迟强化。结论CT和MRI对FNH的诊断具有特征性和准确性,二者结合能提高对FNH的诊断率。Objective To evaluate the CT and MRI in detecting hepatic focal nodular hyperplasia （FNH）. Methods Data of the CT and MRI of 13 patients with hepatic FNH confirmed pathologically were reviewed. Results Of 10 patients underwent CT, nine showed hypodensity on plain scanning, in which, much lower density was found in six cases, a slightly higher density was found in one. On enhancement scanning, the lesions showed intense enhancement on arterial phase, even or uneven. On portal vein phase, the lesions showed higher or isodense. Delayed enhancement in central scars was seen in six cases. MRI was done for 11 patients, on plain scanning, the lesions showed hypointense on T1 WI and hyperintense on T2WI~ on enhancement, the lesions showed intense enhancement on arterial phase, except for central scars. On portal vein phase, the lesions showed slight hy per-or isointense. On delayed phase, the lesions showed isointense. A central scar demonstrated delayed enhancement in nine ca Conclusion CT and MRI are specific and accurate in detecting hepatic FNH. A combination of the two methods can improve the diagnostic accuracy.

关 键 词：肝疾病 局限性结节状增生 体层摄影术 X线计算机 磁共振成像 

分 类 号：R735.745[医药卫生—肿瘤]