【摘要】 目的探讨动态增强CT扫描对肝脏局灶性结节增生(FNH)的诊断价值。方法对19例FNH行三期动态增强CT扫描的影像资料进行回顾性分析。结果 19例均为单发病灶,3个病灶直径小于30mm,16个病灶直径31～73mm。动脉期17个病灶呈明显均匀强化,2个病灶呈略不均匀强化,14个病灶周围或内部见增粗迂曲肝动脉。门脉期9个病灶呈等密度,7个病灶呈略高密度,3个病灶呈略低密度。平衡期10个病灶呈等密度,5个病灶呈略高密度,4个病灶呈略低密度。11个病灶内可见瘢痕状低密度区。结论 CT扫描肝内病灶动脉期呈明显均匀强化,病灶内或病灶周边可能显示增粗迂曲肝动脉;门脉期、平衡期病灶呈等、略低或略高密度;病灶内可能含有瘢痕状低密度区,以上征象的出现高度提示FNH的诊断。更多还原

【Abstract】 Objective To evaluate the value of dynamic enhanced CT in diagnosing focal nodular hyperplasia(FNH)of liver.Methods A retrospective analysis was done for data in 19 patients with FNH underwent triphase dynamic enhanced CT scans.Results All the 19 patients had a single lesion,of which,three were less than 30 mm in diameter,16 ranged 31-73 mm.In the arterial phase,17 lesions demonstrated homogeneous enrichment,two showed slightly uneven enrichment,and thickened and circuitous hepatic arteries could be seen inside or around 14 lesions;In portal venous phase,nine showed isodense,seven showed slightly-high density,and three with low density;In balanced phase,10 appeared as isodense,five as slightly-high density,and four as low density.A scar-form low density area could be seen inside of the 11 foci.Conclusion In CT scanning,the lesions of liver show well-distributed enrichment in arterial phase,thickened and circuitous hepatic arteries could be seen inside or around the lesions.In portal venous phase and balanced phase,the lesions show isodense,slightly-high density or low density,and scar-form low density area is likely to be found in the lesions as well.All the above signs are strongly suggestive of the diagnosis of FNH.更多还原