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肝脏局灶性结节增生的CT与MRI诊断

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摘要 目的探讨肝脏局灶性结节增生(FNH)的CT及MRI影像特征及诊断价值。方法回顾性分析经病理证实的24例FNH的CT和MRI影像表现并进行总结。结果 24例均为单发,病灶直径2.2~6.9cm,平均4.8cm。CT检查15例,平扫均为低密度,12例病灶中心见星芒状更低密度中央瘢痕。增强扫描动脉期病灶均明显强化,中央瘢痕无强化。8例病灶中央或周边可见迂曲增粗血管。静脉期病灶密度迅速减低,但仍维持较高密度。平衡期为等密度或略低密度。4例中央瘢痕延迟扫描呈延迟强化。MRI检查9例,平扫T1WI呈稍低信号,T2WI呈稍高信号,4例可见中央瘢痕,呈条状长T1长T2信号。MRI病灶动态强化方式与CT相似。1例中央瘢痕呈延迟强化。结论 CT和MRI平扫及动态增强检查能显示FNH的典型征象,可提高诊断准确度。
作者 孙宇
出处 《中国医药指南》 2011年第4期110-111,共2页 Guide of China Medicine
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