Abstract

目的 通过与直接门静脉造影术的比较,评价三维对比剂增强MR门静脉成像(3D CE MRP)的准确性.方法 26例患者行3D CE MRP和直接门静脉造影检查.分析3D CE MRP上门静脉主干、肝内左右分支的开放性和侧支循环发生情况,其结果与直接门静脉造影对照,评价两者符合情况,并分析两者不符的原因.结果 3D CE MRP和直接门静脉造影显示门静脉主干的结果完全一致.对肝内门静脉分支,有21例2种检查结果符合,但有5例不符.1例肝右叶巨大肿瘤,3D CE MRP显示门静脉右后支闭塞,但直接门静脉造影显示明显狭窄.3例左叶肝癌患者,3D CE MRP显示门静脉左支闭塞,但直接门静脉造影显示其近段狭窄和远端闭塞.另有1例肝癌患者,3D CE MRP显示门静脉左支矢状段小癌栓,而直接门静脉造影却未能显示.除1例脐静脉重开由于扫描范围较小未显示之外,3D CE MRP显示侧支循环的结果和直接门静脉造影相符.结论多数病例,3D CE MRP的显示结果与直接门静脉造影符合.3D CE MRP在鉴别肝内门静脉分支狭窄或闭塞时有一定限度,而在显示门静脉小栓子方面却有优势。

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