Abstract
目的 与DSA对照,评估高分辨对比增强三维MR血管成像(high-resolution 3D MRA)显示肝动脉解剖的价值.方法 回顾性分析26例肝肿瘤(24例为原发性肝癌,2例为转移性肝癌)患者腹部高分辨对比增强3D MRA和DSA检查的资料.对高分辨对比增强3D MRA和DSA的各段肝动脉显影质量行4级评分(1级记为1分,2级为2分,3级为3分,4级为4分),并对两者显影质量行weighted Kappa分析;分析评估肝动脉解剖或变异,以及病理情况,与DSA进行比较.结果 26例患者高分辨对比增强3D MRA和DSA对肝总动脉(显影评分平均为3.96、3.96)、胃十二指肠动脉(评分为3.85、3.88)的显示有很好的一致性(Kappa值分别为0.99、0.85),对肝右动脉(评分为3.92、3.96)、肝左动脉(评分为3.77、3.92)、胃左动脉(评分为3.73、3.85)、肝右前(评分为3.35、3.70)和右后动脉(评分为3.31、3.73)及第Ⅳ段动脉(评分为2.92、3.46)有较好的一致性(Kappa值分别为0.65、0.43、0.43、0.53、0.46、0.51),而对肝第Ⅱ(评分为2.15、3.35)、Ⅲ段动脉(评分为2.19、3.35)一致性差(Kappa值分别为0.18、0.21).以DSA为标准,高分辨对比增强3D MRA准确显示18例正常解剖和7例变异[显示的准确度为96.1%(25/26)],1例胃十二指肠动脉闭塞.结论 高分辨对比增强3D MRA是一项能准确评估肝动脉的检查技术,可以达到肝段动脉的显示水平。
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