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LAVA动态增强磁共振成像在肝外胆管癌诊断中的应用

Modern Medical Journal(2014)

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Abstract
目的:探讨LAVA动态增强磁共振成像(MRI)对肝外胆管癌诊断的准确性和临床意义.方法:回顾性分析28例临床怀疑肝外胆管癌患者的LAVA动态增强MRI资料.所有病例均行1.5T磁共振T1加权成像(T1WI)、T2加权成像(T2WI)、扩散加权成像(DWI)及阵列空间敏感编码技术(ASSET)、LAVA动态增强磁共振成像(LAVA-DCE MRI).结果:28例患者均经病理证实,肝门区胆管13例,胆总管上段3例,中段5例,胆总管下段4例,壶腹部3例.平扫:病灶T1WI呈低信号、稍低信号或等信号,T2WI呈高信号、稍高信号和等信号,DWI呈稍高信号或高信号.LAVA动态增强:动脉期肿块轻度强化5例,门脉期肿块轻-中度强化16例,延迟期肿块延迟强化7例.本组病例中分别有3例肝门区胆管癌误诊为肝细胞型肝癌,2例胆总管下段癌误诊为胆管炎,诊断准确率为82.1%.结论:LAVA动态增强MRI对肝外胆管癌的诊断具有重要价值.
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Key words
magnetic resonance imaging,dynamic contrast,magnetic resonance,lava
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