【摘要】 目的 分析原发性肝癌动态CT增强扫描时肝实质一过性强化(THAE)征象，探讨其产生的病理基础。 方法 回顾性分析经临床或病理证实的196例原发性肝癌的动态增强CT表现。全部病例先做上腹部常规螺旋CT平扫;注射造影剂后20～25s行动脉期扫描，60～65s行门静脉期扫描，部分病例行5～10min延迟扫描。 结果 21例(10.7%)共发现28处肝动脉期THAE，其中25处(89.3%)平扫时未显示密度异常，3处(10.7%)呈稍低密度灶。所有21例THAE在动脉期均呈均匀高密度影，门脉期均呈等密度或稍高密度影，其形状多为楔形或扇形。 结论 肝实质一过性灌注异常在原发性肝癌的诊断中有重要价值，它反映了肝脏血流动力学的改变。

    关键词 肝肿瘤 灌注 体层摄影 X线计算机

    The value of hepatic perfusion disorders during dynamic contrast-enhanced spiral CT scanning in the diagnosis of hepatocellular carcinoma

    Wang Junming，Yao Xiaoxin，Zhang Xiaoni，et al.

    Department of CT，The Fourth Hospital of Xi′an，Xi′an710004.

    【Abstract】 Objective To study the features of transient hepatic abnormal enhancement(THAE)in the hep-atocellular carcinoma，and to discuss its pathologic basis.Methods 196cases of HCC proved by clinical-or patholo-gy were reviewed retrospectively.Unenhanced spiral CT image were routinely obtained before injection of contrast mate-rial ......