【摘要】 目的　对 5 4例肝细胞性肝癌的螺旋CT双期扫描表现进行分析 ,探讨其在肝癌诊断及鉴别诊断中的价值。方法　对全部病例行全肝平扫和增强扫描。注射造影剂后 2 5s开始肝动脉期扫描 ,70s开始门脉期扫描。观察全部病灶在双期增强扫描中的表现。结果　肝动脉期扫描共发现病灶 72个 ,其中 2 8个病灶表现为均匀强化 ,40个为不均匀强化 (其中 4个还可见到供血动脉 ) ,另有 4个无明显强化。门脉期扫描中发现 6 2个病灶 ,均为低密度 ,其中 8例可见到门脉癌栓形成 ,另有 7个病灶可见到假包膜形成。结论　螺旋CT双期增强扫描可充分反映肝细胞性肝癌的特征 ,有利于诊断和鉴别诊断。更多还原

【Abstract】 Objective To analyze the features of two phase spiral scanning in 54 cases of hepatocellular carcinoma and to evaluate its usefulness in diagnosis and differential diagnosis.Methods Precontrast and postcontrast CT scans of the whole liver in all cases were carried out with GE Hispeed Advantage spiral CT scanner. The arterial phase scanning was strarted at 25 sec after injection of contrast medium and the portal venous phase scanning at 70 sec.Results In the 54 cases examined, 72 lesions were found in the arterial phase. In 28 of these lesions, it was enhanced homogeneously, while in 40 lesions, the enhancement was not homogeneous. Supplying artery could be seen in 4 of them. The remaining 4 lesions had no enhancement. There were 62 lesiosns with low density in portal venous phase. Portal vein tumor thrombus was seen in 8 cases, and pseudocapsule was observed in 7 lesions.Conclusion Tow phase spiral CT scanning is of value in the diagnosis and differential diagnosis of hepatocellular carcinoma. Subject更多还原