肝脏由肝动脉及门静脉双重供血,行增强扫描时,肝脏的强化经历几个时相的变化,一般分为动脉期、门脉期及平衡期。以往非螺旋CT增强扫描图像大多落在平衡期,而螺旋CT结合压力注射器可获得动脉期和门脉期的图像。文献认为平衡期病灶多数为等密度或低密度,不利于病灶的鉴别和检出。因此我们设计出可获得平扫、动脉期、静脉期的常规肝脏扫描方法,现总结如下。 Liver by the hepatic artery and portal vein double blood supply, line enhanced scan, the liver enhancement experienced several changes in the phase, generally divided into arterial phase, portal phase and balance period. Previous non-spiral CT enhanced scan images mostly fall in the balance period, and spiral CT combined with pressure syringe can obtain the arterial phase and portal phase images. The literature that the balance of lesions for the majority of equal density or low density, is not conducive to the identification and detection of lesions. Therefore, we designed to obtain plain scan, arterial phase, venous phase of the conventional liver scanning method, are summarized as follows.