基层医院里普通ＣＴ机占大多数 ,增强扫描时不能对全肝及肿瘤做出三期 (即 :团注期、非平衡期、平衡期 )扫描 ,因此就达不到理想的增强效果 ,也就大大地降低了ＣＴ对肝脏肿瘤的诊断价值。作者依据工作实践 ,就如何提高普通ＣＴ机对肝肿瘤的诊断价值浅谈一些方法。1　经Ｂ超筛选 The average CT scanner in the primary hospitals accounts for most of the cases. During the enhanced scan, the whole liver and the tumor can not be scanned for three periods (ie bolus injection, non-equilibrium phase and balance phase), thus failing to achieve the desired enhancement effect It greatly reduces the diagnostic value of CT on liver tumors. The author based on work practice, on how to improve the diagnostic value of CT on liver tumors on some methods. 1 B-screening