目的 探讨64排螺旋CT在诊断早 期肺癌的技术及流程优化。方法 对58例 肺部小于2cm结节进行低剂量螺旋CT全肺 扫描、局部感兴趣区域靶扫描以及对病 灶进行三维重建及分析。结果 通过手术 病理证实或临床随访，发现低剂量螺旋CT 全肺扫描+局部感兴趣区域靶扫描+病灶三 维重建能有效呈现肺内结节的各种影像细 节，通过对其影像分析能有效提高肺内早 期肺癌的诊断率。结论 低剂量螺旋CT全 肺扫描+局部感兴趣区域靶扫描+病灶三维 重建可以作为基层单位筛查早期肺癌的有 效方法，能提高早期肺癌的诊断率。

Objective To explore the technique and process optimization of 64-slice spiral CT in the diagnosis of early lung cancer. Methods Using low-dose spiral CT whole lung scan, local area-of-interest target scan and three-dimensional reconstruction analysis of 58 cases of lung less than 2cm nodules. Results It was found that low-dose CT spiral fulllung scan + local area-of-interest target scan and three-dimensional reconstruction of the lesion could effectively show the details of the pulmonary nodules, through the image analysis can effectively improve the early lung cancer diagnosis rate. Conclusion Lowdose CT spiral full-lung scan + local area-of-interest target scan and three-dimensional reconstruction of the lesion can be used as an effective method for screening early lung cancer in primary units, which can improve the diagnosis rate of early lung cancer.