Background : there has been resurgence of interest in lung cancer screening using low - dose computed tomography . the implications of directing a screening programme at smokers has been little explored 背景：用计算机体层摄影术对肺癌的筛选有着复活再现的兴趣。这意味着对于吸烟者进行直接筛选的规划要付出一点冒险。
