1895年,德国物理学家伦琴偶然之间发现了一种透射力极强的射线,这就是X射线。自此,X射线被广泛地用于医学上的人体透视、拍片、检测骨骼和胸肺部病变等领域。随着对X射线的不断认识,人们发现,很多癌症的发病与X射线有关。美国一位国际知名的放射线专家约翰·高夫曼称,医疗辐射? In 1895, the German physicist Roentgen accidentally discovered a very strong beam of radiation, which is X-ray. Since then, X-rays have been widely used in medical human perspectives, filming, bone detection, and chest and lung lesions. With the constant understanding of X-rays, it has been found that the incidence of many cancers is related to X-rays. According to John Goffman, an internationally recognized radiologist, medical radiation?