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自从1895年伦琴发现X射线以来,首先应用于医学领域的是拍摄透视骨像,然后逐步从外科领域过渡到内科领域,使X线的应用范围扩展到那些对比度较差(y—射线吸收差较小)的组织系统,其发展大体可分为以下几个阶段:(1)气体X光管和感应圈时代(1895—
Since Roentgen discovered X-ray in 1895, it was first applied to the medical field to take a perspective bone image, and then gradually transitioned from the surgical field to the internal medicine field, extending the application range of the X-ray to those with poor contrast (y-ray absorption difference The development of a small organizational system can be roughly divided into the following phases: (1) Gas X-ray tube and induction coil era (1895—