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X射线增感屏是将X射线转变为可见光而使胶片增强感光作用的重要材料。自1896年以钨酸钙作为增感屏使用以来已经历了80余年,却没有再找到另一种比它更好的材料来代替。70年代初国外陆续报道稀土增感屏基本性能的资料。1972年开始试用于临床已初步获得提高X线胶片感光的效果,因而引起人们的注意。据美国统计全国人工放射线照射中,90%是来源于医用放射线,日本情况亦类似。他们报道因长期应用X线普查癌症而引起癌症发病率增高的事实。因此减少X射线辐射已成为社会上急需解决的课题。自从高速增感屏的科研取得一定成果以来,在国际上很快
X-ray sensitization screen is the X-ray into visible light and the film to enhance the role of photosensitive material. More than 80 years have passed since 1896 when using calcium tungstate as a sensitizing screen, but no more material than this has been found to replace it. In the early 1970s, one after another reported the basic performance of rare earth sensitized screen. The trial started in 1972, has been initially obtained to improve the effect of X-ray film sensitivity, which attracted people’s attention. According to the statistics of the United States, 90% of the national artificial radiation exposure is from medical radiation, and the situation in Japan is similar. They report the fact that the incidence of cancer is elevated due to long-term use of radiographic cancer. Therefore, reducing X-ray radiation has become a pressing issue for the community. Since the high-speed screen sensory research has made some achievements in the international fast