滤线器为减少续发射线提高照片质量最有效的工具。 一般分弧形、平板形和方格形,同时又分为活动滤线器和固定滤线器两种,从其构造上看,前者仅连于一个移动的机械装置即为活动滤线器。就我们医院的几处向焦点平板形滤线器,以及实际工作中遇到的问题, The filter is the most effective tool for reducing the amount of shots that can be added to improve picture quality. Generally sub-arc, flat and square grid shape, at the same time is divided into two active filter and fixed filter, from the point of view of its structure, the former is only connected to a moving mechanical device is the active filter. Several hospitals in our hospital to focus flat-shaped filter, as well as practical problems encountered in the work,