首页>
外国专利>
Method for representing the spatial distribution of radioactive elements by means of a screen of the erasable phosphor type, and corresponding device
Method for representing the spatial distribution of radioactive elements by means of a screen of the erasable phosphor type, and corresponding device
展开▼
机译:通过可擦除荧光粉类型的屏幕表示放射性元素空间分布的方法和相应的装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for representing the spatial distribution of radioactive elements of radioactively labeled samples, by means of a screen of the erasable phosphor type, in which the labeled samples are placed near this screen in order to generate thereon a latent electronic image formed by the &bgr; radiation or primary electrons generated by the radioactive elements. The primary electrons emitted by the radioelements are accelerated to an energy level lying between 20 keV and 1 MeV by means of an electric field E applied between the space separating the sample and the screen. The primary electrons subjected to acceleration in the space are confined, so as to limit the lateral excursion of these primary electrons. The latent image is formed, on this screen, from the confined and accelerated primary electrons. The primary electrons can generate low energy secondary electrons in CSI screens which are thus accelerated and focussed to give enlarged images onto a screen.
展开▼