溴氧化镧:铽增感屏

Lanthanum oxybromide: terbium intensifying screen

本文扼要阐述了与医用X线皎片匹配使用的荧光增感屏的结构和主要性能,如:增感效率、分辨率、光谱特性、余辉等,阐明了稀土元素增感屏较之传统的钨酸钙增感屏的种种优越性,重点介绍了目前应用最多的稀土元素荧光粉——溴氧化镧:铽的制备方法和特性,并列举了有关试验数据。

This paper outlines the structure and main properties, e. g. intensifying efficiency, resolving power, spectral characteristics, residual luminosity etc. , of fluorescent intensifying screens used in combination with medical radiographic film, and points out the numerous su-periosity of rare earth elements intensifing soreens to traditional intensifying screen using calcium tungstate. The article introduces mainly the preparation method and characteristics of the mostly used rare earth element fluorescent powder at present time-lanthanum oxybro-mide: terbium together with relevant tests datas.