公开(公告)号：US5989799A

公开(公告)日：1999-11-23

申请号：US99325

申请日：1998-06-18

申请人： Ann Verbeeck ,  Peter Verrept ,  Paul Callant ,  Koenraad Caron

发明人： Ann Verbeeck ,  Peter Verrept ,  Paul Callant ,  Koenraad Caron

IPC分类号： G21K4/00 ,  G03C1/005 ,  G03C1/035 ,  G03C1/10 ,  G03C1/12 ,  G03C5/17

CPC分类号： G03C1/0053 ,  G03C1/122 ,  G03C5/17 ,  G03C2200/03 ,  Y10S430/167

摘要： A radiographic screen/film combination or system has been provided comprising a duplitized film sandwiched between a pair of supporting or self-supporting X-ray intensifying screens, characterized in that i) said pair of supported or self-supporting X-ray intensifying screens essentially consists of luminescent phosphor particles emitting at least 50% and more preferably at least 80% of their emitted radiation in the wavelength range shorter than 380 nm, as e.g. a niobium and gadolinium doped, monoclinic M, yttriumtantalate (MYT) phosphor corresponding to formula IYTaO.sub.4 :Gd:Nb (I),ii) said film comprises {111} tabular silver halide grains rich in silver chloride, spectrally sensitive to irradiation in the said wavelength range shorter than 380 nm by the presence of at least one azacyanine dye as a spectral sensitizer.

摘要翻译： 已经提供了包括夹在一对支撑或自支撑X射线增强屏之间的双面胶片的射线照相屏/膜组合或系统，其特征在于i）所述一对支撑或自支撑X射线增强屏本质上 由发射荧光体颗粒的发射波长范围小于380nm的发射辐射的至少50％，更优选至少80％，例如 对应于式IYTaO4：Gd：Nb（I）的铌和钆掺杂的单斜晶M，钇钽酸盐（MYT）荧光体，ii）所述薄膜包含富含氯化银的{111}片状卤化银颗粒，对所述 通过存在至少一种氮杂菁染料作为光谱增感剂，波长范围短于380nm。