公开(公告)号：EP2416176A1

公开(公告)日：2012-02-08

申请号：EP10758456.7

申请日：2010-03-19

申请人： Tokuyama Corporation ,  Tohoku University ,  Kyoto University ,  The University of Tokyo

发明人： FUKUDA, Kentaro ,  ISHIZU, Sumito ,  KAWAGUCHI, Noriaki ,  SUYAMA, Toshihisa ,  YOSHIKAWA, Akira ,  YANAGIDA, Takayuki ,  YOKOTA, Yui ,  KUBO, Hidetoshi ,  TANIMORI, Toru ,  SEKIYA, Hiroyuki

IPC分类号： G01T1/18 ,  G01T1/20 ,  H01J31/50

CPC分类号： G01T1/28 ,  H01J31/49 ,  H01J47/02

摘要： [Problems to be Solved] It is an object of the present invention to provide a novel radiographic image detector which can detect radiation, such as hard X-rays or γ-rays, with high sensitivity and which is excellent in position resolution and count rate characteristic.
[Means to Solve the Problems] A radiographic image detector comprises a combination of a scintillator, such as a lanthanum fluoride crystal containing neodymium, for converting incident radiation into ultraviolet rays; and a gas multiplication ultraviolet image detector for converting ultraviolet rays into electrons, amplifying such electrons by use of a gas electron avalanche phenomenon, and detecting the electrons. The radiographic image detector is characterized in that the gas multiplication ultraviolet image detector is basically constituted by a photoelectric conversion substance, such as cesium iodide or cesium telluride, for converting ultraviolet rays into electrons; a gas electron multiplier for amplifying electrons by use of the gas electron avalanche phenomenon; and a pixel electrode having an amplification function and a detection function.

摘要翻译： [待解决的问题]本发明的目的是提供一种能够以高灵敏度检测诸如硬X射线或³射线等辐射的新型放射线图像检测器，其位置分辨率和计数率优异 特性。 解决问题的手段放射线图像检测器包括闪烁体，例如含有钕的氟化镧晶体，用于将入射辐射转换为紫外线的组合; 以及用于将紫外线转换成电子的气体倍增紫外线图像检测器，利用气体电子雪崩现象来放大这些电子，并检测电子。 射线照相图像检测器的特征在于，气相色谱紫外图像检测器基本上由诸如碘化铯或碲化铯的光电转换物质构成，用于将紫外线转换成电子; 用于通过使用气体电子雪崩现象来放大电子的气体电子倍增器; 以及具有放大功能和检测功能的像素电极。