发明公开
- 专利标题： RADIOGRAPHIC IMAGE DETECTOR
- 专利标题（中）： RÖNTGENBILDDETEKTOR
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申请号： EP10758456.7申请日： 2010-03-19
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公开(公告)号： EP2416176A1公开(公告)日： 2012-02-08
- 发明人: FUKUDA, Kentaro , ISHIZU, Sumito , KAWAGUCHI, Noriaki , SUYAMA, Toshihisa , YOSHIKAWA, Akira , YANAGIDA, Takayuki , YOKOTA, Yui , KUBO, Hidetoshi , TANIMORI, Toru , SEKIYA, Hiroyuki
- 申请人： Tokuyama Corporation , Tohoku University , Kyoto University , The University of Tokyo
- 申请人地址： 1-1 Mikage-cho Shunan-shi, Yamaguchi-ken 745-8648 JP
- 专利权人： Tokuyama Corporation,Tohoku University,Kyoto University,The University of Tokyo
- 当前专利权人： Tokuyama Corporation,Tohoku University,Kyoto University,The University of Tokyo
- 当前专利权人地址： 1-1 Mikage-cho Shunan-shi, Yamaguchi-ken 745-8648 JP
- 代理机构： Jackson, Martin Peter
- 优先权： JP2009089351 20090401; JP2009207779 20090909
- 国际公布： WO2010113682 20101007
- 主分类号： G01T1/18
- IPC分类号： G01T1/18 ; G01T1/20 ; H01J31/50
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.
[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.
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