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31. 发明授权

US4982098A Speed compensated intensifying screen for radiography 失效
标题翻译：速度补偿强化屏
公开(公告)号：US4982098A
公开(公告)日：1991-01-01
申请号：US148958
申请日：1988-01-27
申请人： Kazuo Yokota , Akihisa Saito , Takeshi Sawada
发明人： Kazuo Yokota , Akihisa Saito , Takeshi Sawada
IPC分类号： G21K4/00 , H05G1/64
CPC分类号： G21K4/00 , H05G1/64
摘要： Disclosed is speed compensated intensifying screen which has a layer of phosphor and a protective layer superposed sequentially on a substrate and further has a light-absorbing layer capable of absorbing part of the light emitted from the layer of phosphor superposed thereon. By this light-absorbing layer, a plurality of regions differing in speed are formed within the layer of phosphor. In the plurality of regions, the speed is continuously changed across the borderlines between the regions. This continuous change in density across the borderlines prevents the borderlines between the regions of speed from appearing as line patterns in the produced X-ray radiograph. The intensifying screen of the grade adapted for X-ray radiography of the chest effects proper speed correction by incorporating therein a plurality of regions of speed formed so as to conform to the various internal organs in the chest such as the upper and lower mediastinums, the hilums of the lung, and the lungfields. The intensifying screen of the grade adapted for X-ray radiography of the head effects proper speed correction by incorporating therein a plurality of regions of speed formed so as to conform to the various parts of the head from the central part through the portion near the scalp. The intensifying screen of the grade adapted for X-ray radiography of the upper and lower jaws and the peripheries thereof effects proper speed correction such as to prevent the shadow of the backbone from giving rise to portion deficient in radiographic density.

32. 发明授权

US08937286B2 Solid scintillator and electron beam detector using the same 有权
标题翻译：固体闪烁体和电子束检测器使用
公开(公告)号：US08937286B2
公开(公告)日：2015-01-20
申请号：US14350196
申请日：2012-10-26
申请人： Kazumitsu Morimoto , Yoshitaka Adachi , Akihisa Saito , Eiji Oyaizu , Masaki Toyoshima
发明人： Kazumitsu Morimoto , Yoshitaka Adachi , Akihisa Saito , Eiji Oyaizu , Masaki Toyoshima
IPC分类号： C09K11/67 , C09K11/77 , C09K11/08 , H01J37/244
CPC分类号： C09K11/7774 , G21K4/00 , H01J37/244 , H01J2237/2443 , H01J2237/28 , Y10T428/24355
摘要： The present invention provides a solid scintillator comprising a rare earth oxide sintered body, wherein: an afterglow time, which is the time required for a light output from the solid scintillator to degrease from a maximum value to 1/e of the maximum value, is 200 ns or shorter. The rare earth oxide sintered body preferably has a composition represented by a general formula (1): LnaXbOc:Ce (1), wherein Ln is one or more elements selected from Y, Gd and Lu; X is one or more elements selected from Si, Al and B; and a, b and c satisfy 1≦a≦5, 0.9≦b≦6, and 2.5≦≦c≦13, respectively.
摘要翻译：本发明提供一种包含稀土氧化物烧结体的固体闪烁体，其中，从固体闪烁体输出的光从最大值到最大值1 / e的所需时间的余辉时间为 200 ns或更短。稀土氧化物烧结体优选具有由通式（1）表示的组成：LnaXbOc：Ce（1），其中Ln是选自Y，Gd和Lu中的一种或多种元素; X是选自Si，Al和B中的一种或多种元素; a，b和c分别满足1＆nlE; a＆nlE; 5,0.9＆nlE; b＆nlE; 6和2.5＆nlE;＆nlE; c＆nlE; 13。

33. 发明申请

US20130083891A1 INTENSIFYING SCREEN FOR X-RAY DETECTOR, X-RAY DETECTOR, AND X-RAY INSPECTION APPARATUS 有权
标题翻译： X射线探测器，X射线探测器和X射线检测装置的强化屏幕
公开(公告)号：US20130083891A1
公开(公告)日：2013-04-04
申请号：US13477503
申请日：2012-05-22
申请人： Eiji OYAIZU , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
发明人： Eiji OYAIZU , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
IPC分类号： G01T1/202 , C09K11/85 , C09K11/84 , G01N23/04 , G01N23/203
CPC分类号： C09K11/7733 , C09K11/7771 , G21K4/00 , G21K2004/08
摘要： In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.
摘要翻译：在一个实施例中，X射线检测器具有透射荧光产生部分和反射荧光产生部分。透射和反射荧光产生部分具有至少一个具有荧光体层的增强屏幕，其中荧光体层含有镨激活的氧硫化钆荧光体颗粒，其中粒径在中心粒径的±30％中的颗粒的比例为45 体积比以上，填充率为60体积％以上，具有含有铕激活的氟化钡荧光体粒子的荧光体层的增强丝网，其中粒径在±30％以下的粒子的比率中心粒径为45体积％以上，填充率为45体积％以上。

34. 发明授权

US4857741A X-ray intensifying screen 失效
标题翻译： X光增强屏
公开(公告)号：US4857741A
公开(公告)日：1989-08-15
申请号：US31140
申请日：1987-03-30
申请人： Kazuto Yokota , Akihisa Saito
发明人： Kazuto Yokota , Akihisa Saito
IPC分类号： G03C1/775 , C09K11/00 , C09K11/08 , C09K11/67 , C09K11/68 , C09K11/77 , C09K11/78 , D21H19/00 , D21H27/00 , G21K4/00
CPC分类号： C09K11/7703 , C09K11/7702 , C09K11/7768 , C09K11/7769 , C09K11/7785 , G21K4/00
摘要： This invention concerns an intensifying screen using a phosphor capable of emitting light under X-ray excitation. This intensifying screen is characterized by the fact that the phosphor layer in the intensifying screen comprises a first phosphor layer containing a phosphor represented by the general formula (I):M.sub.a Ln.sub.1--x--(2/3)a DO.sub.4 :XR.sup.3+ (I)(wherein M stands for at least one divalent metal element selected from the group consisting of Be, Mg, Ca, Sr, Ba, Zn, and Cd, Ln for at least one element selected from the group consisting of Y, Gd, La, and Lu, D for either or both of Ta and Nb, R for at least one member selected from the group consisting of Tm, Pr, Sm, Eu, Tb, Dy, Yb, and self-activators, a for a value satisfying the expression, 0
摘要翻译：本发明涉及使用能够在X射线激发下发光的荧光体的增强屏幕。该增强屏的特征在于，增强屏中的荧光体层包括含有通式（I）表示的荧光体的第一荧光体层：MaLn1-x-（2/3）aDO4：XR3 +（I）（其中， M代表选自Be，Mg，Ca，Sr，Ba，Zn和Cd中的至少一种二价金属元素，对于选自Y，Gd，La和Lu中的至少一种元素，对于Ta和Nb中的任一个或两个，对于选自Tm，Pr，Sm，Eu，Tb，Dy，Yb和自激活剂中的至少一个，R为R，对于满足表达式的值，并且形成在上述基板侧上，并且形成在上述保护层侧上的含有CaWO 4的第二荧光体层，其中，满足0≤x≤0.005的阀为0

35. 发明授权

US08693627B2 Intensifying screen for X-ray detector, X-ray detector, and X-ray inspection apparatus 有权
标题翻译：强化X射线检测仪，X射线检测仪，X射线检测仪等
公开(公告)号：US08693627B2
公开(公告)日：2014-04-08
申请号：US13477503
申请日：2012-05-22
申请人： Eiji Oyaizu , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
发明人： Eiji Oyaizu , Akihisa Saito , Yoshitaka Adachi , Kazumitsu Morimoto
IPC分类号： G01T1/202 , C09K11/85 , C09K11/84 , G01N23/04 , G01N23/204
CPC分类号： C09K11/7733 , C09K11/7771 , G21K4/00 , G21K2004/08
摘要： In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.
摘要翻译：在一个实施例中，X射线检测器具有透射荧光产生部分和反射荧光产生部分。透射和反射荧光产生部分具有至少一个具有荧光体层的增强屏幕，其中荧光体层含有镨激活的氧硫化钆荧光体颗粒，其中粒径在中心粒径的±30％中的颗粒的比例为45 体积比以上，填充率为60体积％以上，具有含有铕激活的氟化钡荧光体粒子的荧光体层的增强丝网，其中粒径在±30％以下的粒子的比率中心粒径为45体积％以上，填充率为45体积％以上。

36. 发明授权

US06504156B1 Ceramic scintillator material and manufacturing method thereof, and radiation detector therewith and radiation inspection apparatus therewith 有权
标题翻译：陶瓷闪烁体材料及其制造方法及其辐射检测器及其辐射检查装置
公开(公告)号：US06504156B1
公开(公告)日：2003-01-07
申请号：US09615057
申请日：2000-07-12
申请人： Takeshi Takahara , Akihisa Saito , Yukihiro Fukuta , Eiji Oyaizu , Masaaki Tamatani
发明人： Takeshi Takahara , Akihisa Saito , Yukihiro Fukuta , Eiji Oyaizu , Masaaki Tamatani
IPC分类号： G01T120
CPC分类号： C09K11/7771 , C04B35/547 , C04B35/6455 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3244 , C04B2235/34 , C04B2235/5436 , C04B2235/656 , C04B2235/6567 , C04B2235/783 , C04B2235/786 , C04B2235/95 , C04B2235/96 , G01N23/046 , G01N2223/419
摘要： A ceramic scintillator material consists of a sintered body of a rare earth oxysulfide phosphor containing Pr as an activator. The sintered body has a texture where coarse grains of irregular polyhedron and slender fine grains are intermixed. The coarse grains have a shape of for instance a dimension (average value) in the range of 50 to 100 &mgr;m, the fine grains having a shape of which average short axis is in the range of 2 to 5 &mgr;m and average long axis in the range of 5 to 100 &mgr;m. An area ratio of the coarse grains to the fine grains is in the range of 10:90 to 60:40. Such a ceramic scintillator material has, in addition to excellent light output (high sensitivity), mechanical strength capable of coping with downsizing of a detector. Furthermore, non-uniformity in sensitivity that causes artifacts can be decreased.
摘要翻译：陶瓷闪烁体材料由含有Pr作为活化剂的稀土氧硫化物荧光体的烧结体构成。烧结体具有粗糙的不规则多面体和细长细颗粒混合的结构。粗粒的形状例如为50〜100μm的尺寸（平均值），细长粒的平均短轴为2〜5μm的平均长轴，平均长轴为范围在5到100 mum。粗晶粒与细晶粒的面积比在10:90〜60:40的范围内。除了优异的光输出（高灵敏度）之外，这种陶瓷闪烁体材料还具有能够应对检测器尺寸减小的机械强度。此外，可以降低导致伪像的灵敏度的不均匀性。

37. 发明授权

US06339224B1 Radiation intensifying screen and radiation receptor and radiation inspection apparatus using the intensifying screen 有权
标题翻译：辐射强化屏和放射线受体和放射检查仪使用强化屏
公开(公告)号：US06339224B1
公开(公告)日：2002-01-15
申请号：US09423282
申请日：1999-11-08
申请人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu
发明人： Takeshi Takahara , Akihisa Saito , Eiji Oyaizu
IPC分类号： G21K400
CPC分类号： G21K4/00 , G21K2004/06
摘要： An intensifying screen, comprising a support, a phosphor layer disposed on the support and a protecting film disposed on the phosphor layer. The phosphor layer comprises a first phosphor layer formed on the support side and constituted of particles of the first phosphor having average particle diameter D1 and range coefficient k, which expresses a particle size distribution, in the range of 1.3 to 1.8, and a second phosphor layer formed on the protective film side and constituted of particles of the second phosphor having average particle diameter D2 (>D1) and range coefficient k, which expresses a particle size distribution, in the range of 1.5 to 2.0. The ratio (CW1:CW2) of coating weight per unit area of the particles of the first phosphor in the first phosphor layer CW1 and coating weight per unit area of the particles of the second phosphor in the second phosphor layer CW2 is in the range of from 8:2 to 6:4. According to such intensifying screens, even when phosphors of, for instance, high emission efficiency are employed, while preventing lowering of speed and sharpness from occurring, granularity can be improved.
摘要翻译：一种增强屏幕，包括支撑体，设置在支撑体上的荧光体层和设置在荧光体层上的保护膜。荧光体层包括形成在支撑侧并由平均粒径D1和范围系数k表示粒度分布在1.3至1.8的范围内的第一荧光体的颗粒构成的第一荧光体层和第二荧光体由形成在保护膜侧的由在平均粒径D2（> D1）和范围系数k（表示粒度分布）的第二荧光体的颗粒构成的层在1.5至2.0的范围内。第一荧光体层CW1中的第一荧光体的粒子的单位面积的涂布重量的比例（CW1：CW2）和第二荧光体层CW2中的第二荧光体的粒子的每单位面积的涂布重量的比例在从8：2到6：4。根据这样的增强屏幕，即使采用例如高发光效率的荧光体，也能够防止速度和锐度的降低而发生粒度的提高。

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