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1. 发明专利

DE3629180A1 未知
公开(公告)号：DE3629180A1
公开(公告)日：1987-03-19
申请号：DE3629180
申请日：1986-08-28
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： YAMADA HIROMICHI , TSUKUDA YASUO , SUZUKI ATSUSHI , YAMAMOTO HAJIME , YOSHIDA MINORU , MAIO KENJI , FUJII HIDEJI
IPC分类号： C09K11/84 , G01T1/20 , G01T1/202 , G01D5/26 , C09K11/02
摘要： A radiation detector comprises a scintillator capable of emitting light by radiation and a photodetector for detecting the light emitted from the scintillator, the scintillator being composed of a sintered body prepared by sintering rare earth oxysulfide as a body starting material containing a densification additive by hot isostactic pressing. The sintered body has a high light output and a high density.

2. 发明专利

JPS6318286A RADIATION DETECTOR 失效
公开(公告)号：JPS6318286A
公开(公告)日：1988-01-26
申请号：JP16184786
申请日：1986-07-11
申请人： HITACHI LTD , HITACHI MEDICAL CORP , HITACHI METALS LTD
发明人： YAMADA HIROMICHI , TSUKUDA YASUO , SUZUKI ATSUSHI , YAMAMOTO AKIRA , YOSHIDA MINORU , MAIO KENJI , FUJII HIDEJI
IPC分类号： G01T1/20 , C09K11/85
摘要： PURPOSE:To obtain a detector with a high light output, by using a scintillator powder as given by a specified formula. CONSTITUTION:A scintillator powder that emits light by radiation employs a sintered body with a high light transmissivity having a composition of the formula (Ln1-x-yPrxCey)2C2S:(X), wherein Ln represents one or more kinds of elements selected from a group of Gd, La and Y, (x) are value in a range of 3X10 . The amount of X is expressed by 2-1,000ppm (by weight). One or more are selected from Li2GeF6, (NH4)2GeF6, Na2GeF6, Na2GeF6 and the like to be added at a rate of 0.001-10wt% to the powder as sintering assistant, the mixture is vacuum sealed in a metal container to be subjected to a hot static pressure and furthermore, annealed to obtain a light transmitting sintered scintillator, which is combined with a photodetector to detect emission thereof. The sintering assistant to obtain light transmissivity is preferably 0.01-4wt% for the adding amount, 1,100-1,500 deg.C for the temperature and about 800-1,800atm. for the pressure. Annealing for a higher emission output is performed in an inert gas.

3. 发明专利

JPH01242686A PRODUCTION OF CERAMIC SCINTILLATOR 失效
公开(公告)号：JPH01242686A
公开(公告)日：1989-09-27
申请号：JP6744688
申请日：1988-03-23
申请人： HITACHI LTD , HITACHI METALS LTD , HITACHI MEDICAL CORP
发明人： ITO YUKIO , YOSHIDA MINORU , TAKEUCHI HIROYUKI , TODA AKIZO , YAMADA TAKAMICHI , TSUKUDA YASUO
IPC分类号： G01T1/20 , C04B35/64 , C04B35/645 , C09K11/00
摘要： PURPOSE:To make it possible to produce a high-quality crack-free ceramic scintillator, by using a metal having a coefficient of thermal expansion substantially equal to that of the sintered substance as the raw material for a metallic capsule in which the material is packed in sintering a rare earth oxysulfide by the HIP method. CONSTITUTION:In sintering a rare earth oxysulfide [e.g., a compound of the formula (wherein x is in the range of 3X10 , and the amount of F is 2-1000ppm)] by the hot isostatic press method (hereinbelow referred to as HIP), a metal having a coefficient of thermal expansion substantially equal to that of the sintered substance is used as the raw material for a metallic capsule in which the material is packed together with a sintering aid (e.g., Li2GeF6). For instance, iron-nickel steel is the most suitable for the rare earth oxysulfide of the above formula. By performing HIP by using this capsule, a crack-free ceramic scintillator can be made in good yields. Therefore, the ceramic scintillator obtained above is suitable as a material for a radiation-detecting element for X-ray CT.

4. 发明专利

DE3900245A1 未知
公开(公告)号：DE3900245A1
公开(公告)日：1989-07-20
申请号：DE3900245
申请日：1989-01-05
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： FUJII HIDEJI , NAKAGAWA MANABU , YOSHIDA MINORU , KAWAGUCHI FUMIO , TAKAHASHI TETSUHIKO , HAYAKAWA TAKAYUKI
IPC分类号： G01T1/20 , H01L27/142 , H01L31/0232
摘要： In a radiation detector, scintillation material flouoresces and the produced light is converted to electrical energy in an adjacent converter, separators are provided in spaces between the adjacent scintillators and converters. The separators may have a greater length than the adjacent scintillators, so that they will extend beyond to reduce cross-talk. The separators can extend toward the source of radiation for a height substantially greater than, and particularly five times, the height of the spaces between the adjacent scintillators to prevent X-ray scattering and function as a collimator. Optically opaque adhesive may be provided on the opposite ends of separators and pairs of scintillators and collimators, to prevent cross-talk.

5. 发明专利

DE3438984A1 未知
公开(公告)号：DE3438984A1
公开(公告)日：1985-05-15
申请号：DE3438984
申请日：1984-10-24
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： UMETANI KEIJI , SUZUKI ATSUSHI , NAKAGAWA MANABU , YOSHIDA MINORU , KAWAGUCHI FUMIO , YAMADA HIROMICHI , KOIKE KOUICHI
IPC分类号： G01T1/164 , G01T1/20 , G01T1/29
摘要： A multielement radiation detector in which many elements are arranged in array. Each element includes a scintillator which is tilted with respect to the incident direction of radiant rays, and a silicon photodiode which is opposed to the plane of incidence of the scintillator. The light-receiving plane of the silicon photodiode is tilted to meet the inclination of the scintillator. Therefore, the gradient of detection sensitivity distribution is reduced in the thickness direction of the detectors.

6. 发明专利

JPS5946877A Radiation detector 失效
标题翻译：辐射探测器
公开(公告)号：JPS5946877A
公开(公告)日：1984-03-16
申请号：JP15674882
申请日：1982-09-10
申请人： Hitachi Ltd , Hitachi Medical Corp
发明人： YOSHIDA MINORU , YAMADA HIROMICHI , UCHIDA YOUKO , KOUNO HIDEKI , TAKAGI HIROSHI
IPC分类号： G01N23/04 , G01T1/164 , G01T1/20
CPC分类号： G01T1/1642 , G01T1/2018
摘要： PURPOSE: To make effective use of incident radiations and to obtain a reliable radiation detector with the package construction of high productivity, by pressing a partition plate and a light reflection plate of thin sheet to a means for isolating optically adjacent radiation detectors by using a cushion material.
CONSTITUTION: The radiations which are made incident to the detector enter first a keep plate 12 in common use as a light shielding plate and the transmitted thereto, then the radiations arrive at a cushion material 10 which is mostly air and absorbs less radiations. The radiations transmitted through said material arrive at a scintillator after transmitting through a light reflection plate 11. Since the plate 11 is thin, the shape is deformed in conformity with the ruggedness of a scintillator 6 and a partition plate 9 and is further pressed by the material 10 and the plate 12, by which the reflection plate is brought into tight contact with the scintillator 6 and the partition plate. Light is thereby reflected and the adjacent detectors are optically isolated. A thin Al sheet having a specular surface or a thin sheet having high reflectivity by depositing Al with evaporation on a polymer resin sheet and forming a specular surface is used for the plate 11.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了有效利用入射辐射，并通过将薄片的隔板和光反射板压到隔离光学相邻辐射探测器的装置上，通过使用缓冲垫来实现具有高生产率的封装结构的可靠的辐射探测器材料。构成：入射到检测器的辐射首先进入通常使用的保护板12作为遮光板并传送到其上，然后辐射到达主要为空气并且吸收较少辐射的缓冲材料10。通过所述材料透射的辐射在透过光反射板11后到达闪烁体。由于板11薄，所以形状根据闪烁体6和隔板9的坚固性而变形，并进一步被材料10和板12，反射板与闪烁体6和隔板紧密接触。因此光被反射，并且相邻的检测器被光学隔离。板11使用具有镜面的薄铝板或具有高反射率的薄片，其通过在聚合物树脂片上蒸镀Al并形成镜面而形成镜面。

7. 发明专利

JPS5920882A Radiation detector 失效
标题翻译：辐射探测器
公开(公告)号：JPS5920882A
公开(公告)日：1984-02-02
申请号：JP13034082
申请日：1982-07-28
申请人： Hitachi Ltd , Hitachi Medical Corp
发明人： KUBOTA SHIGEO , YOSHIDA MINORU , TAKAHASHI TOSHIO , KOUNO HIDEKI , HAYAKAWA TAKAYUKI , MATSUOKA SADAO , KATOU SHIGEO , SUZUKI KOUJI
IPC分类号： G01N23/04 , G01T1/164 , G01T1/20 , G01T1/202
CPC分类号： G01T1/2018 , G01T1/1644 , G01T1/202
摘要： PURPOSE:To elevate the detection accuracy and reliability with a higher productivity by inserting shield plates having scintillators into a plurality of grooves provided at a specified space on a substrate while photodetectors are arranged between the grooves. CONSTITUTION:A special glass substrate 22 on the surface of a substrate 20 which is a sector-shaped flat plate centered on the X ray source is photo etched to form a plurality of grooves 23 radially at a specified space and radiation shield plates 13 having scintillator 11 bonded thereon are inserted thereinto. Radiation 2 entered into the scintillators 11 is excited to be converted to light, taken out of a wire 26 as electrical signal of a photo detector 12 mounted on the substrate 20 and connected to a processing circuit with a contact plug 32. Thus, one detector is made up of a pair of shield plates 13 scintillators 11 and a pair of photo detectors 12. This enables the detectors to be retained at a proper accuracy of geometrical position with respect to the X ray source by etching grooves thereby elevating the reliability and stability of the apparatus.
摘要翻译：目的：通过将具有闪烁体的屏蔽板插入设置在基板上的指定空间的多个凹槽中，同时在凹槽之间布置光电检测器，从而提高检测精度和可靠性。构成：作为以X射线源为中心的扇形平板的基板20的表面上的特殊玻璃基板22被光蚀刻以在规定的空间径向形成多个槽23，并且具有闪烁体的辐射屏蔽板13 11接合在其上。被激发的入射到闪烁体11中的辐射2被转换为光线，作为安装在基板20上的光电检测器12的电信号，从导线26中取出，并且连接到具有接触插塞32的处理电路。因此，一个检测器由一对屏蔽板13的闪烁体11和一对光电检测器12组成。这使得能够通过蚀刻槽将检测器保持在相对于X射线源的几何位置的适当精度，从而提高可靠性和稳定性的装置。

8. 发明专利

JPS58196058A Semiconductor photo detector 失效
标题翻译： SEMICONDUCTOR PHOTO DETECTOR
公开(公告)号：JPS58196058A
公开(公告)日：1983-11-15
申请号：JP7841082
申请日：1982-05-12
申请人： Hitachi Ltd , Hitachi Medical Corp
发明人： YOSHIDA MINORU , YAMADA TOSHIMICHI , UCHIDA YOUKO , KOUNO HIDEKI
IPC分类号： H01L31/09 , H01L31/02
CPC分类号： H01L31/02
摘要： PURPOSE:To enable to perform the fixing of a semiconductor photo detector on a substrate securely and easily, by providing metals for fixing on the semiconductor photo detector. CONSTITUTION:Metallized parts 13a are formed at both end parts of an insulation substrate 5 which constitutes the semiconductor photo detector, and the surfaces thereof are plated with Ag, etc. This metallized part 13a serves as the mount part to the substrate 9. In other words, when a plurality of the detectors are mounted on the substrate 9, each detector is arranged between printing wiring patterns 10 formed on the substrate 9. Next, the metallized part 13a and the wiring pattern 10 are fixed each other by means of solder 11. Such a constitution enables to perform the fixing of the semiconductor photo detectors on the substrate easily and securely. Mechanical loads can be prevented from being applied to the signal take-out pins 8 of the detector.
摘要翻译：目的：通过提供用于固定在半导体光电检测器上的金属，能够牢固且容易地将半导体光电检测器固定在基板上。构成：金属化部分13a形成在构成半导体光电检测器的绝缘基板5的两个端部，并且其表面镀有Ag等。该金属化部分13a用作到基板9的安装部分。在其他当多个检测器安装在基板9上时，每个检测器布置在形成在基板9上的印刷布线图案10之间。接下来，金属化部分13a和布线图案10通过焊料11彼此固定这种结构能够容易且可靠地进行半导体光检测器在基板上的固定。可以防止机械负载施加到检测器的信号取出销8。

9. 发明公开

EP1028154A4 PHOSPHOR, AND RADIATION DETECTOR AND X-RAY CT UNIT EACH EQUIPPED THEREWITH 失效
标题翻译：磷和X射线探测器和X射线计算单位，都与这种磷光体
公开(公告)号：EP1028154A4
公开(公告)日：2001-03-07
申请号：EP98931011
申请日：1998-07-08
申请人： HITACHI MEDICAL CORP
发明人： YAMADA HIROMICHI , MIURA ICHIRO , DOI MOTOMICHI , MIYAZAKI OSAMU , YOSHIDA MINORU
IPC分类号： G01T1/20 , A61B6/03 , C09K11/77 , C09K11/84 , C09K11/86 , G01T1/202 , G21K4/00 , C09K11/08
CPC分类号： G21K4/00 , C04B35/547 , C04B35/6455 , C04B2235/3203 , C04B2235/3208 , C04B2235/3213 , C04B2235/3224 , C04B2235/3225 , C04B2235/3227 , C04B2235/3229 , C04B2235/3284 , C04B2235/3287 , C04B2235/3409 , C04B2235/443 , C04B2235/445 , C04B2235/447 , C09K11/7789 , G21K2004/06
摘要： A phosphor represented by the general formula (L1-x-y-z-d EuxMyCezM'd)2O2S (wherein L is at least one kind of element selected among Gd, La and Y; M at least one kind of element selected between Tb and Pr; M' at least one kind of element selected among Ca, Sr and Zn; x satisfies 0.001 ; z, 0 ; and d, 0 ) and manufactured by the hot hydrostatic pressing method. The phosphor has a high light permeability, a high luminous efficacy and a reduced after-glow. A radiation detector comprising a combination of this phosphor with a silicon photodiode has an excellent wavelength matching capability, is capable of obtaining a high luminous output, and is suitably used as an X-ray detector of an X-ray CT unit or the like.

10. 发明专利

JPH02132396A RADIATION DETECTOR 失效
公开(公告)号：JPH02132396A
公开(公告)日：1990-05-21
申请号：JP23163589
申请日：1989-09-08
申请人： HITACHI LTD , HITACHI MEDICAL CORP
发明人： YOSHIDA MINORU , YAMADA TAKAMICHI , UCHIDA YOKO , KONO HIDEKI , TAKAGI HIROSHI
IPC分类号： G01T1/161 , A61B6/03 , G01T1/20
摘要： PURPOSE:To reduce crosstalk by forming detecting elements of photodiodes arrayed on a substrate at fine intervals and scintillators arranged on the respective photodiodes. CONSTITUTION:Extremely small grooves are formed in a printed board 8 and a light shield plate 5 where Si photodiodes 7 with which scintillator crystal 6 is coupled optically are arrayed and installed at the specific intervals and partition plates 9 for respective detecting elements are inserted into the grooves. Thus, the partition plates 9 are inserted and when grooves which prevent a light leak between adjacent detecting elements are formed, the grooves need to be at least 1mm. In this case, the intensity of radiation is 0.5 - several % and a difference in elements due to the leak of light or radiation at the tip part of the partition late between detecting element is reduced extremely.

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