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44 条记录 (耗时 0.033 秒)

    Fuel assembly
    1.
    发明授权
    Fuel assembly 失效
    燃油组件

    公开(公告)号：US4695425A

    公开(公告)日：1987-09-22

    申请号：US657082

    申请日：1984-10-03

    申请人： Motoo Aoyama ,  Hiromi Maruyama ,  Kikuo Umegaki ,  Sadao Uchikawa

    发明人： Motoo Aoyama ,  Hiromi Maruyama ,  Kikuo Umegaki ,  Sadao Uchikawa

    IPC分类号： G21C3/328 ,  G21C3/32

    CPC分类号： G21C3/328 ,  G21Y2002/201 ,  G21Y2004/10 ,  G21Y2004/30 ,  G21Y2004/60 ,  Y02E30/38

    摘要： A fuel assembly having a plurality of fuel rods arranged in a lattice state and being charged into a core of a nuclear reactor using light water as a coolant, which comprises the fuel rods consisting of a first group of fuel rods and a second group of fuel rods, an average concentration of U.sup.236 in the first group being lower than an average concentration of U.sup.236 in the second group, and the first group and the second group being arranged unevenly in the fuel assembly, preferably, a fuel assembly wherein the first group is arranged at the periphery of the fuel assembly, and the second group being arranged at positions other than the periphery, has a low reactivity penalty due to U.sup.236 and can reduce the requirements for natural uranium.

    摘要翻译： 一种燃料组件，其具有以格状状布置的多个燃料棒，并使用轻水作为冷却剂装入核反应堆的核心，燃料棒包括由第一组燃料棒组成的燃料棒和第二组燃料 第一组中的U236的平均浓度低于第二组中的U236的平均浓度，并且第一组和第二组不均匀地布置在燃料组件中，优选地，其中第一组为 布置在燃料组件的周边，并且第二组布置在除了外围之外的位置，由于U236而具有低的反应性损失，并且可以降低对天然铀的要求。

    Light water moderation type nuclear reactor
    2.
    发明授权
    Light water moderation type nuclear reactor 失效
    轻水缓和型核反应堆

    公开(公告)号：US4851181A

    公开(公告)日：1989-07-25

    申请号：US123542

    申请日：1987-11-20

    申请人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

    发明人： Renzo Takeda ,  Kanji Kato ,  Tadahiro Ohnishi ,  Sadao Uchikawa ,  Hiromi Maruyama ,  Motoo Aoyama ,  Kikuo Umegaki ,  Yasunori Bessho ,  Motomasa Fuse ,  Michiro Yokomi

    IPC分类号： G21C5/12 ,  G21C1/08 ,  G21C3/328 ,  G21C5/00 ,  G21C5/18

    CPC分类号： G21C5/18 ,  Y02E30/40

    摘要： In a light water moderation type nuclear reactor with the once-through method, the reactor core is divided into a central area and a peripheral area by a partition member, a first fuel assembly is arranged in the central area (high conversion area) and a second fuel assembly is arranged in the peripheral area. The ratio (r.sub.H/U) of the number of hydrogen atoms to that of uranium atoms in the central area is smaller than that of the ratio in the peripheral area and the second fuel assembly in the peripheral area is formed of fuel rods of the first fuel assembly having been previously burned in the central area and moved into the peripheral area. The plutonium production increases and uranium consumption is reduced during the first half of the lifetime of the fuel rods in the high conversion area with the take-up burn up increasing during the second half of the lifetime of the fuel rods in the burner area.

    摘要翻译： 在具有一次通过方法的轻水调节型核反应堆中，反应堆堆芯通过分隔构件分成中心区域和周边区域，第一燃料组件布置在中心区域（高转化区域）和 第二燃料组件布置在周边区域中。 中心区域的氢原子数与铀原子数的比值（rH / U）小于外围区域的比例，并且周边区域中的第二燃料组件的比率（rH / U）由第一 燃料组件先前已经在中心区域燃烧并移动到周边区域。 在高转化率区域的燃料棒的寿命的前半期，钚的生产增加，铀的消耗减少，在燃烧器区域的燃料棒的寿命的后半期，吸收燃烧增加。

    Radiological imaging apparatus
    3.
    发明申请
    Radiological imaging apparatus 有权
    放射成像装置

    公开(公告)号：US20080137804A1

    公开(公告)日：2008-06-12

    申请号：US11907115

    申请日：2007-10-09

    申请人： Shinichi Kojima ,  Takashi Okazaki ,  Yuuichirou Ueno ,  Kikuo Umegaki ,  Kensuke Amemiya ,  Kazuhiro Takeuchi ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Norihito Yanagita

    发明人： Shinichi Kojima ,  Takashi Okazaki ,  Yuuichirou Ueno ,  Kikuo Umegaki ,  Kensuke Amemiya ,  Kazuhiro Takeuchi ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Norihito Yanagita

    IPC分类号： G01N23/00

    CPC分类号： G01T1/1611 ,  A61B6/037 ,  A61B6/4241 ,  A61B6/5235 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2985 ,  Y10S378/901

    摘要： A radiological imaging apparatus of the present invention comprises an image pickup device and a medical examinee holding device that is provided with a bed. The image pickup device includes a large number of radiation detectors and radiation detector support plates. A large number of radiation detectors are mounted around the circumference of a through-hole and arranged in the axial direction of the through-hole. The radiation detectors are arranged in three layers formed radially with respect to the center of the through-hole and mounted on the lateral surfaces of the radiation detector support plates. Since the radiation detectors are not only arranged in the axial direction and circumferential direction of the through-hole but also arrayed in the radial direction, it is possible to obtain accurate information about a γ-ray arrival position in the radial direction of the through-hole (the positional information about a radiation detector from which a γ-ray image pickup signal is output). The use of accurate information about γ-ray arrival increases the tomogram accuracy. As a result, the present invention enhances the tomogram accuracy, that is, the PET examination accuracy.

    摘要翻译： 本发明的放射学成像装置包括：图像拾取装置和设有床的医疗检查者保持装置。 图像拾取装置包括大量的辐射检测器和辐射检测器支撑板。 大量的辐射探测器安装在通孔的圆周周围并沿通孔的轴向布置。 辐射检测器被布置成相对于通孔的中心径向形成的三层，并且安装在辐射检测器支撑板的侧表面上。 由于辐射检测器不仅沿着通孔的轴向方向和圆周方向布置，而且沿径向排列，可以获得关于通孔的径向方向上的伽马射线到达位置的准确信息， （关于从其输出伽马射线摄像信号的放射线检测器的位置信息）。 使用关于伽马射线到达的准确信息增加了断层图像的准确性。 结果，本发明增强了断层图像精度，即PET检查精度。

    Tomogram creating device and radiation examining apparatus
    4.
    发明授权
    Tomogram creating device and radiation examining apparatus 失效
    Tomogram创建装置和辐射检查装置

    公开(公告)号：US07251523B2

    公开(公告)日：2007-07-31

    申请号：US10253489

    申请日：2002-09-25

    申请人： Shinichi Kojima ,  Kikuo Umegaki ,  Yuuichirou Ueno ,  Kensuke Amemiya ,  Hiroshi Kitaguchi ,  Takashi Okazaki ,  Kazuma Yokoi

    发明人： Shinichi Kojima ,  Kikuo Umegaki ,  Yuuichirou Ueno ,  Kensuke Amemiya ,  Hiroshi Kitaguchi ,  Takashi Okazaki ,  Kazuma Yokoi

    IPC分类号： A61B6/00

    CPC分类号： A61B6/032 ,  A61B6/037 ,  A61B6/5235

    摘要： An X-ray CT examination using a radiation examining apparatus corresponding to an X-ray CT is effected on an unbreathed examinee. A tomogram creating apparatus creates a first tomogram, based on an X-ray detect signal outputted from a corresponding radiation detector of the radiation examining apparatus. An X-ray CT examination and a PET examination using a radiation examining apparatus are effected on the breathed examinee. The tomogram creating apparatus creates a second tomogram, based on an X-ray detect signal outputted from a corresponding radiation detector of the radiation examining apparatus and creates a third tomogram, based on a γ-ray detect signal outputted from the corresponding radiation detector. Correction information is created based on the first and second tomograms. The third tomogram is corrected using the correction information. Therefore, the corrected third tomogram can be obtained which is not affected by a swing produced with breathing.

    摘要翻译： 使用对应于X射线CT的放射线检查装置的X射线CT检查在未呼吸的受检者上进行。 断层图像生成装置基于从放射线检查装置的对应的放射线检测器输出的X射线检测信号，生成第一断层图像。 在呼吸的受检者上进行X射线CT检查和使用放射线检查装置的PET检查。 断层图像生成装置基于从放射线检查装置的对应的放射线检测器输出的X射线检测信号，根据从相应的放射线检测器输出的γ射线检测信号，生成第三断层图像。 基于第一和第二断层图像创建校正信息。 使用校正信息来校正第三断层图像。 因此，可以获得不受由呼吸产生的挥杆影响的校正的第三层析图像。

    Particle beam irradiarion system
    7.
    发明申请
    Particle beam irradiarion system 有权
    粒子束辐射系统

    公开(公告)号：US20060065855A1

    公开(公告)日：2006-03-30

    申请号：US11206150

    申请日：2005-08-18

    申请人： Shunji Kakiuchi ,  Akiko Kakiuchi ,  Kikuo Umegaki ,  Kazuo Hiramoto

    发明人： Shunji Kakiuchi ,  Akiko Kakiuchi ,  Kikuo Umegaki ,  Kazuo Hiramoto

    IPC分类号： G21K5/10

    CPC分类号： H05H7/04 ,  G21K5/04

    摘要： A particle beam irradiation system which can increase an availability factor. An ion beam extracted from one proton beam linac is bent at 90 degrees by a switching magnet and is introduced to RI production equipment through a beam line. In the RI production equipment, a RI is produced using the introduced ion beam. An ion beam extracted from the other proton beam linac is bent at 90 degrees by the switching magnet and is introduced to a synchrotron through a beam line. The ion beam extracted from the synchrotron is irradiated to a patient from irradiation equipment. If one proton beam linac comes into an abnormal state, the one proton beam linac is stopped in operation and checked. During the check, the ion beam extracted from the other proton beam linac is selectively introduced to the RI production equipment and the synchrotron by the switching magnet.

    摘要翻译： 可以增加可用性因素的粒子束照射系统。 从一个质子束线性加速器提取的离子束通过切换磁体以90度弯曲，并通过射束线被引入RI生产设备。 在RI生产设备中，使用引入的离子束产生RI。 从另一质子束直线加速器提取的离子束通过切换磁体以90度弯曲，并通过射束线被引入同步加速器。 从同步加速器提取的离子束从照射设备照射到患者身上。 如果一个质子束线性加速器处于异常状态，则一个质子束线性加速器停止运行并进行检查。 在检查期间，从其他质子束线性加速器提取的离子束通过切换磁体选择性地引入RI生产设备和同步加速器。

    Radiological imaging apparatus
    8.
    发明授权
    Radiological imaging apparatus 有权
    放射成像装置

    公开(公告)号：US07627082B2

    公开(公告)日：2009-12-01

    申请号：US11907115

    申请日：2007-10-09

    申请人： Shinichi Kojima ,  Takashi Okazaki ,  Yuuichirou Ueno ,  Kikuo Umegaki ,  Kensuke Amemiya ,  Kazuhiro Takeuchi ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Norihito Yanagita

    发明人： Shinichi Kojima ,  Takashi Okazaki ,  Yuuichirou Ueno ,  Kikuo Umegaki ,  Kensuke Amemiya ,  Kazuhiro Takeuchi ,  Hiroshi Kitaguchi ,  Kazuma Yokoi ,  Norihito Yanagita

    IPC分类号： A61B6/00

    CPC分类号： G01T1/1611 ,  A61B6/037 ,  A61B6/4241 ,  A61B6/5235 ,  G01N23/046 ,  G01N2223/419 ,  G01N2223/612 ,  G01T1/2985 ,  Y10S378/901

    摘要： A radiological imaging apparatus of the present invention comprises an image pickup device and a medical examinee holding device that is provided with a bed. The image pickup device includes a large number of radiation detectors and radiation detector support plates. A large number of radiation detectors are mounted around the circumference of a through-hole and arranged in the axial direction of the through-hole. The radiation detectors are arranged in three layers formed radically with respect to the center of the through-hole and mounted on the lateral surfaces of the radiation detector support plates. Since the radiation detectors are not only arranged in the axial direction and circumferential direction of the through-hole but also arrayed in the radial direction, it is possible to obtain accurate information about a γ-ray arrival position in the radial direction of the through-hole (the positional information about a radiation detector from which a γ-ray image pickup signal is output). The use of accurate information about γ-ray arrival increases the tomogram accuracy. As a result, the present invention enhances the tomogram accuracy, that is, the PET examination accuracy.

    摘要翻译： 本发明的放射学成像装置包括：图像拾取装置和设有床的医疗检查者保持装置。 图像拾取装置包括大量的辐射检测器和辐射检测器支撑板。 大量的辐射探测器安装在通孔的圆周周围并沿通孔的轴向布置。 辐射检测器被布置成相对于通孔的中心从根部形成的三层，并安装在辐射检测器支撑板的侧表面上。 由于辐射检测器不仅沿着通孔的轴向方向和圆周方向布置，而且沿径向排列，可以获得关于通孔的径向方向上的伽马射线到达位置的准确信息， （关于从其输出伽马射线摄像信号的放射线检测器的位置信息）。 使用关于伽马射线到达的准确信息增加了断层图像的准确性。 结果，本发明增强了断层图像精度，即PET检查精度。