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公开(公告)号：US20100183117A1
公开(公告)日：2010-07-22
申请号：US12669556
申请日：2008-07-18
CPC分类号： A61B6/405 , A61B6/4021 , A61B6/482 , H01J35/06 , H01J35/26 , H01J2235/068 , H05G1/58
摘要： There are provided an X-ray generating apparatus capable of switching X-ray beams of high energy and low energy to each other at high speed, and an X-ray CT apparatus capable of performing high-speed and high-quality multi-energy imaging by using the same. The X-ray generating apparatus is constructed by an X-ray tube 9 having two anodes 200a, 200b, a rotational anode 204 for radiating X-ray from an X-ray focal point by electron beams emitted from filaments of these cathodes, and two grid electrodes 202a and 202b for controlling emission of the electron beams, a tube voltage generator 9a and a tube voltage controller 9d1 for controlling an X-ray condition, a filament heater 9b and a tube current controller 9d2, a grid voltage generator 9c and a grid opening/closing controller 9d3, and a grid switching unit 9e. High energy X-ray and low energy X-ray are switched and emitted to an examinee every adjacent projection angles, thereby collecting projection data.
摘要翻译： 提供了能够高速切换高能量低能量的X射线束的X射线产生装置，能够进行高速，高质量的多能量成像的X射线CT装置 通过使用相同。 X射线发生装置由具有两个阳极200a，200b的X射线管9构成，用于通过从这些阴极的细丝发射的电子束从X射线焦点放射X射线的旋转阳极204和 用于控制电子束发射的栅电极202a和202b，用于控制X射线条件的管电压发生器9a和管电压控制器9d1，灯丝加热器9b和管电流控制器9d2，电网电压发生器9c和 网格打开/关闭控制器9d3和网格切换单元9e。 高能X射线和低能量X射线被切换并发射到每个相邻投影角度的受检者，从而收集投影数据。
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公开(公告)号：US5561697A
公开(公告)日：1996-10-01
申请号：US372124
申请日：1995-01-13
申请人： Atsuko Takafuji , Katsuya Sugiyama , Katsuhiro Kuroda , Keiji Koyanagi , Ichiro Miura , Masatoshi Nishimura
发明人： Atsuko Takafuji , Katsuya Sugiyama , Katsuhiro Kuroda , Keiji Koyanagi , Ichiro Miura , Masatoshi Nishimura
CPC分类号： H05H13/10
摘要： Disclosed is a microtron electron accelerator having an accelerating cavity accepting microwave electric power for generating a high-frequency accelerating electric field E disposed within a uniform magnetic field B and adapted such that electrons are accelerated and caused to move in a circular trajectory under action of the magnetic field B and the electric field E, comprising an electron source formed of a cathode and an anode, which has a minute slit allowing an electron beam extracted from the cathode to pass therethrough, disposed on the outer side of the wall of the accelerating cavity, a first electron beam through-hole and a second electron beam through-hole formed in the wall of the accelerating cavity in two positions, with the electron source therebetween, along the decreasing or increasing direction of the strength of the electric field E in the accelerating cavity, and a third electron beam through-hole formed in the wall of the accelerating cavity in a position in confrontation with the first electron beam through-hole across the inner space of the accelerating cavity. By adopting the above described structure, it has been made possible to have the energy gain within the accelerating cavity at each time of acceleration increased and to have contamination of the inner surface of the accelerating cavity by evaporated cathode material decreased, and as a result, it is made possible to obtain a microtron electron accelerator smaller in size and capable of stably providing a high-energy electron beam.
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公开(公告)号：US5399873A
公开(公告)日：1995-03-21
申请号：US165919
申请日：1993-12-14
申请人： Atsuko Takafuji , Katsuya Sugiyama , Katsuhiro Kuroda , Keiji Koyanagi , Ichiro Miura , Masatoshi Nishimura
发明人： Atsuko Takafuji , Katsuya Sugiyama , Katsuhiro Kuroda , Keiji Koyanagi , Ichiro Miura , Masatoshi Nishimura
CPC分类号： H05H13/10
摘要： Disclosed is a microtron electron accelerator having an accelerating cavity accepting microwave electric power for generating a high-frequency accelerating electric field E disposed within a uniform magnetic field B and adapted such that electrons are accelerated and caused to move in a circular trajectory under action of the magnetic field B and the electric field E, comprising an electron source formed of a cathode and an anode, which has a minute slit allowing an electron beam extracted from the cathode to pass therethrough, disposed on the outer side of the wall of the accelerating cavity, a first electron beam through-hole and a second electron beam through-hole formed in the wall of the accelerating cavity in two positions, with the electron source therebetween, along the decreasing or increasing direction of the strength of the electric field E in the accelerating cavity, and a third electron beam through-hole formed in the wall of the accelerating cavity in a position in confrontation with the first electron beam through-hole across the inner space of the accelerating cavity. By adopting the above described structure, it has been made possible to have the energy gain within the accelerating cavity at each time of acceleration increased and to have contamination of the inner surface of the accelerating cavity by evaporated cathode material decreased, and as a result, it is made possible to obtain a microtron electron accelerator smaller in size and capable of stably providing a high-energy electron beam.
摘要翻译： 公开了一种微电子电子加速器，其具有接受微波功率的加速腔，用于产生设置在均匀磁场B内的高频加速电场E，并适于使电子加速并使其在圆周轨迹中移动， 磁场B和电场E，包括由阴极和阳极形成的电子源，其具有允许从阴极抽出的电子束通过的微小狭缝，其设置在加速腔的壁的外侧 形成在加速腔的壁中的两个位置的第一电子束通孔和第二电子束通孔，其中电子源沿着电场E的强度的减小或增加的方向 加速腔和形成在加速腔的壁中的第三电子束通孔 第一个电子束通孔穿过加速腔的内部空间。 通过采用上述结构，可以在每个加速时间内使加速腔内的能量增益增加，并且通过蒸发的正极材料使加速腔内表面的污染减小，结果， 可以获得尺寸较小并能够稳定地提供高能电子束的微电子电子加速器。
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公开(公告)号：US08208600B2
公开(公告)日：2012-06-26
申请号：US12669556
申请日：2008-07-18
IPC分类号： G01N23/00
CPC分类号： A61B6/405 , A61B6/4021 , A61B6/482 , H01J35/06 , H01J35/26 , H01J2235/068 , H05G1/58
摘要： There are provided an X-ray generating apparatus capable of switching X-ray beams of high energy and low energy to each other at high speed, and an X-ray CT apparatus capable of performing high-speed and high-quality multi-energy imaging by using the same. The X-ray generating apparatus is constructed by an X-ray tube 9 having two anodes 200a, 200b, a rotational anode 204 for radiating X-ray from an X-ray focal point by electron beams emitted from filaments of these cathodes, and two grid electrodes 202a and 202b for controlling emission of the electron beams, a tube voltage generator 9a and a tube voltage controller 9d1 for controlling an X-ray condition, a filament heater 9b and a tube current controller 9d2, a grid voltage generator 9c and a grid opening/closing controller 9d3, and a grid switching unit 9e. High energy X-ray and low energy X-ray are switched and emitted to an examinee every adjacent projection angles, thereby collecting projection data.
摘要翻译： 提供了能够高速切换高能量低能量的X射线束的X射线产生装置，能够进行高速，高质量的多能量成像的X射线CT装置 通过使用相同。 X射线发生装置由具有两个阳极200a，200b的X射线管9构成，用于通过从这些阴极的细丝发射的电子束从X射线焦点放射X射线的旋转阳极204和 用于控制电子束发射的栅电极202a和202b，用于控制X射线条件的管电压发生器9a和管电压控制器9d1，灯丝加热器9b和管电流控制器9d2，电网电压发生器9c和 网格打开/关闭控制器9d3和网格切换单元9e。 高能X射线和低能量X射线被切换并发射到每个相邻投影角度的受检者，从而收集投影数据。
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