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公开(公告)号：US08300768B2
公开(公告)日：2012-10-30
申请号：US12868437
申请日：2010-08-25
IPC分类号： H01J35/00
CPC分类号： A61B6/032 , A61B6/4021 , H01J35/04 , H01J35/06 , H01J35/14 , H01J35/30 , H01J2235/06 , H05G1/52
摘要： An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.
摘要翻译： X射线管包括：具有凹陷的Wehnelt电极; 布置在Wehnelt电极的凹陷中并构造成当电流通过时发射电子束的灯丝; 配置为响应于入射电子束发射X射线的阳极; 电极部件，由至少一对电极部件构成，所述电极部件跨越所述电子束的路径彼此面对，对每个所述电极部件施加电压; 电压控制器，被配置为控制施加到所述电极部分的电压; 以及屏蔽构件，其布置成与所述Wehnelt电极接触并且构造成通过突出部覆盖所述凹陷的一部分。
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公开(公告)号：US20110051884A1
公开(公告)日：2011-03-03
申请号：US12868437
申请日：2010-08-25
CPC分类号： A61B6/032 , A61B6/4021 , H01J35/04 , H01J35/06 , H01J35/14 , H01J35/30 , H01J2235/06 , H05G1/52
摘要： An X-ray tube includes: a Wehnelt electrode having a dent inside; a filament arranged in the dent of the Wehnelt electrode and configured to emit an electron beam when electricity is passed therethrough; an anode configured to emit an X-ray in response to the incident electron beam; an electrode part configured by at least one pair of electrode members, the electrode members facing each other across a path of the electron beam, a voltage being applied to each of the electrode members; a voltage controller configured to control the voltage applied to the electrode part; and a shield member arranged in contact with the Wehnelt electrode and configured to cover part of the dent by a projecting part.
摘要翻译： X射线管包括：具有凹陷的Wehnelt电极; 布置在Wehnelt电极的凹陷中并构造成当电流通过时发射电子束的灯丝; 配置为响应于入射电子束发射X射线的阳极; 电极部件，由至少一对电极部件构成，所述电极部件跨越所述电子束的路径彼此面对，对每个所述电极部件施加电压; 电压控制器，被配置为控制施加到所述电极部分的电压; 以及屏蔽构件，其布置成与所述Wehnelt电极接触并且构造成通过突出部覆盖所述凹陷的一部分。
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公开(公告)号：US20090060123A1
公开(公告)日：2009-03-05
申请号：US12200240
申请日：2008-08-28
申请人： Tadahiro NAKAYAMA , Kazunobu Nagai , Akiyuki Yokoyama , Isamu Nitta , Masato Nagata , Toyomasa Honda , Hidetoshi Kudo
发明人： Tadahiro NAKAYAMA , Kazunobu Nagai , Akiyuki Yokoyama , Isamu Nitta , Masato Nagata , Toyomasa Honda , Hidetoshi Kudo
CPC分类号： A61B6/56 , A61B6/035 , A61B6/4488 , H05G1/10
摘要： An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.
摘要翻译： 一种X射线CT装置，包括固定部分; 旋转部分，其相对于所述静止部分可旋转; 设置在所述旋转部上用于在物体上照射X射线束的X射线管; X射线检测器，设置在与X射线管相对的旋转部，并检测穿过物体的X射线束; 图像处理器，其基于从所述X射线检测器输出的检测信号生成所述物体的截面图像; 显示器，其基于从图像处理器传送的输出信号显示横截面图像; 第一发送部分由具有分别位于静止和旋转部分的初级和次级绕组的旋转升压变压器构成，并且升高由AC电源提供的AC电压，并且进一步执行非接触式电力传输 该静止部分连接到用于向X射线管供电的旋转部分。
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公开(公告)号：US07826586B2
公开(公告)日：2010-11-02
申请号：US12200240
申请日：2008-08-28
申请人： Tadahiro Nakayama , Kazunobu Nagai , Akiyuki Yokoyama , Isamu Nitta , Masato Nagata , Toyomasa Honda , Hidetoshi Kudo
发明人： Tadahiro Nakayama , Kazunobu Nagai , Akiyuki Yokoyama , Isamu Nitta , Masato Nagata , Toyomasa Honda , Hidetoshi Kudo
CPC分类号： A61B6/56 , A61B6/035 , A61B6/4488 , H05G1/10
摘要： An X-ray CT device including a stationary part; a rotary part rotatable relative to the stationary part; an X-ray tube provided at the rotary part for radiating X-ray beams on an object; an X-ray detector provided at the rotary part opposing the X-ray tube, and that detects the X-ray beams passed through the object; an image processor that generates cross-sectional images of the object based on a detection signal outputted from the X-ray detector; a display that shows the cross-sectional images based on output signals delivered from the image processor; a first transmitting section configured by a rotary step-up transformer having a primary and secondary windings residing at the stationary and the rotary part respectively, and that steps up AC voltage provided by AC power source, and that further executes non-contact power transmission from the stationary part to the rotary part for supplying power to the X-ray tube.
摘要翻译： 一种X射线CT装置，包括固定部分; 旋转部分，其相对于所述静止部分可旋转; 设置在所述旋转部上用于在物体上照射X射线束的X射线管; X射线检测器，设置在与X射线管相对的旋转部，并检测穿过物体的X射线束; 图像处理器，其基于从所述X射线检测器输出的检测信号生成所述物体的截面图像; 显示器，其基于从图像处理器传送的输出信号显示横截面图像; 第一发送部分由具有分别位于静止和旋转部分的初级和次级绕组的旋转升压变压器构成，并且升高由AC电源提供的AC电压，并且进一步执行非接触式电力传输 该静止部分连接到用于向X射线管供电的旋转部分。
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公开(公告)号：US06449337B1
公开(公告)日：2002-09-10
申请号：US09654051
申请日：2000-09-01
申请人： Toyomasa Honda , Wataru Taguchi
发明人： Toyomasa Honda , Wataru Taguchi
IPC分类号： H05G154
CPC分类号： H05G1/54 , A61B6/586 , Y10S378/901
摘要： An X-ray computed tomography apparatus includes an X-ray tube configured to emit X-rays, an X-ray detector configured to detect X-rays passing through a subject in order to acquire projection data, a processor configured to reconstruct tomographic image data on the basis of the projection data, and an interlock unit configured to monitor generation of an arc in the X-ray tube. When an arc in the X-ray tube is detected, the interlock unit stops emitting X-ray emission from the X-ray tube. When a predetermined period of time elapse from the stop of X-ray emission, the interlock unit restarts X-ray emission from the X-ray tube.
摘要翻译： X射线计算机断层摄影装置包括被配置为发射X射线的X射线管，被配置为检测穿过被摄体的X射线以获取投影数据的X射线检测器，被配置为重建断层图像数据的处理器 基于投影数据，以及联锁单元，被配置为监视X射线管中的电弧的产生。 当检测到X射线管中的电弧时，互锁单元停止从X射线管发射X射线。 当从X射线发射停止经过预定时间段时，互锁单元从X射线管重新开始X射线发射。
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公开(公告)号：US08184768B2
公开(公告)日：2012-05-22
申请号：US12841464
申请日：2010-07-22
IPC分类号： A61B6/00
摘要： This embodiment is provided with a detector configured to detect an X-ray radiated from an X-ray tube, a reconstructing part configured to reconstruct an image from projection data based on the detection by the detector, an acquiring part configured to acquire a parameter indicating the status of a scan, a determining part configured to determine whether the parameter acquired by the acquiring part during the scan is included within a reference range, and a controller configured to change the size of a focal point of an electron beam to a different size depending on the determination result during the scan with reference to the result of the determination by the determining part.
摘要翻译： 该实施例具备检测器，其被配置为检测从X射线管辐射的X射线，重建部件，被配置为基于检测器的检测从投影数据重建图像;获取部件，被配置为获取指示 扫描的状态，被配置为确定在扫描期间由获取部分获取的参数是否包括在参考范围内的确定部分，以及被配置为将电子束的焦点尺寸改变为不同大小的控制器 取决于扫描期间的确定结果，参考确定部分的确定结果。
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