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公开(公告)号：US07340036B2
公开(公告)日：2008-03-04
申请号：US11812852
申请日：2007-06-22
申请人： Sadamu Tomita , Tomomi Tamura , Hidenobu Ishida
发明人： Sadamu Tomita , Tomomi Tamura , Hidenobu Ishida
IPC分类号： H01J35/08
CPC分类号： H01J35/14 , H01J35/08 , H01J2235/086 , H01J2235/1006
摘要： An X-ray generator includes an electron source generating an electron beam, a target generating an X-ray by a collision of the electron beam and extending in a direction orthogonal to the electron beam, and a cylindrical electrode covering a collision portion of the target to which the electron beam collides and having a bore allowing the electron beam to pass through. The electron source and the target are arranged in such a way that the X-ray is radiated in the direction orthogonal to an optical axis of the electron beam. A depression equivalent to a notch of the target is provided in a collision face side of the electron beam on the target and also in a reverse location of a tip of the target located on an outgoing radiation side of the X-ray relative to a collision location of the electron beam on the target.
摘要翻译： X射线发生器包括产生电子束的电子源，通过电子束的碰撞产生X射线并沿与电子束正交的方向延伸的靶的靶，以及覆盖靶的碰撞部的圆筒状电极 电子束碰撞并具有允许电子束通过的孔。 电子源和靶以这样的方式排列，使得X射线在与电子束的光轴正交的方向上被辐射。 相当于目标的凹口的凹陷被提供在目标上的电子束的碰撞面侧以及位于X射线的出射辐射侧的靶的尖端相对于碰撞的相反位置 电子束在靶上的位置。
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公开(公告)号：US5755227A
公开(公告)日：1998-05-26
申请号：US739463
申请日：1996-10-29
CPC分类号： A61B5/04008
摘要： A method and apparatus for deducing physical quantities such as positions, sizes and orientations of bioelectric current sources. Minute magnetic fields formed by the bioelectric current sources in a region under examination of an examinee are measured with a plurality of magnetic sensors arranged adjacent the region under examination. A plurality of lattice points are set in the region under examination. Physical quantities of the current sources are derived by solving a relational expression of unknown current sources at the lattice points and field data provided by the magnetic sensors, with a condition added thereto to minimize a norm of a vector having the current source at each of the lattice points. The lattice points are moved toward a lattice point having a large current value among the current sources computed. Checking is made whether a minimum distance among the lattice points having been moved is below a predetermined value. The current source computing step to the checking step are repeated for the lattice points having been removed, when the minimum distance exceeds the predetermined value, and the current source corresponding to a magnetic field occurring when the minimum distance is determined to be below the predetermined value is identified to be a true current source.
摘要翻译： 用于推导物理量的方法和装置，例如生物电流源的位置，大小和取向。 在被检查的区域内由生物电流源形成的分钟磁场用与被检查区域相邻排列的多个磁性传感器进行测量。 在被检查的区域中设置多个格点。 电流源的物理量是通过求解由磁传感器提供的格点和场数据的未知电流源的关系表达式而得到的，其中添加有条件以最小化具有当前源的矢量的范数 格点 在所计算的电流源中，格点移动到具有大电流值的格点。 检查已经移动的格点之间的最小距离是否低于预定值。 当最小距离超过预定值时，对于已经去除的格点重复检查步骤的当前源计算步骤，并且对应于当确定最小距离低于预定值时发生的磁场的电流源 被确定为真正的当前来源。
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公开(公告)号：US5601081A
公开(公告)日：1997-02-11
申请号：US252788
申请日：1994-06-02
CPC分类号： A61B5/04008
摘要： A method and apparatus for deducing physical quantities such as positions, sizes and orientations of bioelectric current sources. Minute magnetic fields formed by the bioelectric current sources in a region under examination of an examinee are measured with a plurality of magnetic sensors arranged adjacent the region under examination. A plurality of lattice points are set in the region under examination. Physical quantities of the current sources are derived by solving a relational expression of unknown current sources at the lattice points and field data provided by the magnetic sensors, with a condition added thereto to minimize a norm of a vector having the current source at each of the lattice points. The lattice points are moved toward a lattice point having a large current value among the current sources computed. Checking is made whether a minimum distance among the lattice points having been moved is below a predetermined value. The current source computing step to the checking step are repeated for the lattice points having been removed, when the minimum distance exceeds the predetermined value, and the current source corresponding to a magnetic field occurring when the minimum distance is determined to be below the predetermined value is identified to be a true current source.
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公开(公告)号：US20100195799A1
公开(公告)日：2010-08-05
申请号：US12671021
申请日：2007-08-09
申请人： Sadamu Tomita , Shigeki Hayashi
发明人： Sadamu Tomita , Shigeki Hayashi
CPC分类号： H01J35/14 , H01J35/16 , H01J35/305 , H01J2235/1212 , H01J2235/1216 , H01J2235/162
摘要： Conventionally, the magnetic field generator was arranged perpendicularly to the axis of the electron beam. The magnetic field generator of this invention is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam. Specifically, the magnetic field generator is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam within the range in the cathode side from the focused and deflected electron beam. Inclination up to the anode side opposite to the cathode side will lead to a possibility of increasing the reduced X-ray source diameter. Thus, arranging the magnetic field generator so as to be inclined within the range in the cathode side from the electron beam may reduce the X-ray source diameter.
摘要翻译： 通常，磁场发生器垂直于电子束的轴线布置。 本发明的磁场发生器被布置成相对于垂直于电子束轴的平面倾斜。 具体地说，磁场发生器被布置为相对于垂直于电子束轴线的平面在从聚焦偏转电子束的阴极侧范围内倾斜。 直到与阴极侧相反的阳极侧的倾斜将导致增加X射线源直径减小的可能性。 因此，将磁场发生器设置成在电子束的阴极侧的范围内倾斜，可能降低X射线源直径。
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公开(公告)号：US06374131B1
公开(公告)日：2002-04-16
申请号：US09362570
申请日：1999-07-28
申请人： Sadamu Tomita , Keisuke Toyama
发明人： Sadamu Tomita , Keisuke Toyama
IPC分类号： A61B505
CPC分类号： A61B5/04008
摘要： A technique for accurately determining states of bioelectric currents occurring in particular positions in a site of interest of a patient. Transfer functions between the particular positions and each magnetic sensor are derived from a positional relationship between the site of interest and each magnetic sensor. Weight coefficients are computed from an inverse matrix obtained by adding a predetermined value to a matrix of the transfer functions, and virtual biomagnetism information obtained virtually by bioelectric currents set to the particular positions. Enhanced biomagnetism information with only the biomagnetism from the particular positions enhanced is acquired by superposing the weight coefficients of measured biomagnetism information. Based on this enhanced biomagnetism information, states of bioelectric currents occurring in the particular positions are determined accurately.
摘要翻译： 用于精确地确定在患者感兴趣的部位的特定位置中发生的生物电流的状态的技术。 在特定位置和每个磁性传感器之间的传递函数是从感兴趣部位和每个磁性传感器之间的位置关系导出的。 从通过将预定值加到传递函数的矩阵而获得的逆矩阵以及通过设置到特定位置的生物电流实际获得的虚拟生物磁信息来计算权重系数。 通过叠加测量的生物磁信息的权重系数来获得仅具有增强特定位置的生物磁性的增强的生物磁化信息。 基于这种增强的生物磁化信息，精确地确定在特定位置中发生的生物电流的状态。
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公开(公告)号：US08213576B2
公开(公告)日：2012-07-03
申请号：US12671021
申请日：2007-08-09
申请人： Sadamu Tomita , Shigeki Hayashi
发明人： Sadamu Tomita , Shigeki Hayashi
IPC分类号： H01J35/30
CPC分类号： H01J35/14 , H01J35/16 , H01J35/305 , H01J2235/1212 , H01J2235/1216 , H01J2235/162
摘要： Conventionally, the magnetic field generator was arranged perpendicularly to the axis of the electron beam. The magnetic field generator of this invention is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam. Specifically, the magnetic field generator is arranged so as to be inclined relative to the plane perpendicular to the axis of the electron beam within the range in the cathode side from the focused and deflected electron beam. Inclination up to the anode side opposite to the cathode side will lead to a possibility of increasing the reduced X-ray source diameter. Thus, arranging the magnetic field generator so as to be inclined within the range in the cathode side from the electron beam may reduce the X-ray source diameter.
摘要翻译： 通常，磁场发生器垂直于电子束的轴线布置。 本发明的磁场发生器被布置成相对于垂直于电子束轴的平面倾斜。 具体地说，磁场发生器被布置为相对于垂直于电子束轴线的平面在从聚焦偏转电子束的阴极侧范围内倾斜。 直到与阴极侧相反的阳极侧的倾斜将导致增加X射线源直径减小的可能性。 因此，将磁场发生器设置成在电子束的阴极侧的范围内倾斜，可能降低X射线源直径。
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公开(公告)号：US20070258565A1
公开(公告)日：2007-11-08
申请号：US11812852
申请日：2007-06-22
申请人： Sadamu Tomita , Tomomi Tamura , Hidenobu Ishida
发明人： Sadamu Tomita , Tomomi Tamura , Hidenobu Ishida
IPC分类号： H01J35/14
CPC分类号： H01J35/14 , H01J35/08 , H01J2235/086 , H01J2235/1006
摘要： An X-ray generator includes an electron source generating an electron beam, a target generating an X-ray by a collision of the electron beam and extending in a direction orthogonal to the electron beam, and a cylindrical electrode covering a collision portion of the target to which the electron beam collides and having a bore allowing the electron beam to pass through. The electron source and the target are arranged in such a way that the X-ray is radiated in the direction orthogonal to an optical axis of the electron beam. A depression equivalent to a notch of the target is provided in a collision face side of the electron beam on the target and also in a reverse location of a tip of the target located on an outgoing radiation side of the X-ray relative to a collision location of the electron beam on the target.
摘要翻译： X射线发生器包括产生电子束的电子源，通过电子束的碰撞产生X射线并沿与电子束正交的方向延伸的靶的靶，以及覆盖靶的碰撞部的圆筒状电极 电子束碰撞并具有允许电子束通过的孔。 电子源和靶以这样的方式排列，使得X射线在与电子束的光轴正交的方向上被辐射。 相当于目标的凹口的凹陷被提供在目标上的电子束的碰撞面侧以及位于X射线的出射辐射侧的靶的尖端相对于碰撞的相反位置 电子束在靶上的位置。
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公开(公告)号：US5682889A
公开(公告)日：1997-11-04
申请号：US739461
申请日：1996-10-29
CPC分类号： A61B5/04008
摘要： A method and apparatus for deducing physical quantities such as positions, sizes and orientations of bioelectric current sources. Minute magnetic fields formed by the bioelectric current sources in a region under examination of an examinee are measured with a plurality of magnetic sensors arranged adjacent the region under examination. A plurality of lattice points are set in the region under examination. Physical quantities of the current sources are derived by solving a relational expression of unknown current sources at the lattice points and field data provided by the magnetic sensors, with a condition added thereto to minimize a norm of a vector having the current source at each of the lattice points. The lattice points are moved toward a lattice point having a large current value among the current sources computed. Checking is made whether a minimum distance among the lattice points having been moved is below a predetermined value. The current source computing step to the checking step are repeated for the lattice points having been removed, when the minimum distance exceeds the predetermined value, and the current source corresponding to a magnetic field occurring when the minimum distance is determined to be below the predetermined value is identified to be a true current source.
摘要翻译： 用于推导物理量的方法和装置，例如生物电流源的位置，大小和取向。 在被检查的区域内由生物电流源形成的分钟磁场用与被检查区域相邻排列的多个磁性传感器进行测量。 在被检查的区域中设置多个格点。 电流源的物理量是通过求解由磁传感器提供的格点和场数据的未知电流源的关系表达式而得到的，其中添加有条件以最小化具有当前源的矢量的范数 格点 在所计算的电流源中，格点移动到具有大电流值的格点。 检查已经移动的格点之间的最小距离是否低于预定值。 当最小距离超过预定值时，对于已经去除的格点重复检查步骤的当前源计算步骤，并且对应于当确定最小距离低于预定值时发生的磁场的电流源 被确定为真正的当前来源。
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公开(公告)号：US5671740A
公开(公告)日：1997-09-30
申请号：US739452
申请日：1996-10-29
CPC分类号： A61B5/04008
摘要： A method and apparatus for deducing physical quantities such as positions, sizes and orientations of bioelectric current sources. Minute magnetic fields formed by the bioelectric current sources in a region under examination of an examinee are measured with a plurality of magnetic sensors arranged adjacent the region under examination. A plurality of lattice points are set in the region under examination. Physical quantities of the current sources are derived by solving a relational expression of unknown current sources at the lattice points and field data provided by the magnetic sensors, with a condition added thereto to minimize a norm of a vector having the current source at each of the lattice points. The lattice points are moved toward a lattice point having a large current value among the current sources computed. Checking is made whether a minimum distance among the lattice points having been moved is below a predetermimed value. The current source computing step to the checking step are repeated for the lattice points having been removed, when the minimum distance exceeds the predetermined value, and the current source corresponding to a magnetic field occurring when the minimum distance is determined to be below the predetermined value is identified to be a true current source.
摘要翻译： 用于推导物理量的方法和装置，例如生物电流源的位置，大小和取向。 在被检查的区域内由生物电流源形成的分钟磁场用与被检查区域相邻排列的多个磁性传感器进行测量。 在被检查的区域中设置多个格点。 电流源的物理量是通过求解由磁传感器提供的格点和场数据的未知电流源的关系表达式而得到的，其中添加有条件以最小化具有当前源的矢量的范数 格点 在所计算的电流源中，格点移动到具有大电流值的格点。 检查已移动的格点之间的最小距离是否低于预先设定的值。 当最小距离超过预定值时，对于已经去除的格点重复检查步骤的当前源计算步骤，并且对应于当确定最小距离低于预定值时发生的磁场的电流源 被确定为真正的当前来源。
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