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1.发明授权Rotating housing and anode/stationary cathode x-ray tube with magnetic susceptor for holding the cathode stationary 失效旋转外壳和阳极/固定阴极X射线管，带有用于固定阴极的磁感受器
公开(公告)号：US5274690A
公开(公告)日：1993-12-28
申请号：US988403
申请日：1992-12-09
IPC分类号： H01J35/06 , H01J35/02 , H01J35/10 , H01J35/16 , H01J35/24 , H01J35/26 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66
CPC分类号： H01J35/06 , H01J35/02 , H01J35/10 , H01J35/165 , H01J35/24 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66 , H01J2235/162
摘要： An x-ray tube includes an anode (A) and envelope (C) which are rotated (D) at a relatively high rate of speed. A cathode assembly (B) is supported in the envelope on a bearing (32). In order to hold the cathode assembly stationary, a magnetic susceptor (40) having periodic projections (44) is disposed with the projections closely adjacent an outer peripheral wall (20) of the envelope. A plurality of permanent magnets (52) are mounted on a stationary keeper (50), each magnet adjacent one of the susceptor projections. Preferably, the magnets have alternating polarity such that magnetic flux lines (54) flow between adjacent magnets through the magnetic susceptor.
摘要翻译： X射线管包括以相对高的速度旋转（D）的阳极（A）和外壳（C）。 阴极组件（B）被支撑在轴承（32）上的外壳中。 为了将阴极组件固定固定，具有周期性突起（44）的磁感受体（40）被布置成使得突出部紧密靠近外壳的外周壁（20）。 多个永磁体（52）安装在固定保持器（50）上，每个磁体邻近基座突起之一。 优选地，磁体具有交替的极性，使得磁通线（54）通过磁感受器在相邻的磁体之间流动。
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公开(公告)号：US5291538A
公开(公告)日：1994-03-01
申请号：US72400
申请日：1993-06-03
摘要： An evacuated envelope (C) which is connected with an anode (A), has a cathode assembly (B) rotatably mounted inside. Magnets (44, 46) hold the cathode assembly stationary as the anode and envelope rotate. A ferrite core transformer (60) includes a ferrite core primary (66) stationarily mounted exterior to the envelope. A secondary (64) is mounted to the cathode assembly interior to the envelope. The secondary winding includes a ferrite core (70), a portion of which is surrounded by a ceramic, dielectric bobbin (76). The bobbin includes walls or ridges (78) which define a spiral groove (80) therearound in which an uninsulated electric wire (82) is received. The uninsulated electric wire is connected with a cathode filament (52). The primary winding has a ferrite core (90) that has about five times the cross section as the secondary ferrite core to compensate for a low, about 20%, coupling efficiency between the primary and secondary windings. Preferably, the primary winding core tapers (94) adjacent its pole faces to focus magnetic flux toward pole faces (72, 74) of the secondary ferrite core.
摘要翻译： 与阳极（A）连接的真空外壳（C）具有可旋转地安装在内部的阴极组件（B）。 当阳极和外壳旋转时，磁体（44,46）将阴极组件固定住。 铁氧体磁芯变压器（60）包括固定在信封外部的铁氧体磁芯初级（66）。 次级（64）安装到阴极组件内部的信封。 次级绕组包括铁氧体磁芯（70），其一部分被陶瓷介质绕组（76）包围。 线轴包括限定在其周围的螺旋槽（80）的壁或脊（78），其中接收未绝缘的电线（82）。 非绝缘电线与阴极灯丝（52）连接。 初级绕组具有铁氧体磁芯（90），其具有作为次级铁氧体磁心的约5倍的横截面以补偿初级和次级绕组之间的低约20％的耦合效率。 优选地，初级绕组芯在其极面附近逐渐变细（94），以将磁通聚焦到次级铁氧体磁芯的极面（72,74）。
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公开(公告)号：US5241577A
公开(公告)日：1993-08-31
申请号：US817294
申请日：1992-01-06
申请人： James E. Burke , Salvatore G. Perno
发明人： James E. Burke , Salvatore G. Perno
CPC分类号： H01J35/24 , H01J35/165 , H05G1/08 , H05G1/66 , H01J2235/162
摘要： An anode (A) closes one end of an evacuated envelope (C) and a cathode end plate (22) closes the other. A cathode assembly (B) is mounted on a bearing (40) in the evacuated envelope such that the envelope and cathode can undergo relative rotation. A motor (38) rotates the anode and envelope while a pair of magnets (44, 46) hold the cathode assembly stationary. Bearing (40) functions as a current path from a current source (72) to the primary windings of a transformer (58). Another bearing (94) provides a return current path from the transformer to the current source. The secondary windings of the transformer are connected with a cathode filament (52). The transformer enables a relatively low ampere current to pass through the bearings to limit cathodic damage to the bearings, yet provides sufficient amperage to the filament to cause thermionic emission. The bearings provide a direct transfer of current which does not degrade the vacuum in the envelope in such a manner that the current through the cathode filament can be measured directly from outside the envelope.
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公开(公告)号：US4799248A
公开(公告)日：1989-01-17
申请号：US82427
申请日：1987-08-06
CPC分类号： H05G1/06 , H01J35/06 , H05G1/52 , H01J2235/068
摘要： An X-ray tube having two individually energizable cathode filaments. If a primary filament is shorted to a cathode cup, a switch mounted inside the tube housing is thrown to couple a second filament to a filament energization signal. This avoids the necessity in replacing the X-ray tube if the primary filament is shorted and lengthens the effective life of the X-ray tube.
摘要翻译： 具有两个可单独激活的阴极细丝的X射线管。 如果初级灯丝短接到阴极杯，则安装在管外壳内的开关被投掷以将第二灯丝耦合到灯丝通电信号。 这避免了如果原丝被短路并且延长了X射线管的有效寿命，则更换X射线管的必要性。
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公开(公告)号：US5438605A
公开(公告)日：1995-08-01
申请号：US163148
申请日：1993-12-06
申请人： James E. Burke , Lester Miller
发明人： James E. Burke , Lester Miller
IPC分类号： H05G1/00 , A61B6/00 , A61B6/03 , A61N5/01 , H01J35/02 , H01J35/06 , H01J35/10 , H01J35/16 , H01J35/24 , H05G1/02 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/26 , H05G1/34 , H05G1/52 , H05G1/60 , H05G1/66 , H01J35/04
CPC分类号： H05G1/66 , A61N5/01 , H01J35/02 , H01J35/06 , H01J35/10 , H01J35/165 , H01J35/24 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/26 , H05G1/34 , H05G1/52 , H05G1/60 , A61B6/032 , A61B6/4028 , A61B6/4488 , A61B6/56 , H01J2235/162 , H01J2235/205 , H05G1/025
摘要： A toroidal x-ray tube housing (A) is composed of multiple sections which are clamped together and sealed by elastomeric gaskets (128). An annular anode (B) is mounted to the housing with coolant passages (12, 14) extending thereadjacent. A rotor (30) is rotated within the toroidal housing by a motor (60). At least one cathode assembly (C) is mounted to the rotor adjacent the anode. The rotor is supported by magnetic bearings (40) whose active coils are separated from the vacuum region by a magnetic window (48). Alternately, a series of vanes (136, 138) are provided to divide the vacuum chamber into a high vacuum region (132) adjacent the cathode and anode and a low vacuum region (134) adjacent the motor (60) and bearings (40, 150, 152) for rotatably supporting the rotor within the housing. An active vacuum pump, preferably a ion pump (112) and a getter (114) are hermetically sealed into the vacuum region for maintaining the vacuum.
摘要翻译： 环形X射线管外壳（A）由夹紧在一起并由弹性垫片（128）密封的多个部分组成。 环形阳极（B）安装到壳体上，在其周围延伸有冷却剂通道（12,14）。 转子（30）通过马达（60）在环形壳体内旋转。 至少一个阴极组件（C）安装在靠近阳极的转子上。 转子由磁性轴承（40）支撑，其有源线圈通过磁性窗口（48）与真空区域分离。 或者，提供一系列叶片（136,138）以将真空室分成与阴极和阳极相邻的高真空区域（132）和邻近马达（60）的低真空区域（134）和轴承（40， 150,152），用于将所述转子可旋转地支撑在所述壳体内。 活性真空泵，优选离子泵（112）和吸气剂（114）气密地密封到真空区域中以保持真空。
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6.发明授权Focal spot motion control for rotating housing and anode/stationary cathode X-ray tubes 失效用于旋转外壳和阳极/固定阴极X射线管的焦点运动控制
公开(公告)号：US5581591A
公开(公告)日：1996-12-03
申请号：US345921
申请日：1994-11-28
IPC分类号： H05G1/02 , H01J35/02 , H01J35/06 , H01J35/10 , H01J35/14 , H01J35/16 , H01J35/24 , H01J35/26 , H05G1/04 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66 , H01J35/04
CPC分类号： H01J35/02 , H01J35/06 , H01J35/10 , H01J35/14 , H01J35/165 , H01J35/24 , H01J35/26 , H05G1/04 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66 , H01J2235/10 , H01J2235/162 , H05G1/025
摘要： An x-ray tube includes an anode (A) and an envelope (C). A cathode assembly (B) which is supported in the envelope on a bearing (32) emits a beam of electrons which strike the anode forming a focal spot. The anode rotates (D) relative to the cathode such that focal spot follows a generally annular path along a beveled track (14). If the axis of the anode and the cathode assembly are screwed or offset, the focal spot path is not circular and wobbles. An adjustment assembly (60) adjusts the relative positions of the anode, the cathode and the envelope to adjust the anode and cathode assembly axes. The adjustment assembly also includes one or more electrodes (102, 108) which adjust the position of the focal spot. An angular position encoder (106) identifies an angular orientation of the anode. A control circuit (110) applies an electrostatic potential to the electrodes to move the focal spot such that it stays on a constant plane of the leveled anode surface.
摘要翻译： X射线管包括阳极（A）和外壳（C）。 支撑在轴承（32）上的外壳中的阴极组件（B）发射撞击阳极的电子束，形成焦点。 阳极相对于阴极旋转（D），使得焦斑沿着斜面轨道（14）沿着大致环形路径。 如果阳极和阴极组件的轴线被拧紧或偏移，则焦点路径不是圆形并且摆动。 调节组件（60）调节阳极，阴极和外壳的相对位置以调节阳极和阴极组件的轴线。 调整组件还包括一个或多个调整焦点位置的电极（102,108）。 角位置编码器（106）识别阳极的角度取向。 控制电路（110）向电极施加静电电位以使焦点移动，使其保持在平整的阳极表面的恒定平面上。
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7.发明授权Computerized tomographic scanner having a toroidal x-ray tube with a stationary annular anode and a rotating cathode assembly 失效具有环形X射线管的静电环形阳极和旋转阴极组件的计算机断层扫描仪
公开(公告)号：US5305363A
公开(公告)日：1994-04-19
申请号：US863182
申请日：1992-04-03
IPC分类号： A61B6/00 , A61B6/03 , H01J35/02 , H01J35/06 , H01J35/10 , H01J35/16 , H01J35/24 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/26 , H05G1/34 , H05G1/52 , H05G1/60 , H05G1/66
CPC分类号： A61B6/035 , A61B6/032 , A61B6/4028 , A61B6/405 , A61B6/4275 , A61B6/4488 , A61B6/482 , A61B6/56 , H01J35/02 , H01J35/06 , H01J35/10 , H01J35/165 , H01J35/24 , H05G1/06 , H05G1/08 , H05G1/20 , H05G1/26 , H05G1/34 , H05G1/52 , H05G1/60 , H05G1/66 , H01J2235/162 , H05G1/025
摘要： A toroidal x-ray tube (I) is supported (II) for rotation about a horizontal axis (170), translation along a vertical axis (172), and translation along a horizontal axis (174). The x-ray tube includes a toroidal housing (A), an annular anode (B), and a cathode (0) which rotates a beam of electrons around the annular anode. A plurality of parallel connected voltage sources (90.sub.1, 90.sub.2, . . . , 90.sub.n) provide a sufficiently high bias voltage between the electron source and the anode that x-rays are generated. The x-ray beam passes through a compensator crystal (62), an annular window (20), a collimator (132), through a subject received in a central bore (26) of the x-ray tube, and impacts an arc segment of radiation detectors (130). The x-ray detectors are stationarily mounted outside of the plane of the annular window (FIGS. 2 and 7), nutate into the plane of the windows opposite of the origin of the x-ray beam (FIG. 6 ), rotate in part (FIG. 9 ) or rotate in full (FIG. 8 ) Angular position monitors (58, 154) determine the angular position of the cathode assembly, hence the x-ray beam, and the angular position of the detectors in the rotating detector embodiment.
摘要翻译： 环形X射线管（I）被支撑（II），用于围绕水平轴线（170）旋转，沿着垂直轴线（172）平移并且沿着水平轴线（174）平移。 X射线管包括环形壳体（A），环形阳极（B）和使电子束围绕环形阳极旋转的阴极（0）。 多个并联的电压源（901,902，...，90n）在产生x射线的电子源和阳极之间提供足够高的偏置电压。 x射线束穿过受体在X射线管的中心孔（26）中的受试者通过补偿晶体（62），环形窗（20），准直器（132），并且撞击弧段 的辐射探测器（130）。 X射线检测器固定地安装在环形窗的平面外（图2和7），并且朝向与X射线束原点相反的窗口的平面（图6）中，部分旋转 （图9）或完全旋转（图8）角位置监视器（58,154）确定阴极组件的角度位置，因此确定旋转检测器实施例中的X射线束和检测器的角位置 。
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公开(公告)号：US5268955A
公开(公告)日：1993-12-07
申请号：US862805
申请日：1992-04-08
申请人： James E. Burke , Lester Miller
发明人： James E. Burke , Lester Miller
IPC分类号： H01J35/06 , H01J35/16 , H01J35/24 , H01J35/26 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66 , H01J35/04
CPC分类号： H01J35/045 , H01J35/06 , H01J35/165 , H01J35/24 , H05G1/025 , H05G1/08 , H05G1/20 , H05G1/34 , H05G1/52 , H05G1/66 , H01J2235/162
摘要： A toroidal x-ray tube housing (A) has an evacuated interior. An annular anode (B) is connected with the housing closely adjacent the window such that a cooling fluid passage (12) is defined in intimate thermal communication with the anode. A cathode assembly (32) is mounted within the evacuated housing or an annular ring (30) that rotates an electron beam (22) around the large diameter annular anode. In the embodiment of FIGS. 1 and 2, the annular ring is magnetically levitated (40) and rotated by a motor (50). A collimator (62) and filter (64) are rotated with the cathode assembly closely adjacent an electron emitter or cathode cup (32) such that the generated x-rays are collimated and filtered within the x-ray tube. Preferably, a plurality of cathode cups (120) are provided, whose operation is selected by a series of magnetically controlled switches (76). The cathode cup is insulated (106) from the annular ring and isolated by a transformer (104, 112) from the filament current control switches. In the embodiment of FIGS. 4-6, the cathode assembly (C) includes a multiplicity of stationarily mounted electron cups (120) which are selectively actuated to rotate the electrode beam by a switch (130). An electron beam scan control (134) may bias the potential applied to grids (124, 126) to scan the electron beam generated by electron emitter over a commensurate arc length of the anode with the arc length of the emitter. In the embodiment of FIG. 7 , multiple anode surface as well as multiple cathode cups are provided.
摘要翻译： 环形X射线管外壳（A）具有抽真空的内部。 环形阳极（B）与壳体紧邻窗口连接，使得冷却流体通道（12）被定义成与阳极紧密热连通。 阴极组件（32）安装在抽真空壳体内，或环形环（30），其围绕大直径环形阳极旋转电子束（22）。 在图1和图2的实施例中 如图1和图2所示，环形环被磁悬浮（40）并由电动机（50）旋转。 准直器（62）和过滤器（64）随着阴极组件靠近电子发射器或阴极杯（32）而旋转，使得所产生的x射线在x射线管内被准直和过滤。 优选地，提供多个阴极杯（120），其操作由一系列磁控开关（76）选择。 阴极杯与环形环绝缘（106），并与灯丝电流控制开关的变压器（104,112）隔离。 在图1和图2的实施例中 如图4-6所示，阴极组件（C）包括多个固定安装的电子杯（120），其被选择性地致动以通过开关（130）旋转电极束。 电子束扫描控制（134）可以偏置施加到栅极（124,126）上的电位，以扫描由电子发射器产生的与发射极的电弧长度相当的阳极长度的电子束。 在图1的实施例中 如图7所示，提供多个阳极表面以及多个阴极杯。
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公开(公告)号：US08867706B2
公开(公告)日：2014-10-21
申请号：US12942077
申请日：2010-11-09
摘要： An asymmetric x-ray tube. In one example embodiment, an x-ray tube includes an evacuated enclosure, a cathode assembly at least partially positioned within the evacuated enclosure and defining a first axis, and an anode assembly at least partially positioned within the evacuated enclosure and defining a second axis. The anode assembly includes a rotating anode having a focal spot. The focal spot and the second axis define a plane. The first axis is positioned beneath the plane.
摘要翻译： 不对称X射线管。 在一个示例性实施例中，x射线管包括抽真空的外壳，阴极组件至少部分地定位在抽真空的外壳内并限定第一轴线，阳极组件至少部分地定位在抽真空的外壳内并限定第二轴线。 阳极组件包括具有焦斑的旋转阳极。 焦点和第二轴定义一个平面。 第一轴位于平面下方。
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公开(公告)号：US20120114104A1
公开(公告)日：2012-05-10
申请号：US12942077
申请日：2010-11-09
IPC分类号： H01J35/10
摘要： An asymmetric x-ray tube. In one example embodiment, an x-ray tube includes an evacuated enclosure, a cathode assembly at least partially positioned within the evacuated enclosure and defining a first axis, and an anode assembly at least partially positioned within the evacuated enclosure and defining a second axis. The anode assembly includes a rotating anode having a focal spot. The focal spot and the second axis define a plane. The first axis is positioned beneath the plane.
摘要翻译： 不对称X射线管。 在一个示例性实施例中，x射线管包括抽真空的外壳，至少部分地定位在抽真空外壳内并限定第一轴线的阴极组件，以及至少部分地定位在抽真空外壳内并限定第二轴线的阳极组件。 阳极组件包括具有焦斑的旋转阳极。 焦点和第二轴定义一个平面。 第一轴位于平面下方。
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