公开(公告)号：US09867590B2

公开(公告)日：2018-01-16

申请号：US14633690

申请日：2015-02-27

Applicant: Toshiba Medical Systems Corporation

Inventor： Emi Tamura

IPC: A61B6/03 ,  H01J35/10 ,  H01J35/14 ,  H01J35/24 ,  H01J35/30 ,  A61B6/00 ,  G01D18/00

CPC classification number: A61B6/585 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4035 ,  A61B6/4233 ,  A61B6/4241 ,  A61B6/482 ,  G01D18/00 ,  G01D18/002 ,  G01D18/004 ,  G01D18/006 ,  H01J35/10 ,  H01J35/14 ,  H01J35/24 ,  H01J35/30 ,  H01J35/305 ,  H01J2235/081 ,  H01J2235/086

Abstract: According to one embodiment, a photon counting CT apparatus includes an X-ray source, a photon counting CT detector, and a calibration unit. The X-ray source includes a cathode configured to generate electrons and an anode including a plurality of targets configured to generate a plurality of characteristic X-rays having different energies. The photon counting CT detector detects X-ray photons generated by the X-ray source. The calibration unit calibrates the gain of the photon counting CT detector based on the correspondence relationship between the photon energies of the plurality of characteristic X-rays and outputs from the photon counting CT detector.

公开(公告)号：US09659741B2

公开(公告)日：2017-05-23

申请号：US14660607

申请日：2015-03-17

Applicant: VARIAN MEDICAL SYSTEMS, INC.

Inventor： Bradley D. Canfield ,  Colton B. Woodman

IPC: H01J1/304 ,  H01J35/14 ,  H01J35/06 ,  H05G1/10 ,  G06F17/50 ,  H01J9/02 ,  H01J35/30

CPC classification number: H01J35/14 ,  H01J35/06 ,  H01J35/30 ,  H01J35/305 ,  H05G1/10 ,  H05G1/52

Abstract: An electron emitter can include: a plurality of elongate rungs connected together end to end from a first emitter end to a second emitter end in a plane so as to form a planar pattern; a plurality of corners, wherein each elongate rung is connected to another elongate rung through a corner having a corner apex and an opposite corner nadir; a first gap between adjacent non-connected elongate rungs, wherein the first gap extends from the first emitter end to a middle rung; a second gap between adjacent non-connected elongate rungs, wherein the second gap extends from the second emitter end to the middle rung, wherein the first gap does not intersect the second gap; and one or more cutouts at one or more of the corners of the plurality of corners between the corner apex and corner nadir or at the corner nadir.

公开(公告)号：US09437390B2

公开(公告)日：2016-09-06

申请号：US14437491

申请日：2012-10-22

Applicant: SHIMADZU CORPORATION

Inventor： Sadamu Tomita ,  Masaaki Ukita

IPC: H01J35/30 ,  H01J35/14 ,  H01J35/16

CPC classification number: H01J35/14 ,  H01J35/16 ,  H01J35/305 ,  H01J2235/02 ,  H01J2235/16 ,  H01J2235/168

Abstract: An X-ray tube device according to the present invention includes a cathode generating an electron beam, an anode generating an X-ray by collision of the electron beam from the cathode, an envelope internally housing the cathode and the anode, a magnetic field generator including a magnetic pole arranged to be opposed to the envelope, generating a magnetic field for focusing and deflecting the electron beam from the cathode to the anode, and an electric field relaxing electrode arranged between the magnetic pole and the envelope, having an outer surface having a rounded shape. Thus, the magnetic field generator can be placed closer to the envelope while a tip end of the magnetic field generator is suppressed from being a discharge start point, and hence the effect of being capable of downsizing the X-ray tube device is achieved.

Abstract translation: 根据本发明的X射线管装置包括产生电子束的阴极，通过来自阴极的电子束的碰撞产生X射线的阳极，内部容纳阴极和阳极的外壳，磁场发生器 包括设置成与外壳相对的磁极，产生用于使电子束从阴极到阳极聚焦和偏转的磁场，以及布置在磁极和外壳之间的电场弛豫电极，其外表面具有 圆形。 因此，可以将磁场发生器放置得更靠近封套，同时将磁场发生器的前端抑制为放电开始点，从而实现能够使X射线管装置小型化的效果。

公开(公告)号：US20150023472A1

公开(公告)日：2015-01-22

申请号：US14334806

申请日：2014-07-18

Applicant: GE Sensing & Inspection GmbH

Inventor： Andreas Schmitt ,  Farid John Aslami ,  Reinhard Friedemann

IPC: G01N23/02 ,  H01J35/26 ,  H01J35/18 ,  G01B15/00

CPC classification number: G01N23/02 ,  G01B15/00 ,  G01N23/04 ,  G01N2223/308 ,  H01J35/18 ,  H01J35/26 ,  H01J35/305 ,  H05G1/00 ,  H05G1/52

Abstract: An X-ray testing device for generating high-resolution geometric projections of a test object, includes a highly focusing X-ray source having: a rotary anode assembly formed by a rotatably mounted anode plate, an anode plate drive connected to rotate the anode plate and a rotational angle encoder detecting the rotation angle of the anode plate; an electron gun producing a focused electron beam; and an electron beam control unit having an electron beam deflecting unit and a control unit, the electron beam deflecting unit controlling the point of incidence of the electron beam generated by the electron gun on the anode plate. The control unit controlling the electron beam deflecting unit dependent on the detected rotation angle of the anode plate minimizing the positional change of the point of incidence on the anode plate relative to a reference point on a bracket holding the test object located in a fixed position.

Abstract translation: 一种用于产生测试对象的高分辨率几何投影的X射线测试装置，包括高度聚焦的X射线源，其具有：由可旋转地安装的阳极板形成的旋转阳极组件，阳极板驱动器，其将阳极板 以及旋转角度编码器，其检测所述阳极板的旋转角度; 产生聚焦电子束的电子枪; 以及具有电子束偏转单元和控制单元的电子束控制单元，电子束偏转单元控制由电子枪在阳极板上产生的电子束的入射点。 控制单元根据检测到的阳极板的旋转角度来控制电子束偏转单元，使得阳极板上的入射点相对于保持位于固定位置的测试对象的支架上的参考点的位置变化最小化。

公开(公告)号：US20100195799A1

公开(公告)日：2010-08-05

申请号：US12671021

申请日：2007-08-09

Applicant: Sadamu Tomita ,  Shigeki Hayashi

Inventor： Sadamu Tomita ,  Shigeki Hayashi

IPC: H01J35/14 ,  H01J35/10

CPC classification number: H01J35/14 ,  H01J35/16 ,  H01J35/305 ,  H01J2235/1212 ,  H01J2235/1216 ,  H01J2235/162

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100067651A1

公开(公告)日：2010-03-18

申请号：US12324348

申请日：2008-11-26

Applicant: Jiang Hsieh ,  Eugne Lino Saragnese ,  J. Eric Stahre ,  Bijan Dorri ,  James Kaufman ,  Robert Franklin Senzig

Inventor： Jiang Hsieh ,  Eugne Lino Saragnese ,  J. Eric Stahre ,  Bijan Dorri ,  James Kaufman ,  Robert Franklin Senzig

IPC: A61B6/00 ,  H01J35/00

CPC classification number: H01J35/305 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4021 ,  A61B6/4028 ,  A61B6/4085 ,  A61B6/4488 ,  H01J2235/062 ,  H01J2235/068 ,  H01J2235/086

Abstract: Methods and apparatus for x-ray imaging with focal spot deflection are provided. The apparatus includes an x-ray tube having a cathode configured to emit electrons and an anode having a target with a target surface defining a target angle. The emitted electrons are deflected onto the target surface with the target surface substantially aligned with a z-axis parallel to a gantry rotation axis.

Abstract translation: 提供了具有焦点偏转的x射线成像的方法和装置。 该装置包括具有被配置为发射电子的阴极的X射线管和具有限定目标角的目标表面的靶的阳极。 发射的电子被偏转到目标表面上，目标表面基本上与平行于台架旋转轴线的z轴对齐。

公开(公告)号：US07496179B2

公开(公告)日：2009-02-24

申请号：US11752423

申请日：2007-05-23

Applicant: Joerg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Matthias Maier ,  Detlef Mattern ,  Peter Roehrer ,  Peter Schardt

Inventor： Joerg Freudenberger ,  Sven Fritzler ,  Manfred Fuchs ,  Matthias Maier ,  Detlef Mattern ,  Peter Roehrer ,  Peter Schardt

IPC: H01J35/06 ,  H05G1/36 ,  H05G1/46

CPC classification number: H01J35/065 ,  H01J35/305 ,  H01J2235/162

Abstract: An x-ray unit has an x-ray radiator having an anode that emits x-rays upon being struck by electrons, a cathode that thermionically emits electrons upon irradiation thereof by a laser beam, electrical connections for application of a high voltage between the anode and the cathode to accelerate the emitted electrons toward the anode as an electron beam, a vacuum housing that can be rotated around an axis, an insulator that is part of the vacuum housing and that separates the cathode from the anode, a drive that rotates the vacuum housing around its axis, an arrangement for cooling components of the x-ray radiator, and an arrangement that directs the laser beam from a stationary source, arranged outside of the vacuum housing, onto a spatially stationary laser focal spot on the cathode and that focuses the laser beam. The x-ray unit furthermore has a control circuit with which an operating property of the x-ray unit is adjusted and at least one measurement element for measurement of a measurement quantity is effectively correlated with the temperature of the cathode. The control circuit adjusts the operating property dependent on the measurement of the measurement quantity.

Abstract translation: x射线单元具有：x射线辐射体，其具有在被电子撞击时发射x射线的阳极;通过激光束照射电子时发射电子的阴极;用于在阳极之间施加高电压的电连接 以及用于将发射的电子作为电子束加速到阳极的阴极，可以围绕轴线旋转的真空壳体，作为真空壳体的一部分并将阴极与阳极分离的绝缘体，使得阴极与阳极分离的驱动器， 围绕其轴线的真空壳体，用于冷却x射线辐射器的部件的布置，以及将来自设置在真空壳体外部的固定源的激光束引导到阴极上的空间静止的激光焦点上的布置， 聚焦激光束。 X射线单元还具有调整X射线单元的工作特性的控制电路，并且用于测量量的至少一个测量元件与阴极的温度有效地相关。 控制电路根据测量量的测量来调整工作特性。

公开(公告)号：US07382865B2

公开(公告)日：2008-06-03

申请号：US11283431

申请日：2005-11-18

Applicant: Thomas Deutscher ,  Wolfgang Kutschera ,  Matthias Seufert

Inventor： Thomas Deutscher ,  Wolfgang Kutschera ,  Matthias Seufert

IPC: H01J35/10

CPC classification number: H01J35/305 ,  G21F3/00 ,  G21Y2002/301 ,  G21Y2002/302 ,  G21Y2004/30

Abstract: For reducing of the weight of leakage x-ray radiation shielding for a rotary piston x-ray tube that rotates in a cooling medium in a radiator housing of an x-ray radiator, the rotary piston x-ray tube having a rotary anode and a cathode fixedly connected with the vacuum housing thereof, the vacuum housing has at least one first region of a total shielding and the radiator housing has at least a second region of the total shielding. Only the respective regions of the vacuum housing and the radiator housing has that are irradiated by the leakage x-ray radiation are provided with shielding.

Abstract translation: 为了减少在x射线辐射器的散热器壳体中的冷却介质中旋转的旋转活塞x射线管的泄漏x射线辐射屏蔽的重量，旋转活塞x射线管具有旋转阳极和 阴极与其真空壳体固定连接，真空壳体具有至少一个总屏蔽的第一区域，并且散热器壳体具有至少第二区域的总屏蔽。 只有真空壳体和散热器壳体的各个区域都被泄漏的X射线辐射照射的区域设置有屏蔽。

公开(公告)号：US07266179B2

公开(公告)日：2007-09-04

申请号：US11134793

申请日：2005-05-20

Applicant: Josef Deuringer ,  Ronald Dittrich ,  Jörg Freudenberger ,  Peter Schardt ,  Jens Uecker

Inventor： Josef Deuringer ,  Ronald Dittrich ,  Jörg Freudenberger ,  Peter Schardt ,  Jens Uecker

IPC: H01J35/30 ,  H01J35/14

CPC classification number: H01J35/305 ,  H01J35/14 ,  H05G1/52

Abstract: An x-ray radiator with an anode accommodated in a housing such that it can rotate around an axis has a device for determination of the position of an x-ray-emitting focal spot on the anode. To increase the measurement precision, the device includes a collimator aligned on the focal spot.

Abstract translation: 具有容纳在壳体中的阳极使得其可以围绕轴线旋转的x射线辐射器具有用于确定阳极上的x射线发射焦斑的位置的装置。 为了提高测量精度，该装置包括在焦点上对准的准直仪。

公开(公告)号：US07197119B2

公开(公告)日：2007-03-27

申请号：US11041170

申请日：2005-01-20

Applicant: Jörg Freudenberger ,  Peter Röhrer ,  Peter Schardt

Inventor： Jörg Freudenberger ,  Peter Röhrer ,  Peter Schardt

IPC: H01J35/10

CPC classification number: H01J35/305 ,  H01J35/105 ,  H01J2235/1291

Abstract: A high-performance anode plate for a directly cooled rotary piston x-ray tube is formed of a high-temperature-resistant material such as tungsten, molybdenum or a combination of both materials. In the region of the focal spot path, the underside of the anode plate is shaped, and/or in this region a different highly heat-conductive material is inserted or applied, such that an improved heat dissipation and thus a lower temperature gradient results.

Abstract translation: 用于直接冷却的旋转活塞x射线管的高性能阳极板由诸如钨，钼或两种材料的组合的耐高温材料形成。 在焦点路径的区域中，阳极板的下侧成形，和/或在该区域插入或施加不同的高导热材料，从而导致改善的散热并因此导致较低的温度梯度。