公开(公告)号：US11043351B2

公开(公告)日：2021-06-22

申请号：US16621402

申请日：2018-06-14

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling ,  Tobias Schlenk ,  Thorben Repenning

IPC: H01J35/06 ,  H01J35/10

Abstract: An X-ray source (10) for generating X-rays (11) is provided. The X-ray source (10) comprises an emitter arrangement (12) for generating electrons or for generating X-rays, at least one feedthrough (38) for supplying electrical power to the emitter arrangement (12), and an insulator (20) configured for isolating an electrical potential of the at least one feedthrough (38) from a ground potential. Therein, the at least one feedthrough (38) extends at least partly through the insulator (20), and at least a part of the insulator (20) is in thermal contact with at least a part of the emitter arrangement (12). Further, the insulator (20) comprises at least one cooling channel (28) formed completely in an interior volume (25) of the insulator (20) and configured to dissipate heat from the emitter arrangement (12), wherein a distance (29) between an outer surface (26) of the insulator (20) and the cooling channel (28) is at least as large as half of a thickness (27) of the cooling channel (20).

公开(公告)号：US10791615B2

公开(公告)日：2020-09-29

申请号：US16086440

申请日：2017-03-21

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Lester Donald Miller ,  Nirmal Soni ,  Rolf Karl Otto Behling ,  Roland Proksa ,  Dionys Van De Ven

IPC: H05G1/32 ,  H05G1/58 ,  H01J35/06 ,  H01J35/10 ,  H01J35/04 ,  G01V5/00 ,  H05G1/10

Abstract: The present invention relates to an apparatus for generating X-rays. It is described to produce (210) with a power supply (40) at least two voltages between at least one cathode (20) and an anode (30), wherein the at least two voltages comprises a first voltage and a second voltage. The at least one cathode is positioned relative to the anode. Electrons are emitted (220) from the at least one cathode. Electrons emitted from the at least one cathode are interacted (230) with the anode with energies corresponding to the at least two voltages. X-rays are generated (230) from the anode, wherein the electrons interact with the anode to generate the X-rays. First X-rays are generated when the power supply produces the first voltage and second X-rays are generated when the power supply produces the second voltage. The power supply is controlled (250), such that a ratio between the first X-rays and the second X-rays is controllable.

公开(公告)号：US09412554B2

公开(公告)日：2016-08-09

申请号：US14905874

申请日：2014-07-22

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling

IPC: G03H5/00 ,  H01J35/10 ,  G21K1/02

CPC classification number: H01J35/10 ,  G21K1/02 ,  G21K2207/005 ,  H01J2235/086

Abstract: An Anode for an X-ray tube, comprising an anode disk comprising a circular focal track region being adapted to, upon impact of accelerated electrons, emit X-rays in an emission direction transverse to an impacting direction of the electrons; a ring-like modulating absorption grid; wherein the modulating absorption grid encloses the focal track region; wherein the modulating absorption grid comprises wall portions of X-ray absorbing material, the wall portions being arranged such as to absorb X-rays emitted from the focal track region in the emission direction; wherein the modulating absorption grid comprises slits between neighboring wall portions, the slits being arranged along a circumferential direction of the modulating absorption grid at spacings (s) of less than 100 μm and the slits having a width (ws) in the circumferential direction of less than 50 μm.

Abstract translation: 一种用于X射线管的阳极，包括阳极盘，该阳极盘包括圆形焦点轨道区域，其适于在加速电子冲击时沿与电子的撞击方向相反的发射方向发射X射线; 环状调节吸收网格; 其中所述调制吸收栅格包围所述焦点轨迹区域; 其中所述调制吸收栅格包括X射线吸收材料的壁部分，所述壁部被布置成吸收从所述焦点轨迹区域在所述发射方向发射的X射线; 其中所述调制吸收栅格包括相邻壁部分之间的狭缝，所述狭缝沿着所述调制吸收栅格的圆周方向以小于100μm的间隔布置，并且所述狭缝在圆周方向上的宽度（w s）较小 超过50μm。

公开(公告)号：US11469071B2

公开(公告)日：2022-10-11

申请号：US16770979

申请日：2018-12-11

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling ,  Christoph Helmut Bathe ,  Wolfgang Chrost

IPC: H01J35/10

Abstract: The rotatable anode of a rotating anode X-ray source has demanding requirements placed upon it. For example, it may rotate at a frequency as high as 200 Hz. X-ray emission is stimulated by applying a large voltage to the cathode, causing electrons to collide with the focal track. The focal spot generated at the electron impact position may have a peak temperature between 2000° C. and 3000° C. The constant rotation of the rotating anode protects the focal track to some extent, however the average temperature of the focal track immediately following a CT acquisition protocol may still be around 1500° C. Therefore, demanding requirements are placed upon the design of the rotating anode. The present application proposes a multi-layer coating for the target region of a rotating X-ray anode which improves mechanical resilience and thermal resilience, whilst reducing the amount of expensive refractory metals required.

公开(公告)号：US09767982B2

公开(公告)日：2017-09-19

申请号：US14765391

申请日：2014-01-29

Applicant: Koninklijke Philips N.V.

Inventor： Rolf Karl Otto Behling ,  Marcus Walter Foellmer

IPC: H01J35/08 ,  H01J35/12 ,  H01J35/24

CPC classification number: H01J35/08 ,  G21K2207/005 ,  H01J35/12 ,  H01J35/24 ,  H01J2235/082 ,  H01J2235/086 ,  H01J2235/10

Abstract: A multiple X-ray beam X-ray source includes an anode structure and a cathode structure. The anode structure includes a plurality of liquid metal jets providing a plurality of focal lines. The cathode structure provides an electron beam structure that provides a sub e-beam to each liquid metal jet. The liquid metal jets are each hit by the sub e-beam along an electron-impinging portion of the jet circumferential surface that is smaller than half of the circumference of a cross-section of the liquid metal jet.

公开(公告)号：US09538979B2

公开(公告)日：2017-01-10

申请号：US14911745

申请日：2014-08-27

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling

IPC: H01J35/00 ,  A61B6/00 ,  H05G1/46 ,  H01J35/10 ,  H01J35/18 ,  A61B6/04

CPC classification number: A61B6/585 ,  A61B6/0407 ,  A61B6/4035 ,  A61B6/4266 ,  A61B6/4441 ,  A61B6/4464 ,  A61B6/54 ,  A61B6/586 ,  H01J35/00 ,  H01J35/10 ,  H01J35/18 ,  H05G1/46

Abstract: Rotating anode X-ray tubes degrade over time because of the action of the electron beam altering the surface of the focal spot area of a rotating anode. This causes a degradation in a resulting object image, when the source is used in an imaging application. An X-ray tube housing assembly is discussed which allows the correction of such effects. In particular, an additional beam of the X-radiation, which is not used for imaging, may be used to correct such effects.

Abstract translation: 旋转阳极X射线管由于电子束的作用改变旋转阳极的焦点区域的表面而随时间而降解。 当在成像应用中使用源时，这导致所得到的对象图像的劣化。 讨论了允许校正这种效果的X射线管壳体组件。 特别地，可以使用不用于成像的X射线的附加束来校正这种影响。

公开(公告)号：US20140307853A1

公开(公告)日：2014-10-16

申请号：US14360425

申请日：2012-10-24

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Rolf Karl Otto Behling

IPC: H01J35/10

CPC classification number: H01J35/10 ,  H01J2235/086

Abstract: The present invention relates to modulating a generated X-ray beam. In order to provide an increased, i.e. faster, periodic modulation of the X-ray intensity, an anode disk (28) for a rotating anode in an X-ray tube for modulating a generated X-ray beam is provided, the anode disk comprising a circumferential target area (34) with a target surface area, a focal track centre line (38), and a beam-dump surface area. The target surface area is provided such that, when being hit by an electron beam, X-rays for X-ray imaging can be generated; and the beam-dump surface area is provided such that, when being hit by an electron beam, no useful X-rays for X-ray imaging can be generated. The target surface area comprises a plurality of target portions (80,82), and the beam-dump surface area comprises a plurality of beam-dump portions (88). The target portions and the beam-dump portions are arranged along the focal track centre line such that a centre of a focal spot, in which X-ray radiation is generated, is located on the focal track centre line. Further, the structures on both sides of the focal track centre line are arranged such that same radiation intensities are provided on the both sides when being hit by a homogenous electron beam. Additionally it is provided that at least a part of the target surface area comprises target portions and beam-dump portions in an alternating manner in the direction of the focal track centre line.

Abstract translation: 本发明涉及调制生成的X射线束。 为了提供X射线强度的增加的，即更快的周期性调制，提供了用于调制所产生的X射线束的用于X射线管中的旋转阳极的阳极盘（28），阳极盘 具有目标表面积的圆周目标区域（34），焦点轨道中心线（38）和射束倾倒表面区域。 设置目标表面积，使得当被电子束击中时，可以产生用于X射线成像的X射线; 并且提供射束倾倒表面积使得当被电子束击中时，不会产生用于X射线成像的有用的X射线。 目标表面积包括多个目标部分（80,82），并且射束倾倒表面区域包括多个射束倾倒部分（88）。 目标部分和射束倾倒部分沿着焦点轨道中心线布置，使得产生X射线辐射的焦斑的中心位于焦点轨道中心线上。 此外，焦点轨道中心线两侧的结构被布置成使得当被同质电子束击中时在两侧设置相同的辐射强度。 另外，提供目标表面积的至少一部分在焦点轨迹中心线的方向上以交替的方式包括目标部分和射束倾倒部分。