摘要:
An X-ray source (100) for generating X-ray radiation of first and second energy spectra is proposed, wherein the X-ray intensity imbalance between the first and second energy spectra is reduced as compared to conventional X-ray sources. The reduction of the X-ray intensity imbalance is achieved by configuring a smaller electron impact angle (141) onto the anode (102) when the higher tube voltage is applied as compared to when the lower tube voltage is applied.
摘要:
An X-ray source device includes a cathode arrangement including a cathode device arranged to emit an electron beam therefrom. An anode arrangement includes an anode spaced apart from the cathode device at a focal distance and arranged to receive the electron beam from the cathode device at one of a plurality of focal spots thereon. The anode is movable such that each of the focal spots is alignable to receive the electron beam, in some instances while maintaining the focal distance of the anode from the cathode device. An associated method of forming an X-ray source device is also provided.
摘要:
Technology is described for steep angle of a focal track of an anode of an x-ray tube. In one example, an anode includes a disc-shaped anode and a focal track. The disc-shaped anode includes a bearing-facing surface, a window-facing surface positioned opposite the bearing-facing surface, and a focal track positioned between the window-facing surface and the bearing-facing surface, wherein the focal track is angled with respect to the window-facing surface, and the angle between the focal track and the window-facing surface is between 45° and 89°.
摘要:
Process for treating and receptacle for confining an anode, wherein the anode is placed in a confining receptacle that envelops this anode while leaving uncovered an annular coating zone of a frontal face of this anode, which is defined by an aperture of the receptacle; in order to carry out a least one operation for treating said annular coating zone, implementing at least one treating gas.
摘要:
The present invention relates to a radiographic imaging apparatus and a corresponding radiographic imaging method. The proposed apparatus comprises an X-ray source and a photon counting X-ray detector. The X-ray source comprises a rotary X-ray anode having a number of radial slits and a target layer provided on a surface of said rotary X-ray anode in between said radial slits for emitting X-ray radiation when hit by said electron beam. The said photon counting X-ray detector comprises a persistent current sensing and correction unit for sensing a persistent output current in a blanking interval during which no X-ray radiation is emitted by said X-ray source and for using the sensed persistent output current to correct a detector signal in a subsequent measurement interval during which X-ray radiation is emitted by said X-ray source.
摘要:
An imaging system includes an x-ray assembly having one or more x-ray sources configured to be energized at multiple positions. A control program energizes the one or more x-ray sources in a programmed sequence and controls the timing of the sequence.
摘要:
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.
摘要:
A structure and associated method for forming a liquid metal or spiral groove bearing assembly for an x-ray tube is illustrated that utilizes a unitary sleeve and a thrust ring or seal each formed of a weldable, non-refractory material. The sleeve and the thrust seal are welded to one another to provide an improved construction for minimizing leaks of the liquid metal bearing fluid. The structure of the sleeve and the thrust seal are formed with deformation restricting features that maintain the integrity of the bearing surfaces of the assembly when the thrust seal is secured within the sleeve and welded thereto to form the bearing assembly.
摘要:
The purpose of the present invention is to provide a stereo x-ray radiation device that is small and for which handling is simple. One cathode that functions as an emitter and two anodes that function as targets are disposed in a single straight-tube shaped vacuum vessel. The stereo x-ray generating device is characterized by the cathode being a cold cathode disposed in the center part of the vessel, the anodes being disposed each to one end of the vessel, and the spaces between the anodes disposed in the two ends of the vessel and the cathode being constituted such that the same can be moved closer or apart along the axial line of the vessel.
摘要:
An x-ray arrangement includes a vacuum container in, which a rotary anode and a rotor of an electrical machine are disposed. The rotary anode and the rotor have a torque-proof connection to one another and are rotatably supported in the vacuum container, so that the rotary anode and the rotor are rotatable around an axis of rotation. Viewed in a direction of the axis of rotation, a laminated stator core is disposed in an area of the rotor. The area of the rotor, in relation to the axis of rotation, surrounds the vacuum container radially outwards. A stator winding system is disposed in the laminated stator core. The stator winding system has windings embodied as a yoke winding.