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US20120027182 |
CATHODE ASSEMBLY FOR AN X-RAY TUBE
A cathode assembly for an x-ray tube. In one example embodiment, a cathode assembly includes a cathode head, a filament, and first and second focusing tabs. The cathode head defines a recess... |
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US20140270087 |
X-RAY GENERATOR INCLUDING HEAT SINK BLOCK
An x-ray generator includes a housing, a cathode block that is arranged in the housing and emits electrons via a field emission scheme, an anode block that is arranged in the housing and generates... |
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US20110228909 |
ELECTRON SOURCE AND CATHODE CUP THEREOF
An embodiment of the invention relates to a cathode cup (20) comprising a receptacle for holding an electron emitter (21), wherein the cathode cup is provided at least in the area facing the... |
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US20150016590 |
Soft X-Ray Curtain Tube
An elongated x-ray tube that can emit a linear curtain of x-rays along its length. Methods of using an elongated curtain of x-rays. |
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US20090129549 |
X-RAY TUBE HAVING A FOCAL SPOT PROXIMATE THE TUBE END
An x-ray tube having a reduced spacing between the focal spot of an anode and an adjacent end wall of an evacuated enclosure is disclosed. This in turn positions the tube relatively closer to the... |
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US20090323898 |
THERMIONIC EMITTER DESIGNED TO CONTROL ELECTRON BEAM CURRENT PROFILE IN TWO DIMENSIONS
An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum... |
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US20110280371 |
TiO2 Nanotube Cathode for X-Ray Generation
A device is provided for the generation of x-ray emission from an x-ray source based on titanium dioxide (TiO2) nanotubes grown by electrochemical oxidation. TiO2 nanotubes are used as a cold... |
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US20110051895 |
X-RAY SYSTEM WITH EFFICIENT ANODE HEAT DISSIPATION
X-ray systems for use in high-resolution imaging applications with an improved power rating are provided. An X-ray source comprises at least one integrated actuator unit (206, 206′, 206a or 206b)... |
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US20120045036 |
X-Ray Tube Electron Sources
An electron source for an X-ray scanner includes an emitter support block, an electron-emitting region formed on the support block and arranged to emit electrons, an electrical connector arranged... |
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US20140079187 |
EMISSION SURFACE FOR AN X-RAY DEVICE
Embodiments of the disclosure relate to electron emitters for use in conjunction with X-ray devices. In one embodiment, the emitter features a round emission area capable of emitting electrons... |
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US20070183577 |
Cathode structures for X-ray tubes
An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure... |
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US20120027177 |
INDUSTRIAL X-RAY TUBE
An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and... |
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US20120219118 |
LOW VOLTAGE ELECTRON SOURCE WITH SELF ALIGNED GATE APERTURES, FABRICATION METHOD THEREOF, AND X-RAY GENERATOR USING THE ELECTRON SOURCE
An x-ray generating device includes at least a nano-structure based field emission electron source having a self-aligned gate aperture incorporated on a substrate. The device further includes at... |
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US20100150315 |
X-RAY SOURCE
An X-ray source with a cathode (2) that includes a first wire (4) having optionally thermal loops (12, 14) between an emission loop (10) and first and second ends (6, 8). A spiral second wire (30)... |
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US20110255667 |
LOW BIAS mA MODULATION FOR X-RAY TUBES
A segmented thermionic emitter is provided. The segmented thermionic emitter has, among other features, a plurality of segments substantially spanning an entire length of the thermionic emitter... |
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US20100020936 |
X-RAY TUBE
An x-ray tube has a vacuum housing supported so that it can rotate around a rotation axis, an anode that is arranged within the vacuum housing and that is connected in a rotationally fixed manner... |
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US20100316192 |
EMITTER FOR X-RAY TUBES AND HEATING METHOD THEREFORE
It is described an emitter (26, 40) for X-ray tubes comprising: a flat foil with an emitting section (30, 46); and at least two electrically conductive fixing sections (31-34; 41-44); wherein the... |
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US20110188634 |
X-RAY GENERATION DEVICE AND CATHODE THEREOF
An x-ray generation device and a cathode thereof are provided. The x-ray generation device comprises the cathode, a focusing device, an anode target, and a glass container. The cathode comprises a... |
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US20110280377 |
THERMIONIC SURFACE EMITTER AND ASSOCIATED METHOD TO OPERATE AN X-RAY TUBE
In a thermionic surface emitter and an associated method to operate an x-ray tube, the surface emitter has a conductor path in its emission surface, the conductor path having at least one current... |
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US20140029730 |
TENSIONED FLAT ELECTRON EMITTER TAPE
An electron beam emitter for generating an electron beam to be directed towards an anode of an X-ray tube for generating an X-ray beam, wherein the electron beam emitter comprises an electrically... |
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US20140362974 |
X-RAY GENERATING TUBE, X-RAY GENERATING APPARATUS AND X-RAY IMAGING SYSTEM USING THE SAME
Provided is an X-ray generating tube with improved withstand voltage property by a simple structure, the X-ray generating tube including a cathode connected to one opening of an insulating tube... |
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US20140169523 |
X-RAY TUBE WITH ADJUSTABLE INTENSITY PROFILE
An X-ray tube includes an emitter, and an electrode assembly. The emitter is configured to emit an electron beam toward a target. The electrode assembly includes at least one electrode having a... |
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US20140010354 |
APPARATUS AND METHOD OF MANUFACTURING A THERMALLY STABLE CATHODE IN AN X-RAY TUBE
An x-ray imaging system includes a detector positioned to receive x-rays, an x-ray tube configured to generate x-rays toward the detector from a focal spot surface, the x-ray tube includes a... |
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US20120148027 |
FIELD EMISSION X-RAY TUBE AND METHOD OF OPERATING THE SAME
Provided is a field emission X-ray tube. The field emission X-ray tube includes a cathode electrode provided to one end of a vacuum vessel and including a field emission emitter, an anode... |
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US20130301804 |
ELECTRICALLY HEATED PLANAR CATHODE
An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is... |
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US20120082300 |
X-RAY TUBE FOR GENERATING TWO FOCAL SPOTS AND MEDICAL DEVICE COMPRISING SAME
An X-ray tube for generating two focal spots displaced with respect to each other and a medical device using such X-ray tube are proposed. The X-ray tube (1) comprises a cathode (7) and an anode... |
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US20130039474 |
Long-Lasting Pulseable Compact X-Ray Tube with Optically Illuminated Photocathode
Systems and methods are described for a compact x-ray system that uses optical energy for triggering x-ray generation rather than a traditional filament. A photocathode is illuminated and the... |
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US20140153698 |
FLAT FILAMENT FOR AN X-RAY TUBE, AND AN X-RAY TUBE
A flat filament includes a first electron emission surface, a first current supply leg, a second current supply leg, a second electron emission surface disposed laterally of the first electron... |
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US20080187093 |
X-RAY GENERATION USING SECONDARY EMISSION ELECTRON SOURCE
A method and apparatus are provided for generating high frequency electromagnetic energy using a secondary emission electron source. An x-ray source is therefore provided having a primary electron... |
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US20140254767 |
CATHODE ASSEMBLY FOR A LONG THROW LENGTH X-RAY TUBE
Cathode assembly for a long throw length x-ray tube. In one example embodiment, a cathode assembly for an x-ray tube includes an electron emitter, an acceleration region, and a drift region. The... |
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US20100246766 |
MINIATURE X-RAY SOURCE DEVICE FOR EFFECTING RADIATION THERAPY
A miniature X-ray source device for effecting radiation therapy at least comprising a vacuum tube containing a cathode and an anode spaced apart at some distance from each other; emitting means... |
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US20100195797 |
THERMIONIC ELECTRON EMITTER AND X-RAY SOUCE INCLUDING SAME
A thermionic electron emitter (1) is proposed comprising an inner part (2) including a heatable flat emission surface (3) and an outer part (4) including a surrounding surface (6) substantially... |
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US20120163550 |
X-RAY GENERATOR
Provided is an X-ray generator for generating X-rays from an X-ray focal point that is a region in which electrons emitted from a filament impinge upon a rotating anode. The X-ray generator has a... |
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US20100002842 |
CATHODE ASSEMBLY FOR RAPID ELECTRON SOURCE REPLACEMENT IN A ROTATING ANODE X-RAY GENERATOR
A cathode assembly for a rotating anode X-ray source comprises two parts: a focusing part that is mechanically connected to the remainder of the X-ray source and permanently aligned with respect... |
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US20090041195 |
LASER STIMULATED CATHODE
A cathode has an emission layer that thermionically emits electrons upon exposure with a laser beam. The material of the emission layer has a product of density (ρ), measured in kgm3, heat... |
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US20140056406 |
RADIATION GENERATING TUBE, RADIATION GENERATING UNIT, AND RADIATION IMAGE TAKING SYSTEM
A radiation generating tube includes a vacuum envelope formed by an insulating tube, a cathode and an anode. At least one of the cathode and the anode is bonded to the insulating tube via a... |
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US20140044239 |
MINIATURIZED HIGH-SPEED MODULATED X-RAY SOURCE
A miniaturized high-speed modulated X-ray source (MXS) device and a method for rapidly and arbitrarily varying with time the output X-ray photon intensities and energies. The MXS device includes... |
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US20150262782 |
X-RAY TUBE DEVICE AND METHOD FOR USING X-RAY TUBE DEVICE
This X-ray tube device includes an anode and a cathode including an emitter emitting an electron to the anode. The emitter includes an electron emission portion in a flat plate shape, a pair of... |
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US20100278307 |
Thermionic Emitter Designed To Provide Uniform Loading and Thermal Compensation
An electron emitter assembly for use in an x-ray emitting device or other electron emitter-containing device is disclosed. In one embodiment, an x-ray tube is disclosed, including a vacuum... |
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US20090296888 |
Device For Generating X-rays And Use Of Such A Device
Device for generating X-rays, comprising: —a field emission cathode (10) configured to emit electrons when an electrical field is applied to the cathode (10); and—an anode (20), the anode being... |
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US20110026681 |
METHOD OF FAST CURRENT MODULATION IN AN X-RAY TUBE AND APPARATUS FOR IMPLEMENTING SAME
An x-ray imaging system includes a detector positioned to receive x-rays, and an x-ray tube coupled to a mount structure. The x-ray tube is configured to generate x-rays toward the detector and... |
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US20120321048 |
ELECTRON EMITTERS FOR X-RAY TUBES
Electron emitters for x-ray tubes. In one example embodiment, an electron emitter for an x-ray tube includes an electron filament and a plurality of electrical leads. The electron filament defines... |
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US20100284519 |
Electron Emitter Apparatus and Method of Assembly
An electron emitter assembly, and methods of assembly, is disclosed. The emitter assembly includes an electron emitter that is secured to a support device in a manner such that the emitter is... |
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US20140064453 |
INTEGRATED BACKSCATTER X-RAY SYSTEM
The different advantageous embodiments provide a method and apparatus. The apparatus comprises a moveable platform, a housing connected to the moveable platform, a power supply located inside of... |
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US20120140896 |
CATHODE STRUCTURES FOR X-RAY TUBES
An apparatus and method comprising a cathode structure which can be a cylindrical filament coiled in a helix or which can be constructed of a ribbon or other suitable shape. The cathode structure... |
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US20110058643 |
SYSTEM AND METHOD FOR GENERATING X-RAYS
In one embodiment, an X-ray tube is provided. The X-ray tube comprises at least one thermionic cathode configured to generate an electron beam, a target assembly configured to generate X-rays when... |
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US20100040201 |
Cathode with a Coating Near the Filament and Methods for Making Same
One or more components of an x-ray cathode assembly are manufactured using a metal deposition process. The deposition process is carried out by providing a cathode shield and a cathode head with a... |
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US20150124931 |
CATHODE FILAMENT ASSEMBLY
The present invention relates to a cathode for an X-ray tube, an X-ray tube, a system for X-ray imaging, and a method for an assembly of a cathode for an X-ray tube. In order to provide a cathode... |
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US20080310594 |
SCANNING X-RAY RADIATION
X-ray radiation is generated at a target that emits x-ray radiation in response to being struck by accelerated electrons, the electrons being emitted by a cathode that emits electrons in response... |
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US20130182825 |
X-RAY TUBE CATHODE WITH MAGNETIC ELECTRON BEAM STEERING
An x-ray tube cathode with magnetic electron beam steering. In one example embodiment, an x-ray tube cathode includes a cathode head and an electron emitter. The cathode head includes electrically... |