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Matches 551 - 600 out of 7,934

Document Document Title
WO/2010/049866A3
Apparatus is described for generating an electron beam in the presence of a gas at a pressure higher than 100 Pa. The apparatus comprises an acceleration gap defined between a metallic cathode 18 having a flat surface spaced by a uniform...  
WO/2010/046837A3
The invention describes an X-ray tube for generating X-radiation, wherein the tube comprises a rotary structure, which comprises a rotating anode, a stationary structure for rotatably supporting the rotary structure, a hydrodynamic beari...  
WO/2010/067257A1
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 electron emitter (21) with a surface comprisin...  
WO/2010/067260A1
The present invention refers to X-ray tubes of the rotary-anode type for generating a fan beam of X-rays. More particularly, the invention is concerned with a system and method for compensating a class of system-related disturbances of t...  
WO/2010/061325A1
An X-ray tube (1), a medical device (21) comprising an X-ray tube, a program element and a computer readable medium are proposed. The X-ray tube comprises a target (3) adapted for generating X-rays upon impact of an electron beam (7) on ...  
WO/2010/061324A1
The application describes a rotatable anode for an X-ray tube, wherein the anode comprises a first unit (901) adapted for being hit by a first electron beam at least a second unit (902) adapted for being hit by at least a second electron...  
WO/2010/061323A1
In a rotatable anode (4) of an X-raytube, a heat transfer between the rotating disc of the anode (4a) and the second bearing element (11) is achieved by providing a contact material (14) within a gap (16a, b) between the anode disc(4a)an...  
WO/2010/061332A1
The present invention refers to an X-ray tube of the rotary-anode type which comprises at least one temporarily negatively biased auxiliary grid electrode (1 19) with an aperture through which an electron beam (115) emitted by a tube cat...  
WO/2010/058332A2
An X-ray tube and a medical device comprising such X-ray tube are proposed. The X-ray tube (1) comprises an emitter (3) for emitting an electron beam (5) along a beam path in a direction towards a target (7), a top electrode (15) arrange...  
WO/2010/060007A1
An x-ray tube is described that includes components for increasing x-ray image clarity in the presence of a moving x-ray source by modifying focal spot characteristics, including focal spot size and focal spot position, tn a first arrang...  
WO/2010/058330A1
The invention relates to a medical imaging system (100) comprising an X- ray tube (120) having a cathode (210) and the anode (230). There is arranged a grid (200) between the cathode (210) and the anode (230). The grid is switchable by a...  
WO/2010/046837A2
The invention describes an X-ray tube for generating X-radiation, wherein the tube comprises a rotary structure, which comprises a rotating anode, a stationary structure for rotatably supporting the rotary structure, a hydrodynamic beari...  
WO/2010/007375A3
An anode for an X-ray tube comprises at least one thermally conductive anode segment in contact with a rigid support member and cooling means arranged to cool the anode. The anode may comprise a plurality of anode segments aligned end to...  
WO/2010/002610A3
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 enclosure that houses both an anode having a tar...  
WO/2010/032363A1
Disclosed is an X-ray photography device having: a multi-X-ray source that has multiple X-ray focal points that generate X-rays by irradiating X-ray targets with electron beams; a detector that detects X-rays that are emitted from the mu...  
WO/2010/029370A2
An X-ray tube is produced by forming a first housing section (20) from sheet metal; forming a second housing section (22) from sheet metal, mounting an electron source (18) in one of the housing sections; mounting an anode (16) in one of...  
WO/2010/024821A1
A source of X-rays including at least two cathodes and at least one common anode configured and arranged so as to generate at least two spaced apart beams of X-rays emanating from respectively different locations of the anode, and separa...  
WO/2010/018502A1
The present invention refers to X-ray tubes for use in imaging applications with an improved power rating and, more particularly, to a multi-segment anode target (102') for an X-ray based scanner system using an X-ray tube of the rotary ...  
WO/2010/015960A1
A system comprises a radiation source (110), including a anode (112) and a cathode (114), a high voltage generator (202) that generates a source voltage that is applied across the anode (112) and cathode (114), wherein the source voltage...  
WO/2010/013772A1
Provided is an emitter, which has a carbon film structure and emits field-emitted electrons. In the emitter, local field concentration is suppressed and current deterioration and discharge phenomenon due to thermal deterioration are pre...  
WO/2010/006846A1
The invention relates to an x-ray source (2) having a plurality of electron sources (41..4n) disposed at a distance from one another in a longitudinal direction (3), and a common anode (8) that is disposed opposite said electron sources ...  
WO/2010/007375A2
An anode for an X-ray tube comprises at least one thermally conductive anode segment in contact with a rigid support member and cooling means arranged to cool the anode. The anode may comprise a plurality of anode segments aligned end to...  
WO/2010/005001A1
Disclosed is a target (1) for X-ray tubes, wherein a carbon base (4) is joined to an Mo base or an Mo alloy base (2) through a joining layer (3). The joining layer (3) has an MoNbTi diffused phase (6), an NbTi alloy phase (7), an Nb-ric...  
WO/2009/130613A3
The rotating anode x-ray tube has a composite outer bearing made from two rings of a high hot-hardness material and a spacer between the two rings made of a constant coefficient of thermal expansion material. The spacer is welded to the ...  
WO/2010/002610A2
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 enclosure that houses both an anode having a tar...  
WO/2009/156627A1
The invention relates to a support for a rotating target, having substantially the form of a centrally-perforated disk. The support is made from a material that is a nickel-based structural-hardening superalloy and takes the shape of a d...  
WO/2009/136349A3
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) for performing at least one translational...  
WO/2009/095047A3
X-ray generators (1) are known, having a housing (2) and components disposed therein for generating one or more X-rays. According to the invention, the housing (2) is formed by a tube body (3) made of ceramic.  
WO/2009/146827A1
In a radiation source (1) and a method for generating x-ray radiation (2), a fluid (9) is disposed in a fluid line (10) and is completely surrounded by the fluid line (10) in the direction of an evacuated chamber (3). Part of the fluid l...  
WO/2009/138933A1
To scan an object with differently shaped cone beams (112, 122), the present invention provides a CT scanner with a moveable X-ray tube (the meaning of "move the x-ray tube among a plurality of predefined positions" also covers the situa...  
WO/2009/022292A3
The present invention is related to high power X-ray sources, in particular to those ones that are equipped with rotating X-ray anodes capable of delivering a much higher short time peak power than conventional rotating X-ray anodes acco...  
WO/2009/136349A2
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) for performing at least one translational...  
WO/2009/112986A3
Tomosynthesis system with a rotating anode X-ray tube enabling a circular scan trajectory, wherein the X-ray tube 1 may be equipped witha large number ofcathodes (21, 22) distributed around an anode. This allows to generate X-rays (41, 4...  
WO/2009/130613A2
The rotating anode x-ray tube has a composite outer bearing made from two rings of a high hot-hardness material and a spacer between the two rings made of a constant coefficient of thermal expansion material. The spacer is welded to the ...  
WO/2009/127995A1
An X-ray tube (1) comprising a cathode (3), an anode (5) and a further electrode (7) is proposed. Therein, the further electrode is arranged and adapted such that, due to impact of 'free electrons (27) coming from the anode (5), the furt...  
WO/2009/021015A3
Systems and methods for highly collimated and temporally variable X-ray beams. Disclosed herein is a system for producing a collimated X-ray beam, the system including one or more distributed electron sources configured to produce electr...  
WO/2009/112986A2
Tomosynthesis system with a rotating anode X-ray tube enabling a circular scan trajectory, wherein the X-ray tube 1 may be equipped witha large number ofcathodes (21, 22) distributed around an anode. This allows to generate X-rays (41, 4...  
WO/2009/110447A1
Provided is an X-ray irradiator in which occurrence of discharge due to potential difference is reduced and which is reduced in size and weight. In the X-ray irradiator (1), an X-ray tube (11) and a high-voltage generator (2) are install...  
WO/2009/101576A1
A source (19) for multiple energy X-ray generation in particular by field emitting carbon nanotubes (1, 2) is presented. In order to achieve a spatial overlap of the trajectories of the X-ray beams coming from different emitters, a focus...  
WO/2009/101882A1
An X-ray generator comprises an electron beam generating part having a plurality of electron emitting elements and generating an electron beam corresponding to the driven electron emitting element and a target electrode for generating an...  
WO/2009/019645A3
A method and an apparatus for locally applying material to the surface of an anode of an X-ray source as well as a corresponding anode is presented. Anode material such as a repair material for filling a recess (121) in an X-ray emitting...  
WO/2009/076111A3
A multi-energy imaging system and method for selectively generating high-energy X-rays and low-energy X-ray beams are described. A pair of optic devices are used, one optic device being formed to emit high X-ray energies and the other op...  
WO/2009/102784A1
A device for generating x-rays has an enclosing vessel having a structure suitable to provide an enclosed space at a predetermined fluid pressure, wherein the enclosing vessel has a window portion and a shielding portion in which the shi...  
WO/2009/098027A1
An X-ray target for producing X-rays (110) in a region of incidence (M) of an electron beam (120) onto the X-ray target comprises an X-ray source layer (130) and a substrate (140). The X-ray source layer (130) comprises a high atomic num...  
WO/2009/095047A2
X-ray generators (1) are known, having a housing (2) and components disposed therein for generating one or more X-rays. According to the invention, the housing (2) is formed by a tube body (3) made of ceramic.  
WO/2009/078581A3
A microminiature X-ray tube with a triode structure using a nano emitter is provided, which can increase a field emission region as much as possible by means of nano emitters fine-patterned in a cathode to not only increase an emission c...  
WO/2009/092813A1
The invention relates to a radiogenic source comprising a vacuum chamber (50), means (56h) for injecting an optical wave (56i), a cold source (52), enabling electrons (52i) to be emitted in the vacuum by field emission when it is subject...  
WO/2009/092372A1
The aim of the present invention is to disclose an arrangement for X-ray computer tomography allowing continuous three-dimensional imaging of the scanned object or a partial volume of the scanned object at high temporal and spatial resol...  
WO/2009/091044A1
The distance (L1), from the central axis (O) of an X-ray tube in the direction perpendicular to the longitudinal direction of a filament coil (15) to the outer side surface of a cathode electron gun (16), is set shorter than the distance...  
WO/2009/068891A4
An X-ray tube is described having a filament for generating electrons (5), a cathode, and an anode (8) which comprises an elongate member (17) having a fixed point relative to the sealed housing of the tube and an end that is moveable re...  

Matches 551 - 600 out of 7,934