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8995622 X-ray source with increased operating life  
An x-ray source is described. During operation of the x-ray source, an electron source emits a beam of electrons. This beam of electrons is focused to a spot on a target by a magnetic focusing...
8964940 Dynamically adjustable filament control through firmware for miniature x-ray source  
An x-ray beam control system includes a feedback control loop circuit having a modulation circuit. The feedback control loop circuit generates a control signal. A x-ray tube, has a filament...
8942351 Systems and methods for cargo scanning and radiotherapy using a traveling wave linear accelerator based X-ray source using pulse width to modulate pulse-to-pulse dosage  
Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons...
8938050 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...
8774366 Voltage stabilization for grid-controlled X-ray tubes  
The present embodiments improve the radiation monochromy of an x-ray device with a control electrode for controlling a flow of electrons generated between a cathode and an anode. A correction...
8588372 Apparatus for modifying electron beam aspect ratio for X-ray generation  
An apparatus for modifying an aspect ratio of an electron beam to form a focal spot having a desired size and aspect ratio on a target anode is disclosed. The apparatus includes an emitter element...
8542801 X-ray tube with secondary discharge attenuation  
The present embodiments relate to off-focal X-ray radiation attenuation within X-ray tubes, for example X-ray tubes used in CT imaging. In one embodiment, an X-ray tube for off-focal X-ray...
8447012 Radiation inspection apparatus  
A radiation inspection apparatus includes a radiation source, a measurement radiation detecting unit being a rectangle having a long side, and a reference radiation detecting unit that is disposed...
8384314 Traveling wave linear accelerator comprising a frequency controller for interleaved multi-energy operation  
An electromagnetic wave having a phase velocity and an amplitude is provided by an electromagnetic wave source to a traveling wave linear accelerator. The traveling wave linear accelerator...
8358741 Device and method to control an electron beam for the generation of x-ray radiation, in an x-ray tube  
A device to control an electron beam for the generation of x-ray radiation, has an electron emitter to generate an electron beam, to which emitter an emitter voltage can be applied, a diaphragm,...
8311186 Bi-directional dispenser cathode  
A multi-directional dispenser cathode has a cathode body that supports a plurality of electron emitters which spanning open portions of the cathode body. Each electron emitter has an inward facing...
8265227 Apparatus and method for calibrating an X-ray tube  
An apparatus and method for calibrating an x-ray tube include a computer programmed to acquire a starter voltage/current value corresponding to a width, a length, or a position of a target focal...
8232748 Traveling wave linear accelerator comprising a frequency controller for interleaved multi-energy operation  
An electromagnetic wave having a phase velocity and an amplitude is provided by an electromagnetic wave source to a traveling wave linear accelerator. The traveling wave linear accelerator...
8217937 Isosurfacial three-dimensional imaging system and method  
An isosurfacial three-dimensional imaging system and method uses scanning electron microscopy for surface imaging of an assumed opaque object providing a series of tilt images for generating a...
8077828 Radiation imaging device and radiation imaging method  
When the same subject is to be imaged consecutively plural times, a radiation imaging device is controlled so as to change an imaging time interval between respective imagings according to a set...
8065094 Method of calculating the structure of an inhomogeneous sample  
A method is provided of calculating the structure of an inhomogeneous sample in which an electron beam is used to cause excitation of x-rays from the sample under known conditions of beam energy...
7991117 Apparatus and method to facilitate dynamically adjusting radiation intensity for imaging purposes  
An x-ray-based radiation imaging apparatus (200) for use in imaging an object (201) can comprise a source of x-rays (202) having an output radiation intensity control input and a radiation...
7970103 Interrogating hidden contents of a container  
According to one embodiment, a system for interrogating hidden contents of a container comprises a controller, a detector system, and a data system. The controller receives a selection of a source...
7916838 Betatron bi-directional electron injector  
A Betatron having a toroidal passageway disposed in a cyclical magnetic field with a main electron orbit circumnavigating the toroidal passageway. Within the toroidal passageway is a first...
7875857 X-ray photoelectron spectroscopy analysis system for surface analysis and method therefor  
An X-ray photoelectron spectroscopy analysis system for analysing an insulating sample 20, and a method of XPS analysis. The system comprises an X-ray generating means 30 having an exit opening 32...
7800079 Assembly for detection of radiation flux and contamination of an optical component, lithographic apparatus including such an assembly and device manufacturing method  
An assembly for detection of at least one of radiation flux and contamination on an optical component includes a detector configured to receive at least one of the radiation flux and...
7639785 Compact scanned electron-beam x-ray source  
A compact, reliable scanning electron-beam x-ray source achieves reduced complexity and cost. In particular, the x-ray source includes an electron beam that is propagated parallel to an x-ray...
7580500 Computer tomography system having a ring-shaped stationary X-ray source enclosing a measuring field  
A computer tomograph (1) that comprises at least a stationary electron source for generating an electron beam (13), a ring-shaped, stationary X-ray source with a largely ring-shaped target (14)...
7576481 High voltage stable cathode for x-ray tube  
A method of producing a cathode for use in an x-ray tube assembly is provided including machining an emission aperture into a cup emission surface portion of a cup structure. The cup structure is...
7447297 X-ray source focal spot deflection methods and apparatus  
A method includes performing an at least partially automated method to synchronize an x-ray source focal spot (FS) position to a FS deflection feedback signal.
7409043 Method and apparatus to control radiation tube focal spot size  
A method for controlling focal spot size changes of an x-ray source in an imaging system includes measuring focal spot sizes as a function of a plurality of x-ray source operating parameters,...
7406154 High speed modulation of switched-focus x-ray tube  
A dose-modulated irradiating system includes an x-ray tube (20) with at least a filament (80) for generating electrons, a cathode (84) and an anode (92) for accelerating and collimating the...
7366374 Multilayer optic device and an imaging system and method using same  
An optic device, system and method for imaging are described. The optic device includes a first solid phase layer having a first index of refraction with a first photon transmission property and a...
7298826 X-ray generator  
An X-ray generator of this invention has an X-ray monitor that monitors a state of an X-ray emitted from a target. Hence the state of the X-ray can be monitored in real time to maintain the X-ray...
7286642 X-ray tube control apparatus and x-ray tube control method  
A maximum tube voltage value setting module 240a, a warming-up module 240b, a limit tube voltage control module 240c, a limit tube current control module 240d and a focus grid electrode control...
7249886 Method and apparatus for measuring effective focal spot parameters of an X-ray source  
A method for measuring focal spot shape of a radiation beam from a radiation source includes collimating the radiation beam using a collimator having a well-defined edge, measuring an intensity...
7209539 Process and device for testing parts by X rays  
The non-destructive test of a structure (10) such as an aircraft fuselage is done by placing an X-ray source (16) on one side of the structure, and placing a digital camera (24) on the other side....
7133495 X-ray generator  
An X-ray generator 1 includes an X-ray tube 11 having a cathode portion 16, a grid electrode 15 and a target 22, a voltage controller 27 and 32 for controlling voltages to be applied to the...
7123688 X-ray tube  
The invention relates to an X-ray tube which includes a device for at least substantially protecting an object to be examined against the incidence of undesirable X-rays (E) which can be produced...
7082188 Power source for regulated operation of the deflection coil of an x-ray tube  
A power source for the operation of a deflection coil for an electron beam of an x-ray tube has a voltage source and a bridge circuit that is connected with each end of the deflection coil,...
7001071 Method and device for setting the focal spot position of an X-ray tube by regulation  
In a method and a device for setting the focal spot position of an X-ray tube the focal spot position is regulated as a controlled variable by a closed loop regulation circuit. A deflector...
6954515 Radiation sources and radiation scanning systems with improved uniformity of radiation intensity  
A radiation source is disclosed comprising a source of charged particles that travel along a path. Target material lies along the path to generate radiation upon impact by the beam. A magnet is...
6920238 Precision imaging system  
An imaging system is disclosed for use in low-light environments or environments where low-levels of such radiation is desirable. Examples of such environments are night photography, laparoscopy,...
6885728 X-ray source  
A compact X-ray source is disclosed, improving controllability and insulation from unwanted high voltage effects. In one aspect, an active variable conductance device (130, 330) connected in...
6778633 Method and apparatus for prolonging the life of an X-ray target  
An X-ray generator comprises an evacuated and sealed X-ray tube, containing an electron gun and an X-ray target. An electron beam is produced by the electron gun in which the cathode is at...
6775354 Method and apparatus for reducing high voltage breakdown events in X-ray tubes  
An X-ray tube subsystem including an X-ray tube and a grid voltage supply that reduces high voltage breakdown events. The X-ray tube provides a grid bias connection, a filament bias connection,...
6687332 Method and apparatus for patient-in-place measurement and real-time control of beam-spot position and shape in a scanning electron beam computed tomographic system  
A scanning electron beam computed tomographic system is provided with a sub-collimation system that passes X-rays emitted by a beam spot formed by an electron beam that is scanned across an X-ray...
6570958 X-ray system for forming X-ray images  
The invention relates to an X-ray system/generator in which after the end of an X-ray exposure the grid of th X-ray tube is blocke4d as long as the X-ray exposure is read out from a detector (or...
6507640 X-ray beam position monitors  
An X-ray beam position monitor has a first plate assembly (1, 3) for detecting the position of the X-ray beam in a horizontal plane and a second plate assembly (6, 8) for detecting the position of...
6421420 Method and apparatus for generating sequential beams of penetrating radiation  
An apparatus and method for generating electronically steerable beams of sequential penetrating radiation. Charged particles from a source are formed into a beam and accelerated to a target....
6370218 Methods and systems for determining x-ray beam position in multi-slice computed tomography scanners  
Focal spot position determination systems having a high sensitivity to focal spot movement for use in connection with multi-slice computed tomography imaging systems are described. In one...
6339635 X-ray tube  
An x-ray tube has a vacuum housing containing a cathode arrangement that emits electrons and an anode having a target surface on which the electrons, accelerated by an electrical field and forming...
6282263 X-ray generator  
An X-ray generator comprises an evacuated and sealed X-ray tube, an electron gun, an X-ray target, an internal electron mask, and an X-ray window consisting of a thin tube of material with low...
6198804 Electron beam multistage accelerator  
A modular multistage accelerator for use in an X-ray treatment system includes a first 10 kV acceleration stage which houses an electron beam gun supplied with -50 kV of voltage. The modular...
6183139 X-ray scanning method and apparatus  
A method for scanning an x-ray target in a reverse geometry x-ray imaging system with a charged particle beam is disclosed. An aspect of the invention is directed to scanning patterns for moving...

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