Abstract: A voltage divider of a voltage generator is provided. The divider comprises an input terminal opposite an output terminal, a measurement resistor electrically connected in series between the input terminal and the output terminal, a footer resistor electrically connected in parallel between the output terminal and electrical ground, and a footer capacitor electrically connected in parallel between the output terminal and electrical ground. A value of the footer resistor is at least a magnitude smaller relative to a value the measurement resistor. The divider further includes a reactive bypass component having a first end electrically connected in parallel to the measurement resistor.

Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 260 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

Abstract: An electrical power supply for an X-ray tube comprising a current source, a transformer with a primary circuit and a secondary circuit coupled with a resistor (R), the unit supplying a high-voltage generator provided with an equivalent input capacitor is used, when the generator is powered on, to limit the intensity of the inrush current appearing in the circuit.

Abstract: The X-ray device comprises an X-ray source and a high-voltage generator for supplying the X-ray source with voltage, wherein the high-voltage generator has an intermediate circuit voltage generator and a high-voltage generator, the high-voltage generator is connected to the X-ray source, and the intermediate circuit voltage generator is connected to the high-voltage generator, wherein the intermediate circuit voltage generator and the high-voltage generator are structurally separate and the high-voltage generator is structurally positioned near the X-ray source, thereby keeping the high-voltage line to the X-ray source short.

Abstract: In embodiments, x-ray apparatus for imaging a subject, the x-ray apparatus having a base assembly and an x-ray source supported by the base assembly, the x-ray source being operable for generating x-ray energy, the x-ray apparatus having a control system for controlling operation of the x-ray source, the x-ray apparatus including: a detector for detecting a monitored condition, the detector generating detector output; the control system receiving the detector output; and the control system including a portable visual indicator independent of the base assembly and portable in relation thereto, the portable visual indicator displaying a state of the monitored condition.

Abstract: A system for reconstructing an image of an object includes a mobile imaging system, and a user removable module configured to be attached to the mobile imaging system.

Abstract: Portable x-ray devices and methods for using such devices are described. The devices have an x-ray tube powered by an integrated power system. The x-ray tube is shielded with a low-density insulating material containing a high-Z substance. The devices can also have an integrated display component. With these components, the size and weight of the x-ray devices can be reduced, and the portability of the devices enhanced. Thus, the portable x-ray devices are especially useful for applications where portability is an important feature such as in field work, remote operations, and mobile operations such nursing homes, home healthcare, teaching classrooms. This portability feature can be particularly useful in multi-suite medical and dental offices where a single x-ray device can be used in multiple offices instead of single using an x-ray device in each office.

Abstract: A radiation image radiographing system 1 including a radiation image detector 5 detecting a radiated radiation to obtain image information, a console 6 operating the radiation image detector 5, and associating means for performing the association with the console 6 operating the radiation image detector 5 at the time of radiography, wherein the radiation image detector 5 includes a power supplying means 21 controlling the state of power supply according to the operation status of the console 6 associated by the associating means.

Abstract: An x-ray imaging system that constantly evaluates and determines optimal image acquisition parameters, such as frame rate and pulse length, based on the application and motion detection during an x-ray acquisition scene, and applies optimal image acquisition parameters accordingly. The x-ray imaging method includes accessing previous image data and accessing present image data. Motion between the present image data and at least a portion of the previous image data is detected and the one or more image acquisition parameters are determined as a function of the detected motion.

Abstract: A correction table unit (5) contains correction tables for correcting output values of image data of the first image, the second image, . . . , the n-th image successively output from an X-ray plane detector (4) of a radiographic image diagnosis device and having different output rise characteristics. After correction of the image data, the second image data is subtracted from the first image data, . . . , and the n-th image data is subtracted from the first image data by a subtraction unit (8). As a result, a subtraction image, i.e., an angiographic image is displayed on display means (9). Since the affect of the different rise characteristics of each image data is eliminated, it is possible to obtain an angiographic image having a uniform background brightness and a preferable contrast.

Abstract: The invention relates to an x-ray device with an x-ray source fixed to a ceiling stand and a generator connected therewith in order to supply it with power. For simplification purposes, it is proposed in accordance with the invention to provide a conductor rail between the generator and the x-ray source on the ceiling in order to produce an electrical connection, along which conductor rail a ceiling stand accommodating the x-ray source can be moved.

Abstract: In an information processing apparatus which transfers target information to an external data processing device to process the information, and saves the processed information, a data management unit stores second identification information corresponding to the target information in association with the target information to which first identification information is attached. The first changing unit deletes the first identification information from the target information and adds the corresponding second identification information to the target information in the data management unit. The transfer unit transfers the target information processed by the first changing unit to the external data processing device.

Abstract: An X-ray apparatus comprises a general switch designed to eliminate the residual energy stored in capacitances of this X-ray apparatus. To this end, the general switch comprises several series-connected switch cells, each comprising a switch component constituted by a sidac parallel-connected with a thyristor. The number of cells is determined as a function of the voltage to be discharged. The apparatus has an external control circuit used to trigger the discharging of the first cell. Once the voltage in the first cell drops, the discharging of the second cell is triggered by an internal control circuit, and so on and so forth. The remaining cells are triggered at the same time, once they support a voltage greater than or equal to a predefined transition voltage. Thus, a chain reaction of the discharging of the stored energy is implemented.

Abstract: A CT scanner which collects X-ray projection data of a subject and which generates an image in the subject from the projection data, the CT scanner includes tubes which emit X-rays and which include grids to switch emission and stoppage of the X-rays, a unit which generates a high voltage to be supplied to the tubes, a cable which sends the high voltage to each of the tubes, circuits which change potentials of the grids arranged in the tubes, respectively, a control unit which controls the circuits to switch the emission and the stoppage of the X-rays in a pulse manner while the tubes rotate around the subject, detectors arranged to face the tubes, respectively, and a unit which validates an output signal from the detector facing the tube emitting the X-rays and which invalidates an output signal from the detector facing the tube stopping the emission of the X-rays.

Abstract: The invention relates to an x-ray device with an x-ray source fixed to a ceiling stand and a generator connected therewith in order to supply voltage. In order to achieve as compact an arrangement as possible, it is proposed in accordance with the invention to provide the generator with means of suspended fixing on a ceiling.

Abstract: A power system and method for supplying power to a wireless X-ray detector utilizes a detachable handle for a wireless X-ray detector. The handle carries a battery which, when the detachable handle is coupled to a wireless X-ray detector, provides the wireless X-ray detector with a mobile supply of power. A detachable handle charging station may recharge a plurality of detachable handles, providing a swappable supply of power for a wireless X-ray detector. Charging stations for such handles, or for entire detectors are also disclosed.

Abstract: A mobile dual-energy X-ray imaging system is presented. The mobile dual-energy X-ray imaging system is a digital X-ray system that is designed both to acquire original image data and to process the image data to produce an image for viewing. The system has an X-ray source and a portable flat-panel digital X-ray detector. The system is operable to produce a high energy image and low energy image, which may be decomposed to produce a soft tissue image and a bone image for further analysis of the desired anatomy. The system is disposed on a carrier to facilitate transport. The imaging system has an alignment system for facilitating alignment of the flat-panel digital detector with the X-ray source. The imaging system also comprises an anti-scatter grid and an anti-scatter grid registration system for removing artifacts of the anti-scatter grid from images.

Abstract: The invention relates to a gantry for an x-ray device. According to the invention at least one screening device used to reduce interactions with electromagnetic disturbance fields is provided for the at least one transmitter for the non-contact power or signal transmission between a stationary part and a rotatable part of the gantry.

Abstract: An apparatus to control transmission of an electromagnetic radiation generated by a radiation source of a radiation generator is provided. The radiation source includes an anode opposite a cathode. The apparatus comprises at least one printed circuit board assembly fastened at the anode of the radiation generator. The printed circuit board assembly comprises at least one first layer that includes a conduit to receive a mechanical device attaching the anode at the at least one first layer.

Abstract: A method includes automatically determining a specific mobile device to use from a plurality of mobile devices based on at least one of a battery metric, a patient procedure, and a location of the devices or of the patient.

Abstract: An electrical power supply for an X-ray tube comprising a current source, a transformer with a primary circuit and a secondary circuit coupled with a resistor (R), the unit supplying a high-voltage generator provided with an equivalent input capacitor is used, when the generator is powered on, to limit the intensity of the inrush current appearing in the circuit.

Abstract: In an X-ray generating device of the neutral grounding system, to remove an unbalance voltage generated due to difference in impedance of parallel transformer coils of the high voltage transformer and particularly an unbalance voltage involved with difference in impedance above and below the neutral points generated in a metal X-ray tube, a plurality of currents flowing in opposite directions through primary windings of the parallel transformer coils in the high voltage transformer are passed through by or wound around a common toroidal coil or wound around an outer circumference of the toroidal coil at a predetermined ratio of winding number, and the unbalance voltage occurring to the secondary side is cancelled by changing primary current with magnetic behavior.

Abstract: An X-ray device having an X-ray source, a high voltage generator supplying power to the X-ray tube and an inverter to generate, at the output end, an AC input voltage for the high voltage generator is disclosed. Provision is made therein for a resonance network to be formed between the inverter and the high voltage generator. This allows transmission of the AC input voltage with low power dissipation and low radiation levels. It also achieves spatial separation of the inverter from the high voltage generator and the X-ray source.

Abstract: A target structure for an electron linear accelerator converts energy in an electron beam to x-rays and provides for the monitoring and control of the effective energy of the electron beam by collecting and processing a residual current in the target structure.

Abstract: Systems, methods and apparatus are provided through which in some embodiments, a mobile imaging system includes one or more fuel cells. Some embodiments include further electric power sources, such as battery and/or an external AC power source.

Abstract: A power supply for a device which has a load, comprising a first resonant generator and a second resonant generator, coupled in parallel, each generator having a phase output. The power supply further comprises a control circuit coupled to the first and second generators controlling the first and second phase outputs, wherein the first phase output and the second phase output are summed to provide a variable power supply to the load.

Abstract: A radiation generator comprising a radiation source, a high voltage tank assembly to energize the radiation source and a power circuit configured to supply alternating current (AC) power to the high voltage tank assembly is provided. The high voltage tank assembly comprises a voltage multiplier assembly configured to include a printed circuit board comprising multiple slots, plurality of electrical components configured to be mounted on the printed circuit board and at least one insulating cover with multiple projections configured to be placed on one of the first surface and the second surface of the printed circuit board. Further, the projections of the insulating cover are configured to fit into the slots of the printed circuit board. The projections when fitted into the slots provide insulation barrier to the electrical components mounted on the printed circuit board.

Abstract: 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 second solid phase layer having a second index of refraction with a second photon transmission property, the solid phase layers being situated between an output face and a non-flat input face. The first and second layers are conformal to each other. The imaging system includes a source of electrons and a target, with an array of the optic devices coupled thereto to form limited cone beams of X-ray radiation.

Abstract: Methods and apparatus for an imaging system are provided. The imaging system includes a gantry having a stationary member coupled to a rotating member. The rotating member has an opened area proximate an axis about which the rotating member rotates. An x-ray source provided on the rotating member. An x-ray detector may be disposed on the rotating member and configured to receive x-rays from the x-ray source. A rotary transformer having circumferentially disposed primary and secondary windings may form part of a contactless power transfer system that rotates the rotatable portion of the gantry at very high speeds, the primary winding being disposed on the stationary member and the secondary winding being disposed on the rotating member.

Abstract: An X-ray apparatus comprises a general switch designed to eliminate the residual energy stored in capacitances of this X-ray apparatus. To this end, the general switch comprises several series-connected switch cells, each comprising a switch component constituted by a sidac parallel-connected with a thyristor. The number of cells is determined as a function of the voltage to be discharged. The apparatus has an external control circuit used to trigger the discharging of the first cell. Once the voltage in the first cell drops, the discharging of the second cell is triggered by an internal control circuit, and so on and so forth. The remaining cells are triggered at the same time, once they support a voltage greater than or equal to a predefined transition voltage. Thus, a chain reaction of the discharging of the stored energy is implemented.

Abstract: Certain embodiments of the present invention provide a method for providing power to an x-ray imaging system including: sensing an electrical signal from a second power source; and routing the electrical signal from the second power source through at least one switch to an x-ray imaging system in response to the sensing an electrical signal from the second power source, wherein the at least one switch is capable of routing an electrical signal from at least one of: a first power source and the second power source. In an embodiment, the method further includes communicating a feature lockout signal to the x-ray imaging system in response to the sensing the electrical signal from the second power source. In an embodiment, the method further includes detecting the status of a safety sensor before routing the electrical signal from the second power source through the at least one switch.

Abstract: An X-ray apparatus includes a rotary anode X-ray tube, a stator coil, and a drive-power-supply device. The rotary anode X-ray tube has an anode target arranged in a vacuum envelope, a rotary body coupled to the anode target and configured to rotate together with the anode target, and a fixed shaft supporting the rotary body, allowing the same to rotate. The stator coil generates a rotating magnetic field for rotating the rotary body of the rotary anode X-ray tube. The drive-power-supply device controls drive power to be supplied to the stator coil. The apparatus further includes a memory unit that stores a plurality of drive conditions for controlling the drive power to be supplied to the stator coil, and a control unit that selects one drive condition from the plurality of drive conditions and causes the drive-power-supply device to output drive power that matches said one drive condition.

Abstract: A semiconductor switch 12 connected in series with a smoothing capacitor 12 is constituted by connecting in parallel a diode 13D which permits to flow current regenerated from energy of electric charges stored in a high voltage capacitor 17 to a primary side of a high voltage transformer 15 for the smoothing capacitor 12 and switching means 13S which interrupts an output from the smoothing capacitor 12, and after turning off the switching means 13S, through alternative on and off control of switching means 161S˜164S the energy of electric charges stored in the high voltage capacitor 17 is regenerated to the smoothing capacitor 12 by making use of parasitic leakage inductance 15L. As a result, an X-ray high voltage device is provided which permits to drop a wave tail of a tube voltage in a high speed without complexing the structure of the high voltage part thereof.

Abstract: An X-ray imaging system includes an X-ray source operable to generate an X-ray beam, an X-ray receiver receiving the X-ray beam, a power generator generating power to the X-ray source to generate the X-ray beam, a grid disposed between the X-ray source and the X-ray receiver, a first pulse generator generating a first signal comprising first multiple pulses at a first pulse rate, each of the first multiple pulses having a pulse width, and a second pulse generator coupled to the grid and the power generator. The second pulse generator is configured to generate a second signal including second multiple pulses at a second pulse rate during each pulse width of the first multiple pulses, wherein the second signal is communicated to the grid to cause the X-ray beam to pulse on and off in accordance with the second signal during imaging.

Abstract: Between terminals of secondary windings in a high-voltage transformer (3), there are connected in parallel input side terminals of a plurality of diode full bridge circuits each via voltage maintaining means such as a capacitor maintaining a voltage peak value for a longer period than the cycle of an inverter (2). Between the input side terminals of the diode full bridge circuits, there are connected voltage maintaining means such as capacitors maintaining a voltage peak value for a longer period than the cycle of the inverter. Moreover, the output side terminals of the diode full bridges are connected in series via smoothing means such as almost equivalent smoothing capacitors and between the output side terminals, an anode grounding type X-ray tube (5) is connected. Thus, it is possible to realize a small-size and light-weight device at a reduced cost and reduce the ripple in the output voltage while using the anode grounding type X-ray tube.

Abstract: In accordance with one embodiment, a contactless power transfer system is provided that comprises a stationary member including a power input configured to receive power at first voltage from a power supply. The system further includes a rotating member rotatably coupled to the stationary member and a rotary transformer. The rotary transformer has primary and secondary sides, with the primary side being disposed on the stationary member. The primary side has a primary winding that receives power at the first voltage from the power input. The secondary side is disposed on the rotating member and produces power at a second voltage. The secondary side has a rotating core and separate secondary sub-windings, each of which has forward and return paths that are circumferentially disposed about the rotating core. The forward and return paths of each of the sub-windings rotate proximate to, and are disposed a substantially equal distance from, the primary winding disposed on the stationary member.

Abstract: 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 cathode portion 16 and the grid electrode 15, and switches 33 and 34 for operating ON and OFF of the X-ray generator 1 and of X-ray emission. The voltage controller 27 and 32, based on an ON-signal for the X-ray generator 1 and an OFF-signal for the X-ray emission, applies a positive standby voltage Vf1 to the cathode portion 16 and applies a negative cutoff voltage Vc1 to the grid electrode 15.

Abstract: The disclosed, embodiments relate to a high-voltage supply (11, 13, 23) for an X-ray device. The X-ray device comprises an X-ray tube (15) and a high voltage generator(1), for generation of the high voltage necessary for operating the X-ray tube (15). The high voltage supply (11, 13, 23) comprises electrically-conducting lines (11, 13), for the connection of the high voltage generator to the X-ray tube (15). Each of the lines (11, 13) comprises one end which may be connected to the high voltage generator (1) and a further end which may be connected to the X-ray tube (15). At least one end of at least one of the lines (11, 13) may be connected to an electrical terminal resistor (39) which may be arranged between the line (11, 13) and the high voltage generator (1), or between the line (11, 13) and the X-ray tube (15).

Abstract: The present invention is directed to an apparatus for supplying power to a rotatable x-ray tube for generation of an x-ray beam for acquisition of CT data. The apparatus includes a slip ring to transfer power from a stationary inverter to a rotatable HV tank. The HV tank conditions the transferred power and creates a voltage potential across the x-ray tube for x-ray generation. The inverter has a single or pair of series resonant circuits connected either directly to the slip ring or indirectly through a transformer to limit frequency content and reduce common-mode component of the voltage and current waveforms carried by the slip ring as well as reduce power losses.

Abstract: A multichannel, contactless power transfer system includes a primary power inverter disposed on a stationary side of the system, and an auxiliary power inverter disposed on the stationary side of the system. A rotary transformer has a primary side thereof disposed on the stationary side of the system and a secondary side disposed on a rotating side of the system. The rotary transformer is configured to couple primary power from an output of the primary power inverter to a primary power voltage output on the rotating side of the system, and is further configured to couple auxiliary power from an output of the auxiliary power inverter to at least one auxiliary voltage output on the rotating side of the system.

Abstract: A power supply for X-ray generators which includes at least one inverter (11, 12, 13), at least one transformer (111, 121, 131) and at least one voltage cascade (112, 122, 132) for generating a supply voltage for an X-ray tube (15). In order to increase the output power that can be achieved with a comparatively small weight and a low ripple or output capacitance, the voltage cascade is conceived in respect of its capacitances and the stray inductance of the transformers (111, 121, 131) in such a manner that it can be made to operate in the resonance mode by appropriate control of the inverter. In respect of the properties mentioned it is notably advantageous to integrate a two-phase embodiment or three-phase embodiment with an X-ray system so as to form a compact tank generator.

Abstract: A current feedback circuit in a dental imaging apparatus, which measures the x-ray tube current produced by the x-ray filament. During preheat, when the tube current is sensed to be appropriate for production of a constant rate of electrons, preheat is stopped, and diagnostic radiation emission begins. This circuit eliminates a fixed amount of preheat pulses which contribute unusable radiation during preheat of the filament in prior art systems.

Abstract: The invention relates to a method of controlling an X-ray apparatus containing an X-ray emitter. Control means for the X-ray apparatus are provided with exposure time correction data for given mains voltages and the current mains voltage is measured before and/or during exposure and the exposure time is corrected in accordance with the correction data, and to an X-ray apparatus for carrying out said method.

Abstract: The present invention discloses an X-ray source comprising an X-ray tube including a target generating an X-ray in response to an electron beam incident thereon emitted from an electron gun and an X-ray exit window emitting thus generated X-ray; a power supply having a structure including an insulating block molding therein a voltage generating part supplying a voltage to the X-ray tube; a first planar member securing the X-ray tube while being arranged on one side of the insulating block; and a second planar member disposed on a side of the insulating block opposite from the first planar member. The first and second planar members are fastened to each other while holding the insulating block therebetween.

Abstract: An X-ray computed tomography apparatus includes a first X-ray tube configured to generate X-rays with which a subject to be examined is irradiated, a first X-ray detector configured to detect X-rays transmitted through the subject, a second X-ray tube which generates X-rays with which a treatment target of the subject is irradiated, a rotating mechanism which rotates the first X-ray tube, the first X-ray detector, and the second X-ray tube around the subject, a reconstructing unit configured to reconstruct an image on the basis of data detected by the first X-ray detector, and a support mechanism which supports the second X-ray tube. The central axis of X-rays from the second X-ray tube tilts with respect to a body axis of the subject. This makes it possible to reduce the dose on a portion other than a treatment target.

Abstract: The present invention is directed to an apparatus for supplying power to a rotatable x-ray tube for generation of an x-ray beam for acquisition of CT data. The apparatus includes a slip ring to transfer power from a stationary inverter to a rotatable HV tank. The HV tank conditions the transferred power and creates a voltage potential across the x-ray tube for x-ray generation. The inverter has a single or pair of series resonant circuits connected either directly to the slip ring or indirectly through a transformer to limit frequency content and reduce common-mode component of the voltage and current waveforms carried by the slip ring as well as reduce power losses.

Abstract: A method and apparatus for providing a miniaturized, flexible high voltage up-converter. Aspects of the invention are particularly useful in providing an apparatus comprising a plurality of up-converting modules while also allowing the apparatus to maintain a desired degree of flexibility. However, certain aspects of the invention may be equally applicable in other scenarios as well.

Abstract: A system and method for providing pulsed power application for an x-ray tube that comprises an x-ray tube having an anode and cathode; and a power supply adapted to provide an anode-to-cathode gap accelerating potential and photons, wherein the gap voltage and photons are pulsed and received by the x-ray tube via a single cable from the power supply resulting in a pulsed x-ray radiation.

Abstract: A radiation imaging apparatus includes a radiation detecting unit and an image-display controlling unit. The radiation detecting unit has radiation detectors, arranged in a two-dimensional array, for detecting radiation transmitted through an object as electrical signals. The image-display controlling unit radiographs radiation images of the object, detected as the electrical signals by the radiation detecting unit, at a predetermined frame rate as continuous images in a plurality of frames and displays a processed image given by subtracting an m-th image from an (m+1)-th image in synchronous with either the m-th image or the (m+1)-th image that does not undergo the subtraction in a display, where m is a natural number.

Abstract: A control system for an X-ray source includes a sensor interface for receiving one or more sensor signals representative of operation of the X-ray source; a programmable controller operative in response to the one or more sensor signals and a sequence of control instructions for generating one or more control signals for controlling the X-ray source; and a control interface for supplying the one or more control signals to the X-ray source, either directly or indirectly.