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| Number | Title | Issue Date |
| 8036340 | X-ray apparatus An X-ray apparatus includes a converter into which there is integrated a control logic circuit configured to regulate the supply voltage of a high-voltage power supply source of the X-ray apparatus. To this end, the intelligent voltage-voltage, converter is placed b... | 10/11/2011 |
| 7587027 | Method and apparatus for determining and displaying x-ray radiation by a radiographic device Methods for determining and displaying x-ray radiation generated by a radiographic device may include storing in a memory a plurality of tables that correlate voltage and current values of an x-ray tube to a predicted radiation rate for a given radiographic device. ... | 09/08/2009 |
| 7400708 | X-ray generator and X-ray CT apparatus comprising same 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 imp... | 07/15/2008 |
| 7391849 | Energy monitoring target for x-ray dose-rate control 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. ... | 06/24/2008 |
| 7366283 | Method to control anodic current in an x-ray source An apparatus and method for an x-ray system includes an x-ray emitter having a first electrode and a second electrode. A high voltage supply is electrically connected to the first electrode. A power supply is electrically connected to the second electrode. A control... | 04/29/2008 |
| 7340035 | X-ray tube cathode overvoltage transient supression apparatus An imaging tube (30) includes multiple high voltage elements (64). A voltage-clamping device (70) is coupled between the high voltage elements (64) and prevents the occurrence of overvoltage transients in the minor insulation of an imagin... | 03/04/2008 |
| 7327827 | X-ray high voltage device 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 | 02/05/2008 |
| 7313224 | Wireless integrated automatic exposure control module Systems and methods for providing independent exposure detection, X-ray spectrum and timing compensation, and providing an exposure termination signal to an X-ray system. The system incorporates an interface for receiving exposure characteristic data such as kVp, sp... | 12/25/2007 |
| 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 in a constant state. The X-ray monitor is positioned off the path on w... | 11/20/2007 |
| 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 module 240 | 10/23/2007 |
| 7283606 | Method for reconstructing projection data sets for dose-reduced sectional spiral scanning in computed tomography In a method and CT apparatus and software product for reconstructing incomplete projection data sets for dose-reduced sectional spiral scanning along a z axis of a patient on a table that is movable in the z direction in the CT apparatus that has a radiation source ... | 10/16/2007 |
| 7257193 | X-ray source assembly having enhanced output stability using tube power adjustments and remote calibration An x-ray source assembly includes an anode having a spot upon which electrons impinge based on power level supplied to the assembly, and an optic coupled to receive divergent x-rays generated at the spot and transmit output x-rays from the assembly. A control system... | 08/14/2007 |
| 7233645 | Systems and methods for controlling an X-ray source 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 ins... | 06/19/2007 |
| 7224771 | Shaped anode x-ray tube An x-ray tube (16) suitable for use in a computed tomography (CT) scanner (10) includes an envelope (42) which defines an evacuated chamber. An anode (40) and a cathode assembly (70) are disposed within the chamber. The anode defin... | 05/29/2007 |
| 7215733 | X-ray computed tomography apparatus A plurality of region-specific areas are set on a scanogram, and an image SD value is set for each region-specific area. A tube current calculating unit calculates a tube current value at each position on the basis of a tube current pattern in a tube current pattern... | 05/08/2007 |
| 7209545 | X-ray source assembly having enhanced output stability, and fluid stream analysis applications thereof An x-ray source assembly (2700) and method of operation are provided having enhanced output stability. The assembly includes an anode (2125) having a source spot upon which electrons (2120) impinge and a control system (2715/2720) for con... | 04/24/2007 |
| 7203270 | X-ray computed tomographic apparatus An X-ray computed tomographic apparatus includes a gantry, a reconstructing portion, and a tube current value determining portion. The gantry acquires projection data of an arbitrary range in a body axial direction by continuously moving a tabletop on which a subjec... | 04/10/2007 |
| 7144446 | On-board adsorber and method for producing and delivering oxygen An on-board adsorber and method for delivering oxygen on an aircraft that has a squat and compact configuration with a mass of adsorbent with a height to diameter ratio ranging from 0.8 and 2, and the ratio of the cross-sectional area S of the mass of adsorbent to t... | 12/05/2006 |
| 7142630 | X-ray computed tomography apparatus with X-ray intensity control An X-ray computed tomography apparatus includes an X-ray tube, a high voltage generator which generates a high voltage to be applied to the X-ray tube, an X-ray detector having a plurality of X-ray detection element lines, a scanogram generating unit which generates... | 11/28/2006 |
| 7110499 | High-voltage supply for an X-ray device 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... | 09/19/2006 |
| 7106830 | 3D x-ray system adapted for high speed scanning of large articles A system for forming an image of an object. The system includes a first scanning x-ray source for generating x-rays that diverge from a source point along a first scan path, the point being variable and determined by an input signal provided by a controller. A plura... | 09/12/2006 |
| 7095186 | Control circuit for controlling an electron-emitting device A control circuit for controlling an electron-emitting device is formed to draw, with a voltage applied, an excitation current being related to a number of electrons emitted. The inventive control circuit includes a first determinator for determining whether an amou... | 08/22/2006 |
| 7079622 | Method for supplying power to a heating element of a source of radiation and corresponding source A method for determining the heating time constant of a cathode of an X-ray tube. The value of a boost current applied during a preliminary period must be a function of both a pre-existing heating holding current and a service current to be used subsequently. A mode... | 07/18/2006 |
| 7065179 | Multiple target anode assembly and system of operation An anode assembly having multiple target electrodes is disclosed. Each target electrode produces an x-ray fan beam for radiographic data acquisition. The target electrodes are designed to sequentially generate an x-ray fan beam and therefore operate at a proportiona... | 06/20/2006 |
| 7039163 | Method for automatically setting an X-ray dosage for producing an X-ray tomographic image For automatically controlling or adjusting the X-ray dose when scanning an examination subject in a CT apparatus, a series of reference measurements are initially made by obtaining CT images of respective phantoms having different attenuation. The tube current for e... | 05/02/2006 |
| 7023960 | Method of adjusting the emission rate of radiation from a source of radiation To adjust the emission rate of radiation from an X-ray tube, the value of the current of the X-ray tube is modeled empirically by a second-order polynomial function depending on the heating current and a first-order polynomial function depending on the high voltage.... | 04/04/2006 |
| 7016468 | X-ray tube preheat control 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 ... | 03/21/2006 |
| 6990172 | Method and apparatus to determine tube current modulation profile for radiographic imaging A method and apparatus is disclosed to acquire scout scan data of a subject and analyzed to determine a peak-to-peak modulation amplitude of a normalized waveform indicative of subject size and shape. The scout scan data provides a representation of patient size and... | 01/24/2006 |
| 6987834 | Optimized record technique selection in radiography and fluoroscopy applications A method for regulating a scan dosage includes generating an initial technique command based on default patient size or the previous exposure and on completion of exposure, receiving the actual technique signal. A target entrance dose signal is determined based a de... | 01/17/2006 |
| 6961407 | Device to detect pressure in an x-ray tube In a method to detect the pressure in an x-ray tube having a cathode of the x-ray tube that is heated with a heater current, and wherein electrons are accelerated between the cathode and an anode by an applied x-ray tube voltage, the heater current is measured, a tu... | 11/01/2005 |
| 6956929 | Method for controlling modulation of X-ray tube current using a single topogram In a method for controlling the modulation of the tube current of an X-ray tube in the production of images using computed tomography, a single topogram of the examination subject is obtained and an orthogonal attenuation value is calculated therefrom, also making u... | 10/18/2005 |
| 6918698 | Integrated crystal mounting and alignment system for high-throughput biological crystallography A method and apparatus for the transportation, remote and unattended mounting, and visual alignment and monitoring of protein crystals for synchrotron generated x-ray diffraction analysis. The protein samples are maintained at liquid nitrogen temperatures at all tim... | 07/19/2005 |
| 6904127 | System and method of medical imaging having default noise index override capability A system and method of medical imaging is designed to reduce a patient's X-ray exposure during scanning. The system automatically generates a default noise index from a received set of scan parameter values that specifies a desired tube current of an X-ray source to... | 06/07/2005 |
| 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 series with the cathode is used in a closed loop, feedback arrangeme... | 04/26/2005 |
| 6775352 | Method and system for implementing variable x-ray intensity modulation schemes for imaging systems A method, system and medium for modulating the x-ray power of an imaging system so as to maintain a desired image noise in the imaging system is disclosed. In an exemplary embodiment, the method includes obtaining projection data, correcting the projection data resp... | 08/10/2004 |
| 6768786 | Circuit arrangement and method for generating an x-ray tube voltage A circuit arrangement for generating an X-ray tube voltage is described, wherein a switching device, connected downstream of a voltage controller (Gsu) and a oscillating current controller (Gri), operable to compare a first controlling variable... | 07/27/2004 |
| 6553095 | Automatic exposure control for dental panoramic and cephalographic x-ray equipment An apparatus and method used in dental panoramic and cephalographic x-ray equipment provides automatic adjustment of the pre-programmed exposure factors in order to obtain optimisation of the grey scale of the latent image on various kinds of x-ray detect... | 04/22/2003 |
| 6473491 | Method and x-ray device using adaptable power source A method described includes positioning an x-ray emitter at a treatment area, where the x-ray emitter is connected to a cable, setting a voltage source at a source voltage, and measuring a current through the x-ray emitter. The method may include comparin... | 10/29/2002 |
| 6178226 | Method for controlling the electron current in an x-ray tube, and x-ray system operating according to the method In a method and x-ray system for controlling the electron current in an x-ray tube emitted from a continuously heated electron emitter with an allocated focussing electrode to an anode, the potential of the focussing electrode is pulsed between a conducti... | 01/23/2001 |
| 6104781 | X-ray generator for powering an X-ray tube comprising at least two electron sources An X-ray generator for powering an X-ray tube, has at least two electron sources for forming focal spots of different sizes at the same area of the anode. The resolution can be adapted to relevant requirements by associating each electron source with a re... | 08/15/2000 |
