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| Number | Title | Issue Date |
| 7839967 | Electron computer tomography method and electron computer tomograph There is provided an electron computer tomography method for recording a moving object (27), in which an electron beam is deflected onto an anode arc (14) in order to generate X-ray radiation which passes through an object (27) and is picked up ... | 11/23/2010 |
| 7366280 | Integrated arc anode x-ray source for a computed tomography system An imaging system includes a gantry rotating around an object on a table. A cathode emitter is coupled to the gantry and generates an electron beam. An anode, also coupled to the gantry, is stationary with respect to the cathode emitter and generates an x-ray flux i... | 04/29/2008 |
| 7340029 | X-ray computed tomography apparatus for fast image acquisition An x-ray computed tomography apparatus has a stationary device (3) for generating x-ray radiation from an x-ray focus that moves around the examination volume on a target that at least partially surrounds an examination volume of the apparatus in one plane. F... | 03/04/2008 |
| 7333587 | Method and system for imaging using multiple offset X-ray emission points A technique is provided for imaging a field of view using an X-ray source comprising two or more emission points. Each emission point is configured to emit a fan of radiation encompassing less than the entire field of view. The emission points are activated individu... | 02/19/2008 |
| 7317785 | System and method for X-ray spot control The present technique provides a method for controlling an electron beam (e-beam) in an X-ray tube. The method comprises emitting electrons from an electron source to form the e-beam, accelerating the e-beam from a cathode through an aperture in a plate, focusing an... | 01/08/2008 |
| 7313214 | Computed tomography unit having an aperture stop A computed tomography unit includes at least one X-ray tube, that scans an object in a fashion rotating in a circle or spiral about a z-axis, in combination with an oppositely situated detector having a multiplicity of detector rows. Each detector row includes an ap... | 12/25/2007 |
| 7305063 | Cylindrical x-ray tube for computed tomography imaging A computed tomography imaging system includes an x ray tube (12, 212) that injects an x ray conebeam into an examination region (14). The x ray tube (12, 212) includes a rotating cylindrical anode (30, 230, 330, 430) having a target outer... | 12/04/2007 |
| 7281850 | Method and apparatus for aligning a fourth generation computed tomography system A method and apparatus for the alignment of a fourth generation Computed Tomography (CT) system is provided. The method includes receiving X-ray scan data from the CT system, and processing the received X-ray scan data to automatically generate alignment correction ... | 10/16/2007 |
| 7248672 | Multiple-position x-ray tube for diffractometer An x-ray source provides both a line focus output and a point focus output, and is mounted on a rotatable support to allow easy changing between the two. A housing has ports at different angular positions relative to an anode, and each port has an associated optic a... | 07/24/2007 |
| 7145981 | Volumetric computed tomography (VCT) The present invention provides a volumetric computed tomography (VCT) system capable of producing data for reconstructing an entire three-dimensional (3D) image of a subject during a single rotation without suffering from cone beam artifacts. The VCT system comprise... | 12/05/2006 |
| 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 |
| 7072436 | Volumetric computed tomography (VCT) The present invention provides a volumetric computed tomography (VCT) system capable of producing data for reconstructing an entire three-dimensional (3D) image of a subject during a single rotation without suffering from cone beam artifacts. The VCT system comprise... | 07/04/2006 |
| 7033076 | Method of stabilizing an x-ray source of an electron beam tomography system A method of calibrating an electron beam tomography (EBT) system includes determining a change in x-ray intensity for detecting elements in each detector array through multiple imaging sweeps during an initial activation of the EBT system, deriving scale factors bas... | 04/25/2006 |
| 7023950 | Method and apparatus for determining the position of an x-ray cone beam produced by a scanning electron beam A Laminography system with x-ray source and a detector assembly. The x-ray source uses a narrow, deflected pencil beam to scan to a linear target. An x-ray cone beam detected by the detector assembly is produced where the electron beam strikes the target. The target... | 04/04/2006 |
| 7020511 | Method for three dimensional cine EBA/CTA imaging Certain embodiments of the present invention provide a method for three-dimensional cine EBA/CTA imaging. The method includes monitoring a cardiac cycle of a patient and selecting a trigger point along the cardiac cycle. When the cardiac cycle of the patient reaches... | 03/28/2006 |
| 6907110 | X-ray tube with ring anode, and system employing same An x-ray tube has a stationary vacuum housing, in which are arranged an electron-emitting cathode and a ring anode with an impact surface on which the electron beam, accelerated by an electrical field, is incident, as well as a deflection system to focus and deflect... | 06/14/2005 |
| 6842499 | Method and apparatus for connecting temporally separated sinograms in an EBT scanner A method and apparatus are disclosed in an EBT scanner for generating an image from a data set collected from a subject beginning at an arbitrary time within a scanning time interval. A sequence of temporally separated, unfolded parallel view sinograms are generated... | 01/11/2005 |
| 6701000 | Solution to detector lag problem in a solid state detector The present invention, in one form, includes a digital x-ray imaging system which, in one embodiment, collects projection data from a plurality of views and reduces artifacts caused by detector residual signals. More specifically and in one embodiment, vo... | 03/02/2004 |
| 6670625 | Method and apparatus for correcting multipole aberrations of an electron beam in an EBT scanner A method and apparatus are disclosed for reducing variation in a spot size of an electron beam at a target due to multipole aberrations in an electron beam tomography (EBT) scanner. A magnitude of a DC voltage applied to a positive ion electrode (PIE) wit... | 12/30/2003 |
| 6404841 | Image thickness selection for multislice imaging system Scalable multislice systems which, in one embodiment, includes a scalable multislice detector, a scalable data acquisition system (SDAS), scalable scan management, control, and image reconstruction processes, and a user interface, are described. More spec... | 06/11/2002 |
| 6351660 | Enhanced visualization of in-vivo breast biopsy location for medical documentation An image processing system and method visually documents and displays the in-vivo location from which a biopsy specimen was extracted, by processing pre-biopsy and post-biopsy images. A composite image is created which visually emphasizes differences betw... | 02/26/2002 |
| 6198791 | Scalable multislice imaging system The present invention is, in one aspect, an imaging system having a detector that has multiple detector cells extending along a z-axis, the detector being configured to collect multiple slices of data; and a scalable data acquisition system configured to ... | 03/06/2001 |
| 6185275 | Systems and methods for correcting focal spot thermal drift The present invention, in one form, is a system for correcting thermal drift in an imaging system. More specifically, a correction algorithm determines an adjusted focal spot position based upon a first temperature focal spot position and a second tempera... | 02/06/2001 |
| 5841831 | X-ray computed tomography apparatus In an x-ray computed tomography apparatus the source of X-rays and the detector are able to scan a volume of the examination subject in a short time. The X-ray source contains an anode that is elongated in the z-direction, on which the focus travels by a ... | 11/24/1998 |
| 5361291 | Deconvolution filter for CT system A CT apparatus for reducing aliasing in reconstructed images uses an x-ray tube with a translatable focal spot to double the spatial sampling rate, over that achieved by a conventional CT machine. Radial resolution artifacts in the image, identified to th... | 11/01/1994 |
| 5313510 | X-ray tube for computer tomography An x-ray tube for computer tomography (CT) has a cathode for generating an electron beam, a rotating anode having an incident area onto which the electron beam is incident in a focal spot, and a deflection system for deflecting the electron beam, dependen... | 05/17/1994 |
| 5195112 | X-ray computer tomography system An X-ray computer tomography system with a stationary ring anode and a plurality of stationary electron sources for the construction of fast scan images from the inside of an object is improved in such a way that there is free access from both sides of th... | 03/16/1993 |
| 4992941 | Computer tomography apparatus with periodic focus deflection A computer tomography apparatus has an x-ray source with a focus, with the focus being periodically deflected during data acquisition, specifically during mean value formation of the signals obtained by the radiation detector. The mean value formation is ... | 02/12/1991 |
| 4962513 | Computer tomography apparatus which avoids image artifacts caused by periodical voltage variations A computer tomography apparatus has a circular anode and a circular radiation detector in which a patient to be examined is disposed. An electron beam from an electron gun is deflected by a beam deflection system, fed by a line voltage, so that the focus ... | 10/09/1990 |
| 4914681 | Computer tomography apparatus A computer tomography apparatus has an annular anode surrounding a volume in which an examination subject is disposed, a source for generating an electron beam, and a coil through which the electron beam passes which deflects the electron beam so as to be... | 04/03/1990 |
| 4897788 | Image correction for computed tomography to remove crosstalk artifacts A correction method and apparatus for Computed Tomography (CT) removes ring and streak artifacts from images by correcting for data contamination by crosstalk errors. Crosstalk coupling between all adjacent detectors can be measured using an off-center ph... | 01/30/1990 |
| 4730350 | Method and apparatus for scanning X-ray tomography Tomographic or sectional X-ray images (46) of a subject (32) are obtained rapidly by a method and apparatus that do not inherently require motion of the X-ray source (12) and detectors (13) or motion of the subject in order to generate the tomographic ima... | 03/08/1988 |
| 4665539 | Method and apparatus for forming tomographic images A method of forming tomographic images in cross-sectional tomography, in which a body is irradiated by a flat X-ray beam at different angles for successively forming a plurality of profiles on an X-ray screen or an X-ray detector, and a tomogram is constr... | 05/12/1987 |
| 4637040 | Plural source computerized tomography device with improved resolution An apparatus for examining a body by means of penetrating radiation. The apparatus has a source of penetrating radiation for transmitting radiation through a body, and a detector array disposed to detect the radiation after passage through the body. Radia... | 01/13/1987 |
| 4521901 | Scanning electron beam computed tomography scanner with ion aided focusing An electron beam production and control assembly especially suitable for use in producing X-rays in a computed tomography X-ray scanning system is disclosed herein. In this system, an electron beam is ultimately directed onto an X-ray producing target in ... | 06/04/1985 |
| 4352986 | Tomographic apparatus for the production of transverse layer images The exemplary embodiments disclose a computer tomograph which also is operable for the preparation of an x-ray shadow image. To this end every detector of the radiation receiver is extended in the longitudinal direction so as to permit the formation of th... | 10/05/1982 |
| 4352021 | X-Ray transmission scanning system and method and electron beam X-ray scan tube for use therewith A high speed multiple section, computed-tomographic x-ray scanner is provided. The scanner utilizes a multiple-anode, scanning electron beam x-ray source to provide high speed scanning of sections of the body. No mechanical motion is involved.... | 09/28/1982 |
| 4292563 | Multiple cathode X-ray tube for densitometers A multiple cathode X-ray tube for densitometers. This tube contains an anode assembly functioning by transmission, which is arranged along the sides of a regular convex polygon, with several cathodes, each of which sweeps one side of the polygon and a collimat... | 09/29/1981 |
| 4250425 | Rotating anode X-ray tube for tomodensitometers A hollow, cylindrical, rotating anode, X-ray tube for tomodensitometers. This tube contains a bell-shaped, hollow, cylindrical anode functioning by transmission, which is swept on its inner surface by an electron beam and produces in cooperation with a collima... | 02/10/1981 |
| 4234794 | Installation of radiodiagnosis with sweep The installation according to the invention practically eliminates the total irradiation of the radiologic examinated persons, using an X radiations source, which produces a swept filiform beam, synchronized with the sweep of a T.V. monitor. In this way t... | 11/18/1980 |
