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| Number | Title | Issue Date |
| 5625192 | Imaging methods and imaging devices An imaging method and an imaging device are disclosed which use no image forming optical system. A grid system 25 including an objective grid array 22 with a plurality of coplanarly arranged grids having pitches different from each other and a detector gr... | 04/29/1997 |
| 5610967 | X-ray grid assembly An x-ray imaging system according to the present invention comprising a stepped scanning-beam x-ray source and a multi-detector array. The output of the multi-detector array is input to an image reconstruction engine which combines the outputs of the mult... | 03/11/1997 |
| 5608776 | Methods and apparatus for twin beam computed tomography Methods and apparatus for performing a computed tomography scan are described. In one embodiment of the apparatus, a twin beam computed tomography scanner includes a beam splitter, an x-ray source for generating an x-ray to be projected generally towards,... | 03/04/1997 |
| 5606589 | Air cross grids for mammography and methods for their manufacture and use Air cross grids, for absorbing scattered secondary radiation and improving X-ray imaging in general radiography and in mammography, are provided with a large plurality of open air passages extending through each grid panel. These passages are defined by t... | 02/25/1997 |
| 5604353 | Multiple-channel, total-reflection optic with controllable divergence An apparatus and method for providing focused x-ray, gamma-ray, charged particle and neutral particle, including neutron, radiation beams with a controllable amount of divergence are disclosed. The apparatus features a novel use of a radiation blocking st... | 02/18/1997 |
| 5581592 | Anti-scatter X-ray grid device for medical diagnostic radiography An anti-scatter x-ray grid for medical diagnostic radiography includes a substrate having channels therein of material that is substantially non-absorbent of x-radiation and absorbing material in the channels including material that is substantially absor... | 12/03/1996 |
| 5544216 | X-ray examination apparatus An x-ray examination apparatus has an x-ray tube having an anode dish with a number of selectively activatable focal spots that are arranged such that all of the focal spots are intersected by a common straight line. In order to obtain an x-ray examinatio... | 08/06/1996 |
| 5528659 | Radiation flux polarizer or distributor The invention provides a polarizing device and a method for producing and utilizing the device. The device produces a modification in radiation flux and provides a bias toward photons approaching a target's face at more or less right angles. Accordingly, ... | 06/18/1996 |
| 5528653 | Rotational coniformly-focused gamma radiating unit The present invention provides a rotator Gamma radiation unit which adapts to medical Gamma systems especially. The radiation source bodies carrying sources can rotate by 360° within a radiation protection case. The trace of the radiation line forms seve... | 06/18/1996 |
| 5524041 | Radiation collimator system A collimator assembly for removing selected radiation output from a specimen. The assembly includes collimator elements with each element having walls comprised of a first material covered by an inner layer of a second material which preferentially absorb... | 06/04/1996 |
| 5512754 | Filtered collimator for dual isotope medical imaging An X-ray collimator is provided to permit diagnostic medical imaging of two or more radioactive isotopes emitting spectrically close gamma rays. The collimator includes a filter plate at one or both ends of the collimator's tubular passageways with the fi... | 04/30/1996 |
| 5479469 | Micro-channel plates A micro-channel plate for use in focusing X-rays or particles of equivalent wavelengths has a radially packed array of square pores. For focussing parallel rays, such micro-channel plate may consist of two square-pore spherically curved and radially packe... | 12/26/1995 |
| 5468970 | Device for collimating beams of a radiation Device for collimating beams of a radiation. This device includes a plurality of parallel plys (8) of wires (10) which are made of or coated with a material able to absorb the radiation. Application to the collimation of beams of neutrons.... | 11/21/1995 |
| 5459320 | Tomography machine with gamma-ray detection A tomography machine with gamma ray detection has a collimator, the arrangements of holes of which are focused on a geometric slice of a patient's body, the slice having a thickness determined a priori, for the examination of the slice. Reconstructed tomo... | 10/17/1995 |
| 5455849 | Air-core grid for scattered x-ray rejection The invention is directed to a grid used in x-ray imaging applications to block scattered radiation while allowing the desired imaging radiation to pass through, and to process for making the grid. The grid is composed of glass containing lead oxide, and ... | 10/03/1995 |
| 5436958 | Adjustable collimator A collimator for a gamma camera is formed by a stack of lamina formed from tungsten. Each lamina has an array of openings formed through it, and a movable support member translates the lamina into different alignments of these openings to form correspondi... | 07/25/1995 |
| 5432349 | Fourier transform microscope for x-ray and/or gamma-ray imaging A Fourier transform microscope for use in imaging a source of x-ray and/or gamma-ray radiation includes first and second grids arranged in proximity to the source. The first grid includes an arrangement of first subgrids elements with a first predetermine... | 07/11/1995 |
| 5394453 | Device for measuring the pulse transfer spectrum of elastically scattered X-ray quanta A device for measuring the pulse transfer spectrum of X-ray quanta, includes a polychromatic X-ray source and an energy-resolving detector device for the scattered X-ray quanta. A secondary diaphragm device, arranged between the examination zone in which ... | 02/28/1995 |
| 5373544 | X-ray diffractometer An x-ray diffractometer is equipped with a position sensitive detector and a collimator preceding the detector. The lamellae of the collimator are radially aligned to the specimen, which is arranged in the center of a measurement circle along which the de... | 12/13/1994 |
| 5339347 | Method for microbeam radiation therapy A method of performing radiation therapy on a patient, involving exposing a target, usually a tumor, to a therapeutic dose of high energy electromagnetic radiation, preferably X-ray radiation, in the form of at least two non-overlapping microbeams of radi... | 08/16/1994 |
| 5309911 | Radionuclide angiographic collimator system A gamma ray collimator assembly for use in a cardiac inspection system. A collimator has a plurality of collimator elements with the collimator walls absorbing gamma rays. The collimator walls have a base layer of a first material covered by a layer of a ... | 05/10/1994 |
| 5293417 | X-ray collimator A collimator for use in an imaging system with a radiation point source is formed from a plurality of collimator plates stacked together. Passages in each collimator plate in conjunction with the respective passages in adjoining plates form a plurality of... | 03/08/1994 |
| 5270549 | Annular cylindrical multihole collimator for a radioisotope camera and method of making same An annular cylindrical multihole collimator for a radioisotope camera made by forming a plurality of closed annular radio-opaque plates which may be all corrugated plates or may be half corrugated and half flat, each having at least one collimator segment... | 12/14/1993 |
| 5265144 | X-ray apparatus An X-ray apparatus comprises a polychromatic X-ray source for generating a primary beam of small cross-section, an energy-sensitive detector arrangement for detecting the scattered radiation produced by elastic scattering processes in the primary beam, wh... | 11/23/1993 |
| 5263075 | High angular resolution x-ray collimator A method of producing a high angular resolution collimator implemented in an inspection system for detecting the presence of selected crystalline materials, such as explosives or drugs. The system includes an x-ray source and an array of energy dispersive... | 11/16/1993 |
| 5259016 | Assembly for radiographic imaging An X-ray imaging assembly is disclosed comprised of (I) a front and back pair of intensifying screens, (II) a radiographic element mounted between the intensifying screens, and (III) a collimating grid The front screen being chosen to exhibit modulation t... | 11/02/1993 |
| 5231654 | Radiation imager collimator A collimator for use in an imaging system with a radiation point source has a plurality of channels formed therein along longitudinal axes aligned with selected orientation angles that correspond to the direct beam path from the radiation source to the ra... | 07/27/1993 |
| 5231655 | X-ray collimator A collimator for use in an imaging system with a radiation point source is formed from a plurality of collimator plates stacked together. Passages in each collimator plate in conjunction with the respective passages in adjoining plates form a plurality of... | 07/27/1993 |
| 5231652 | Arrangement for measuring the pulse transmission spectrum of X-ray quanta A first diaphragm arrangement is between a polychromatic X-ray radiator and an examination region for passing a primary radiation beam traversing the examination region on the generated surface of a cone. A detector arrangement comprising several detector... | 07/27/1993 |
| 5198680 | High precision single focus collimator and method for manufacturing high precision single focus collimator A method for manufacturing a single focus collimator in a high precision without increasing a cost for manufacturing. In this method, grooves are on a bulk block member first, and a metallic material having sufficient γ ray shielding property such as lea... | 03/30/1993 |
| 5150395 | Device for examining a test object by means of gamma or X-rays A device for examining a test object (4) by means of gamma or X-rays, comprising a primary X-ray source for generating at least one primary X-ray pencil beam (3) which is directed onto the test object (4), and at least one slit diaphragm (8, 9) which is a... | 09/22/1992 |
| 5099134 | Collimator and a method of producing a collimator for a scintillator A collimator for a scintillator, having a number of through holes formed side by side, each for guiding and passing radiation from one end thereof to an other end and focusing the radiation at a predetermined position, including a frame made of a radiatio... | 03/24/1992 |
| 5060247 | Fluorescent x-ray film thickness gauge A fluorescent X-ray film thickness gauge having an X-ray source for generating incident X-rays, a shutter device for shuttering the incident X-rays, a collimator for collimating the incident X-rays, a sample stage for mounting a sample onto which the coll... | 10/22/1991 |
| 5050200 | Radiation control device with variable active surface Disclosed is a radiology system of the mammography type wherein there is provision for a radiation controller having a detector of X-radiation having gone through the breast to be observed, of the type having a converter of X-radiation into photon radiati... | 09/17/1991 |
| 5016267 | Instrumentation for conditioning X-ray or neutron beams In one embodiment, an x-ray neutron instrument includes an x-ray or neutron lens (10) disposed in a path for x-rays or neutrons in the instrument. The lens (10) comprises multiple elongate open-ended channels (12) arranged across the path to receive and p... | 05/14/1991 |
| 5008911 | X-ray quanta measuring device including diaphragm for producing conical radiation beam on object being measured A device for measuring the pulse transfer of X-ray quanta which are elastically scattered in an examination zone, includes an X-ray source which is arranged on one side of the examination zone, a detector which is situated on the other side of the examina... | 04/16/1991 |
| 5001347 | Focussing collimators for use in rotational camera transaxial SPECT in which the camera head is inclined with respect to the axis of rotation A collimator is designed for use in rotational camera transaxial SPECT in which the camera head is inclined with respect to the axis of rotation. The principal ray of the collimator is offset so that the transaxial plane bisects the angle bounded by the r... | 03/19/1991 |
| 5001737 | Focusing and guiding X-rays with tapered capillaries Apparatus for directing and focusing X-rays by the new method of confinement is disclosed. A capillary having an inlet end and an outlet end with a generally tubular or rectangular inner wall surface defines a longitudinal central opening. The central ope... | 03/19/1991 |
| 4996701 | Method and device for slit radiography In a method for slit radiography a fan-shaped X-ray beam scans a body to form an X-ray shadow image. The fan-shaped beam is formed by a number of sectors situated next to each other. For each sector the transmitted X-ray radiation is controlled instantane... | 02/26/1991 |
| 4969176 | X-ray examination apparatus having a stray radiation grid with anti-vignetting effect In apparatus for radiographic diagnostics an X-ray beam attenuated by an object to be examined is converted into a light image by means of an X-ray image intensifier tube. Inter alia as a result of the geometry of the X-ray beam and of the input screen of... | 11/06/1990 |
