Patents Examined by Pamela R. Hobden
  • Patent number: 6324252
    Abstract: Non-invasive quantitative plain radiographic evaluation of bone in a bony locale of a body is performed by subjecting the bony locale to a broadband collimated x-ray beam having energy in the range of about 20 keV to 150 keV. Alongside the bony locale is a composite phantom. The composite phantom is comprised of at least two materials, superimposed on one another. An energy-selective multiple-film detector cassette containing at least two films is placed under the body and composite phantom to receive the transmitted x-ray beam. The films in the cassette are developed and digitally scanned to produce sets of composite phantom data and sets of bone data. The data sets are then numerically processed using interpolation whereby to generate the indicated estimate of bone status, namely, bone-mineral density. In an alternative embodiment, an independent measurement is made of the total tissue thickness, and the bone status is determined using interpolation based only on a single film.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: November 27, 2001
    Assignee: CyberLogic, Inc.
    Inventors: Robert S. Siffert, Jonathan J. Kaufman
  • Patent number: 6324253
    Abstract: In the present invention, penetrating radiation (X-rays) is projected by penetrating radiation (X-ray) generating means 14 onto a tablet package 12a. The penetrating radiation (X-rays) is detected by penetrating radiation (X-ray) detecting means 16. Tablet count determining means 18 determines the number of tablets packaged in the tablet package 12a, based on the detection result supplied from the penetrating radiation (X-ray) detecting means 16. Comparing and verifying means 18 extracts from prescription data tablet count data associated with the tablets supposed to be packaged in the tablet package 12a, and verifies whether the tablets are packaged as directed by the prescription data, by comparing the tablet count data with the number of tablets determined by the tablet count determining means 18.
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: November 27, 2001
    Assignee: Yuyama Mfg. Co., Ltd.
    Inventors: Shoji Yuyama, Hiroyasu Hamada
  • Patent number: 6318892
    Abstract: A radiography apparatus is constituted by an image pickup unit including an X-ray source for irradiating cone shaped X-ray beams to a patient under examination and an image receptor disposed opposite the x-ray source for receiving x-ray image data of the patient by the irradiated cone shaped x-ray beam; a cylindrical ring which carries the image pickup unit, defines a sufficient space to receive the patient therein so as to permit relative positional change of the patient with respect to the image pickup unit and is supported so as to permit rotation around its center axis; a second arm, an image pickup unit; a first video image processing unit; a second video image processing unit; and a change-over device which changes-over the x-ray image data obtained from the image pickup unit either to the first video image processing unit or to the second video image processing unit, whereby a three-dimensional x-ray image of the patient is obtained depending on necessity during an IVR while temporarily resting or inte
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: November 20, 2001
    Assignee: Hitachi Medical Corporation
    Inventors: Tsutomu Suzuki, Takaaki Kobiki, Hiroshi Takagi, Nobuhiko Matsui
  • Patent number: 6312156
    Abstract: A reusable comfort enhancing frame for holding an intraoral x-ray film packet is taught which includes four integrally formed side members with a single contiguous perimetric contact surface having a generally rounded cross-sectional configuration and rounded comers. There is a pocket formed in the four integrally formed side members adapted to have the intraoral x-ray film packet inserted and retained therein, and removed therefrom. In one embodiment, there is a slot in one of the four integrally formed side members through which the intraoral x-ray film packet can be inserted to reside in the pocket. In a second embodiment, the pocket is a snap-in pocket comprising at least one lip element projecting from an interior peripheral wall of the four integrally formed side members and at least two snap-fit elements also projecting the interior peripheral wall of the four integrally formed side members.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: November 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Richard W. Bacchetta, Scott H. Schwallie
  • Patent number: 6309101
    Abstract: An intraoral x-ray film packet is taught which includes a perimetric comfort enhancing feature. The intraoral x-ray film packet includes an envelope formed by a first outer sheet having a first generally semicylindrical perimetric element formed therein; a second outer sheet including a second generally semicylindrical perimetric element formed therein, the first and second generally semicylindrical perimetric elements forming a perimetric cushion; and a pair of continuous perimetric seals affixing the first and second outer sheets together, one perimetric seal residing on each side of the perimetric cushion. The packet also includes a film chip residing between the first and second outer sheets. The second outer sheet includes a pair of overlapping sections which are sealed together to form a tab portion to facilitate removal of the envelope after exposure.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: October 30, 2001
    Assignee: Eastman Kodak Company
    Inventors: Richard W. Bacchetta, Scott H. Schwallie
  • Patent number: 6302580
    Abstract: A radiographic imaging system including a solid state x-ray imager is disclosed. An x-ray tube is supported in a vertical x-ray tube support system alternately or in addition to a overhead angulating x-ray tube support system. A solid state x-ray imager is supported in a wall stand alternately or in addition to an angulating table stand. Associated sensors sense the position of the solid state x-ray imager, and a position controller adjusts the position of the x-ray tube such that the x-ray tube is positioned at the center of the solid state x-ray imager. Readout circuitry receives the analog image from the solid state x-ray imager and transmits the corresponding digital information to a digital processor for image creation or manipulation. The digital image may than be displayed on a digital imager acquisition and display system.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: John E. Dwyer, Jr., Jeffrey A. Kautzer, Thomas M. Leeds
  • Patent number: 6304627
    Abstract: Radiographic diagnostic device has a projection unit that is formed as a computer tomography system with a radiation emitter and a line detector, which are constructed such that they can be rotated around a projection area opposite one another. A support apparatus with a support plate for an examination subject is provided. The radiographic diagnostic device has an additional radiation receiver allocated to it so that the additional radiation receiver can be moved from a standby position into a pick-up position for receiving a radiation beam that emanates from the radiation emitter of the computed tomography system. Both computed tomography projections and conventional X-ray projections can be obtained with the radiographic diagnostic device when the additional radiation receiver is realized as a radiographic film, a solid-state detector, or a storage foil.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: October 16, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventor: Heinz Horbaschek
  • Patent number: 6292528
    Abstract: A computer tomograph detector for the detection of electromagnetic radiation transmitted by an object, which detector includes at least one detector row which consists of a plurality of detector elements, each detector element including a scintillator for converting radiation of a first energy level into radiation of a second energy level, as well as a photosensor for converting the radiation into an electrical current, each photosensor being associated with an amplifier element, is extended in such a manner that it can include a plurality of detector rows while the electronic noise is nevertheless reduced and at the same time a higher DQE is obtained; this is achieved by arranging a plurality of photosensors and the associated amplifier elements on the same substrate in integrated semiconductor technique.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: September 18, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Herfried Wieczorek, Josef Lauter, Stefan Schneider
  • Patent number: 6289079
    Abstract: A method of manufacturing an X-ray device is described including the step of coupling a housing that includes diamond to an anode structure that includes diamond. Further, a target metal may be formed on a tip of the anode structure. An X-ray device is also described including a housing made of diamond, a cathode within the housing, and an anode structure that includes diamond. The anode structure may include conductive diamond, while the housing structure may include high resistivity diamond.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: September 11, 2001
    Assignee: Medtronic AVE, Inc.
    Inventors: Victor Ivan Chornenky, Ali Jaafar, Graham Steven Kerslick
  • Patent number: 6285734
    Abstract: The invention relates to a method for defining element contents contained by solid, liquid or slurry-like materials by means of an X-ray fluorescence method in an online analysis. According to the invention a combination of both the energy dispersive (3) and wave dispersive (2) X-ray fluorescence methods are applied in the method, so that by means of the energy dispersive method (3), there are measured such diffraction lines that are located essentially far from each other, whereas by means of the wave dispersive method (2), there are measured such diffraction lines that are located essentially near to each other as well as such diffraction lines where a high resolution and resulting accuracy and sensitivity are required.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: September 4, 2001
    Assignee: Outokumpu Oyj
    Inventor: Christian von Alfthan
  • Patent number: 6282260
    Abstract: A hand holdable inspection device for three-dimensional inspection of a volume distal to a surface. The inspection device has a hand-holdable unit including a source of penetrating radiation for providing a beam of specified cross-section and a detector arrangement for detecting penetrating radiation from the beam scattered by the object in the direction of the detector arrangement and for generating a scattered radiation signal. Additionally, the inspection device has a controller for characterizing the volume based at least on the scattered radiation signal. The detector arrangement includes one or more backscatter detectors that may be disposed asymmetrically with respect to the beam and at differing displacements with respect to the surface.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: August 28, 2001
    Assignee: American Science & Engineering, Inc.
    Inventor: Lee Grodzins
  • Patent number: 6275561
    Abstract: The invention relates to a CT method which involves helical scanning of an examination zone by means of a cone beam. Measuring data for the three-dimensional tomographic imaging of objects of arbitrary length are now acquired completely and without redundancy. The reconstruction requires only a one-dimensional filtering operation. Particularly simple processing steps are enabled by a rebinning operation during which fan beams which are situated in planes extending parallel to one another and to the axis of rotation are combined.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: August 14, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Per-Erik Danielsson
  • Patent number: 6269141
    Abstract: The invention relates to a computer tomography apparatus in which the scanning trajectory is shaped as a helix and a conical radiation beam traverses the examination zone. According to the invention, the dimension of the detector window (or the part thereof which is used for the reconstruction) is a factor of 3, 5, 7 . . . larger than the distance between neighboring turns of the helix. Using this geometry, each voxel in the examination zone is irradiated exactly from an angular range of 3&pgr;, 5&pgr;, 7&pgr; . . . when it traverses the cone beam. Such data acquisition yields an improved image quality.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: July 31, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Roland Proksa, Jan Timmer
  • Patent number: 6267503
    Abstract: X-ray positioning apparatus is described for aligning an x-ray imaging device (16) relative to a patient (10) to permit the operator to select and obtain an x-ray image from a selected anatomical region. A plurality of light reflective markers (14) is located on the patient's body to define certain anatomical landmarks. The apparatus comprises an x-ray source (20) and a separate light source (30) and an image sensor (33). Light reflected from the markers are detected by the image sensor (33). The image data is processed by an image processing system (46) which provides a variety of functions including determining the actual position the image device should be located to obtain the desired image. Embodiments of the invention are described.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: July 31, 2001
    Assignee: Glasgow Caledonian University Company Limited
    Inventor: Margot McBride
  • Patent number: 6269145
    Abstract: In accordance with the present invention, a compound refractive lens for focusing, collecting and collimating x-rays comprising N individual unit lenses numbered i=1 through N, with each unit lens substantially aligned along an axis such that the i-th lens has a displacement ti orthogonal to said axis, with said axis located such that the sum of the displacements ti equals zero, and wherein each of said unit lenses comprises a lens material having a refractive index decrement less than 1 at a wavelength less than 100 Angstroms.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: July 31, 2001
    Assignee: Adelphi Technology, Inc.
    Inventors: Melvin A. Piestrup, Richard H. Pantell, Jay T. Cremer, Hector R. Beguiristain
  • Patent number: 6264365
    Abstract: A monitoring apparatus analyzes detector data from a CT system to detect a signature of a bad detector. The apparatus generates a plurality of Helgason-Ludwig condition values from the detector data. The generated values are processed to generate a comparison value, which is compared to a predetermined threshold value. A warning message may be generated when the comparison value exceeds the predetermined threshold value, the warning message alerting an operator to the likely presence of a bad detector. In one embodiment, the generated values are further analyzed to generate an estimate of the position of the bad detector. In a preferred embodiment, the comparison value is a matrix norm of a matrix generated from the Helgason-Ludwig condition values.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: July 24, 2001
    Assignee: General Electric Company
    Inventor: Sarah Kathryn Patch
  • Patent number: 6264364
    Abstract: A medical x-ray system, such as an angiography system has an x-ray tube that emits and a radiation receiver, which are arranged at a C-arm, a stand supporting the C-arm, which has an arm that is rotatably mounted at one end around a stationary axis, and a holding device supporting the C-arm, which is rotatably mounted at the other end of the stand, and a patient table The stand is mounted via its arm at the ceiling and is mounted such that the rotational axis of the arm is arranged substantially in alignment with the center line of the patient table.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: July 24, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Pflaum, Ewald Popp
  • Patent number: 6263043
    Abstract: A medical examination system which allows the production of x-ray exposures in the context of an MR examination without re-situating the patient has a solid-state radiation detector integrated in the patient bed of an MR apparatus, and an adjustably mounted x-ray source with the further x-ray system components being allocated thereto.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: July 17, 2001
    Assignee: Siemens Aktiengesellschaft
    Inventor: Michael Maschke
  • Patent number: 6256373
    Abstract: An x-ray fluorescence instrument for measuring the presence of lead in a sample. The lead is bombarded with gamma rays from a source thereof and in turn, emit x-rays. The x-rays are detected by a scintillation detector which emits photons that are directed to a photomultiplier tube which provides signals to an electronic processor including multichannel analyzers to provide output signals representative of the lead present in the sample. The instrument includes a cone plug disposed between the gamma ray source and the detector to prevent gamma rays from directly striking the detector.
    Type: Grant
    Filed: August 16, 1999
    Date of Patent: July 3, 2001
    Inventors: Karl Bernstein, Charles C. Kidd
  • Patent number: 6252243
    Abstract: A stimulable phosphor sheet giving a high sensitivity and a high sharpness in a radiation image recording and reproducing method is composed of a partition containing a phosphor that emits a light in a UV or visible region upon absorbing the applied radiation which divides the phosphor sheet on its plane into small sections, and stimulable phosphor-incorporated area which is divided with the partition and which has a reflectivity to stimulating rays differing from a reflectivity to the stimulating rays of the partition.
    Type: Grant
    Filed: September 17, 1999
    Date of Patent: June 26, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuji Isoda, Kenji Takahashi, Yasuo Iwabuchi, Hiroshi Matsumoto, Katsuhiro Kohda, Seiji Tazaki