With Light Projection Patents (Class 378/206)
  • Patent number: 6718008
    Abstract: An x-ray diffraction analysis system provides the automated x-ray diffraction analysis of a plurality of samples in a multiple-cell sample holder. The system includes x-ray source, a detector, a movable sample support and a retractable x-ray shield. The retractable shield is movable between a retracted position, in which optical positioning equipment may be used to locate each sample in the proper testing position, and an extended position, in which stray x-ray energy is blocked. The x-ray energy blocked by the shield includes x-rays diffracted from samples closer to the x-ray source than the sample under test, and x-rays from the source directed toward samples further from the source than the sample under test. Automated movement of the sample support and shield allows for an automated routine to sequentially position each sample, move the shield into the extended position and perform the desired analysis.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: April 6, 2004
    Assignee: Bruker AXS, Inc.
    Inventors: Bob Baoping He, Frank Feng Jin
  • Patent number: 6694169
    Abstract: An embodiment of the targeting system includes a penetrating beam emitter, a penetrating beam receiver, and a targeting assembly. The targeting assembly is adjustable. The targeting assembly has a targeting marker in a path of a penetrating beam provided by the emitter. The targeting marker is at least partially opaque to a penetrating beam emitted by the emitter, and the targeting marker indicates a targeting point on a target axis. The targeting assembly further includes a targeting beam device capable of providing a targeting beam along the target axis.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: February 17, 2004
    Assignee: Minrad Inc.
    Inventors: Kenneth C. Kennedy, II, John C. McNeirney
  • Publication number: 20040022363
    Abstract: A system includes acquisition of first electronic image data representing a phantom located at a first position and irradiated by a first radiation field emitted by a radiation emitter, acquisition of second electronic image data representing the phantom located at a second position based at least on a first light field emitted by a light emitter and irradiated by a second radiation field emitted by the radiation emitter, generation of third electronic image data by correcting the second electronic image data based at least on the first electronic image data, and determination of a deviation between the first light field and the second radiation field based at least on the third electronic image data.
    Type: Application
    Filed: August 1, 2002
    Publication date: February 5, 2004
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventor: Farhad A. Ghelmansarai
  • Patent number: 6669365
    Abstract: A support column holds an X-ray tube having a collimator and is held by a linear guide on a side of a main frame and moved in the longitudinal direction of a table top board by a motor via a gear and a rack. An image receiving system to hold an image intensifier is supported by a linear guide on a side of the main frame and moved in the longitudinal direction of the table top board by a drive mechanism independently from the support column. The table top board can be moved to a position close to the support column on an upper portion of the main frame. When the support column is moved in the longitudinal direction, it is possible for an operator to approach a subject person from an back side portion of the table top board while the operator is being kept in an easy body orientation.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: December 30, 2003
    Assignee: Shimadzu Corporation
    Inventor: Masao Iinuma
  • Patent number: 6647282
    Abstract: An apparatus is provided for aligning a laser beam with a hidden target. In particular, a coupling is rotated which rotates a laser diode and simultaneously translates the diode to produce a spiral shaped laser beam path. The coupling is continuously rotated until it is determined that the beam has become aligned with the target.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: November 11, 2003
    Assignee: GE Medical Systems Global Technology
    Inventor: Steven E. Hair
  • Publication number: 20030185349
    Abstract: Device for non-contact measurement of a distance to a human body at radiotherapy, comprising a moveable radiation head which directs a treatment beam to the tissue area to be treated, a support provided at the radiation head in a defined distance to the beam, the support is provided for distance measuring means directed to a piercing point, in a measuring position the distance measuring means direct a laser beam to a piercing point of the treatment beam on the skin and measures the distance to the piercing point, and evaluation means computing from the measured distance value the distance of the focus of the treatment beam to the piercing point.
    Type: Application
    Filed: March 26, 2003
    Publication date: October 2, 2003
    Inventor: Armin Roeckseisen
  • Publication number: 20030185348
    Abstract: A system for determining congruence of a light field and a radiation field includes acquisition of first electronic image data representing a phantom as illuminated by light emitted by a light emitter, acquisition of second electronic image data representing the phantom as irradiated by treatment radiation emitted by the treatment radiation emitter, and determination of congruence of a light field produced by the light emitter and a treatment radiation field produced by the treatment radiation emitter based on the first electronic image data and the second electronic image data.
    Type: Application
    Filed: March 29, 2002
    Publication date: October 2, 2003
    Applicant: Siemens Medical Solutions USA, Inc.
    Inventor: Farhad Abbasi Ghelmansarai
  • Patent number: 6626569
    Abstract: An image-based quality assurance (IBQA) system is provided for performing quality assurance testing of a medical linear accelerator photon beam. The IBQA system includes an imaging phantom integrated with an automated image analysis system. The imaging phantom comprises a set of fixed and rotatable reference objects which, when radiographed, set the orientation of the phantom, determine magnification factors and measure spatial distortions. The imaging phantom includes a chamber for inserting a radiographic film to record an image of the photon beam. The sampled image is digitized and made available to the automated image analysis system for measuring quality assurance parameters from the sampled image. The measured beam quality parameters are compared with baseline parameter values to determine whether they fall within prescribed specifications.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: September 30, 2003
    Assignee: The Research Foundation of Suny
    Inventors: Lawrence E. Reinstein, Keith Welsh
  • Patent number: 6619839
    Abstract: An X-ray object positioning apparatus for use in X-ray imaging apparatus which irradiates X-rays an object to be examined to produce an X-ray absorption coefficient of a desired region of the object by means of X-rays transmitted through the object. The X-ray object positioning apparatus comprises a chair for fixing and holding the object; an imaging position moving apparatus for relatively moving an X-ray imaging target area relative to the fixed object chair; and display for variably showing the relative positional relation between an object model corresponding to the object and an imaging target area index corresponding to the X-ray imaging target area.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: September 16, 2003
    Assignee: J. Morita Manufacturing Corporation
    Inventor: Takahiro Yoshimura
  • Publication number: 20030161441
    Abstract: An X-ray localizer light system comprises: a long life X-ray localizer light source; an optical concentrator, the light source being situated at a first focal spot, the optical concentrator being configured for concentrating X-ray localizer light from the light source to a second focal spot; and an opaque shield having an aperture therein situated proximate to the second focal spot and being of such a geometrical shape so as to maximize light throughput while meeting light field edge contrast requirements. In another light system, the optical concentrator comprises a reflector comprising a quasi-ellipsoidal portion within which the light source is situated, a cylindrical portion situated between the quasi-ellipsoidal portion and the shield for reflecting stray light, a back reflector portion situated proximate to the shield, and a centrally-mounted portion situated between the aperture and the light source for directing back-reflected light in the direction of the aperture.
    Type: Application
    Filed: February 28, 2002
    Publication date: August 28, 2003
    Applicant: General Electric CRD
    Inventors: Ljubisa Dragoljub Stevanovic, Eugene George Olczak, Frank Jacob John Mueller, Dietmar Karl Sundermann
  • Patent number: 6535573
    Abstract: Handling of a portable an X-ray fluorescence analyzer is simplified by providing in a housing of the X-ray fluorescence analyzer an X-ray source for irradiating primary X-rays onto a sample to be measured located outside the housing, and a light source in the housing for irradiating a visible light beam in the irradiating direction of the primary X-rays, the visible light beam having a different optical axis from the X-rays.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: March 18, 2003
    Assignee: Seiko Instruments Inc.
    Inventor: Shigeki Yagi
  • Patent number: 6527443
    Abstract: A process and apparatus for image-guided treatment of target areas, the process including the steps of: producing at least one x-ray image of a treatment area using an x-ray unit, the image including an x-ray image of a reference structure; mapping the reference structure three-dimensionally via a navigation system; and integrating the mapped data and the x-ray image in a computer unit having a display. The navigation system is capable of mapping operating instruments during surgery so that the mapped data of operating instruments can be output on the display in correct positional relationship with the x-ray image.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: March 4, 2003
    Assignee: BrainLAB AG
    Inventors: Stefan Vilsmeier, Rainer Birkenbach
  • Patent number: 6502984
    Abstract: This invention relates to a radiographic apparatus which comprises a radiographic image photographing unit for photographing a radiographic image of an object irradiated with radiation by a radiation generating device, a distance measuring system for measuring the distances or distance from the radiation generating device to the radiographic image photographing unit and/or the object, and distance information indicating means for indicating distance information obtained by the distance measuring system.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: January 7, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Ogura, Keiichi Kawasaki, Akira Hirai
  • Publication number: 20020196906
    Abstract: A surgical scanning system includes a scanner supported on a carrier movable relative to an operating room table. The carrier engages a guide that is collinear with the long axis of an operating room table. The relative movement between an operating room table and a scanner along a guide decreases the likelihood of collision therebetween. The ability to collect a scan of a patient while on an operating room table increases the likelihood of a successful surgical outcome.
    Type: Application
    Filed: August 22, 2002
    Publication date: December 26, 2002
    Inventors: Inki Mun, Allen B. Kantrowitz
  • Patent number: 6491429
    Abstract: The method concerns automatic guiding a C-arm X-ray device equipped with a motorized exact positioning unit and essentially comprises the steps of: A) determining the position of the plane of projection (2); E) measuring the position and orientation of the reference element (3) at the bone (4) or bone joint; F) referencing the position of the plane of projection (2) to the position of the reference element (3); H) measuring the actual position and orientation of the displaced bone (4); I) determining the deviation between the actual position of the reference element (3) and the position of the reference element (3) as referenced under step F); K) determining the new position of the C-arm X-ray device (1) in order to reset the plane of projection (2) as referenced under step F); and L) guiding the C-arm X-ray device (1) in the new position as determined under step K) by means of automatic controlling means.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: December 10, 2002
    Assignees: AO-Development Institute Davos
    Inventor: Norbert Suhm
  • Patent number: 6478462
    Abstract: The present technique provides a method and system for centering a radiographic imaging system to provide minimal non-diagnostic radiation to a patient. The present technique incorporates a radio-opaque template that is substantially aligned to a light field produced from a light source. The present technique also incorporates a processing module that determines an offset distance from the features of the template to features detectable in data from an x-ray exposure. A processing module determines the offset distance utilizing an algorithm for recognizing the radio-opaque features and determining distances between the features and the detected edges or similar features of the exposure.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: November 12, 2002
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventors: Vincent S. Polkus, Robert M. Stetz, Dale Duemer
  • Patent number: 6473489
    Abstract: Superimposed X-ray and video images can be obtained by acquiring the respective images from the optically equivalent points in space. One or more mirrors may be used to acquire the images and direct them towards the camera. The images can then be combined by warping one onto the other.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 29, 2002
    Assignee: Siemens Corporate Research, INC
    Inventors: Ali Bani-Hashemi, Nassir Navab, Matthias Mitschke
  • Patent number: 6456684
    Abstract: A surgical scanning system includes a scanner supported on a carrier movable relative to an operating room table. The carrier engages a guide that is collinear with the long axis of an operating room table. The relative movement between an operating room table and a scanner along a guide decreases the likelihood of collision therebetween. The ability to collect a scan of a patient while on an operating room table increases the likelihood of a successful surgical outcome.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: September 24, 2002
    Inventors: Inki Mun, Allen B. Kantrowitz
  • Patent number: 6447164
    Abstract: In an X-ray imaging system having a detector and a tube disposed to project an X-ray beam field into the plane of the detector, visual indicators associated with the detector and the X-ray beam field, respectively, are provided for use in aligning the detector and beam field. A computational device is also provided for producing a signal representing offset, caused by X-ray beam angulation, between the geometric center of the beam field and the point at which the central axis of the projected X-ray beam intersects the detector plane. A display device, responsive to the produced signal, enables a system user to compensate for the offset when aligning the detector and beam field.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: September 10, 2002
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventor: Vincent S. Polkus
  • Publication number: 20020114426
    Abstract: The present technique provides a method and system for centering a radiographic imaging system to provide minimal non-diagnostic radiation to a patient. The present technique incorporates a radio-opaque template that is substantially aligned to a light field produced from a light source. The present technique also incorporates a processing module that determines an offset distance from the features of the template to features detectable in data from an x-ray exposure. A processing module determines the offset distance utilizing an algorithm for recognizing the radio-opaque features and determining distances between the features and the detected edges or similar features of the exposure.
    Type: Application
    Filed: February 20, 2001
    Publication date: August 22, 2002
    Inventors: Vincent S. Polkus, Robert M. Stetz, Dale Duemer
  • Patent number: 6435717
    Abstract: The invention relates to an X-ray device, notable a device for X-ray fluoroscopy, which includes an X-ray source and an X-ray detector for the continuous formation of X-ray images of a patient (5) from an invariable position of the X-ray source (2) and the X-ray detector (3). The invention includes indicator means for illuminating and/or monitoring essentially the radiation zone over the patient which is traversed by X-rays. This offers the advantage that for the physician it quasi visualizes or monitors the radiation zone which is traversed by X-rays during a treatment with simultaneous formation of X-ray images so that the physician can make sure that he or she, notably his or her hands, is not inadvertently exposed to a continuous X-ray dose.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: August 20, 2002
    Assignee: Koninklijke Phillips Electronics N.V.
    Inventors: Thomas Köhler, Volker Rasche, Jörg Sabczynski
  • Patent number: 6408045
    Abstract: A stage system includes a first stage movable along a reference plane, containing a vertical direction, and in the vertical direction or in a first direction close to the vertical direction, a second stage movable in a second direction intersecting with the first direction and relative to the first stage, a first driving mechanism for moving the first stage in the first direction, a second driving mechanism for moving the second stage in the second direction, a countermass movable in the first direction, and a third driving mechanism for moving the countermass in a direction opposite to the first direction.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: June 18, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Matsui, Shinji Ohishi, Eiji Osanai, Tadayuki Kubo
  • Patent number: 6404846
    Abstract: A fluorescent X-ray analysis method comprises examining a positional relationship between an image of a sample and an X-ray illuminated region of the sample image, acquiring an image of the sample as a monochromatic image, extracting from the acquired sample image a coincident portion thereof containing the X-ray illuminated region, and examining a luminance change in the extracted image and, where there is a luminance change greater than a reference value, determining whether or not the X-ray illuminated to the sample is partly off the sample.
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: June 11, 2002
    Assignee: Seiko Instruments Inc.
    Inventors: Kiyoshi Hasegawa, Yuuya Sone
  • Patent number: 6370221
    Abstract: The invention relates to a method of setting a position of an object of measurement in layer thickness measurement by X-ray fluorescence in which a beam of an optical recording device is projected into the beam of the X-radiation and in which the surface of the object of measurement is recorded and output as an image comprising a number of image points, with the distance between the surface and the collimator being changed by an absolute amount of a path of movement, with changes in brightness of the image points being recorded in at least one measuring plane during the at least one change of the distance between the surface and the collimator, with the maximum of the difference in brightness of the image points of an image being ascertained after the at least one change of the absolute amount of the distance, and with the distance between the collimator and the object of measurement being set to the position of the ascertained maximum of the difference in brightness.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: April 9, 2002
    Assignee: Helmut Fischer GmbH Institut fur Elektronik und Messtechnik
    Inventors: Karl-Heinz Kaiser, Volker Rössiger
  • Patent number: 6356616
    Abstract: The present invention relates to projection-exposure apparatus for projecting an accurate pattern defined by a reticle onto a substrate and, more particularly, to exposure apparatus used to transfer a circuit pattern on a mask or reticle through a reflection-type imaging apparatus onto a substrate such as a wafer by the mirror-projection method, for example using an X-ray optical system. The exposure apparatus includes an axial-position (e.g., focal point) detection system. Most or all of the components of the axial-position detection system are enclosed in a vacuum chamber along with the projection-optical system of the exposure apparatus. The axial-position detection system of the exposure apparatus of the present invention accurately measures, for example, the axial height of the surface of a substrate. The substrate surface position may then be adjusted to position the surface in the range of the focal depth of the X-ray projection-optical system.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: March 12, 2002
    Assignee: Nikon Corporation
    Inventor: Tetsuya Oshino
  • Patent number: 6345086
    Abstract: The invention provides a system and method for microscopic X-ray fluorescence. An X-ray source, X-ray focusing element and a tapered X-ray opaque focusing aperture provide a focused X-ray spot on a sample. The system translates a sample between an imaging position and a testing position. In the imaging position, the sample is aligned in three dimensions and after alignment, the system automatically translates the sample between the imaging position and the testing position. To avoid collision between the sample and other elements of the system, a position detecting device terminates the sample translation if the sample trips the position detecting device. The focusing aperture of the system has a tapered through opening to block unfocused X-rays and reduce or eliminate a halo effect. To detect low atomic number elements, a detector aperture is vacuum sealed to an X-ray detector and X-ray elements of the system are vacuum evacuated.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: February 5, 2002
    Assignee: Veeco Instruments Inc.
    Inventors: Frank H. Ferrandino, Weimin Si, Douglas S. Holmes, Harvey T. Stone
  • Publication number: 20020012420
    Abstract: Superimposed X-ray and video images can be obtained by acquiring the respective images from the optically equivalent points in space. One or more mirrors may be used to acquire the images and direct them towards the camera. The images can then be combined by warping one onto the other.
    Type: Application
    Filed: September 30, 1999
    Publication date: January 31, 2002
    Inventors: ALI BANI-HASHEMI, NASSIR NAVAB, MATTHIAS MITSCHKE
  • Patent number: 6305842
    Abstract: The invention relates to an X-ray examination apparatus which includes an X-ray source and a diaphragm unit which is connected to the X-ray source and is provided with shutters for limiting a radiation cone beam emanating from the focal spot of the X-ray source, and also includes a light source for generating a light cone beam which traverses the shutters via a mirror. When the dimensions of the light-emitting parts of the light source are significantly larger than the focal spot, the irradiation field irradiated by the radiation cone beam is smaller than the illuminated field illuminated by the light cone beam. In order to match the irradiation field with the illuminated field, the shutters are provided with correction shutters which are transparent to X-rays but impervious to light and limit the light cone beam.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: October 23, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Heinz-Peter Kunert
  • Patent number: 6296990
    Abstract: A gas (air) beating in a ceramic body is made using a separate restriction member to define the air restriction feature. The separate member may be a metal bushing in which an insert is fitted, the insert having an opening defining the actual restriction feature. Alternatively the separate member may be a ceramic plate with restriction features machined by laser or abrasion before or after attachment to the main body.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: October 2, 2001
    Assignee: ASM Lithography, B.V.
    Inventor: Yim Bun Patrick Kwan
  • 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: 6267502
    Abstract: A device and method for verifying positional alignment between a visible light beam and an x-ray beam by providing a radio-opaque body that is to be positioned in the center of the visible light beam in the x-ray field. The image of the radio-opaque body provides an indication of whether the position of the visible light beam is colinear and coincident with the central ray of the x-ray beam of an imaging system.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: July 31, 2001
    Assignee: Minrad Inc.
    Inventors: John C. McNeirney, Michael K. Landi, Thomas C. Koslowske
  • Patent number: 6240158
    Abstract: An X-ray projection exposure apparatus has at least an X-ray source, an X-ray illumination optical system which directs X-rays generated by the X-ray source onto a mask having a prescribed pattern, an X-ray projection focusing optical system which receives X-rays from the mask and projects and focuses an image of the pattern on a substrate. The X-ray projection exposure apparatus further has a mask stage which holds the mask, a substrate stage which holds the substrate, and a position detection optical system which optically detects marks on the mask and substrate. In the X-ray projection exposure apparatus, the projection focusing optical system includes a plurality of reflective mirrors that reflect the X-rays, and at least a portion of the position detection optical system is disposed among the plurality of reflective mirrors.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: May 29, 2001
    Assignee: Nikon Corporation
    Inventor: Tetsuya Oshino
  • Patent number: 6227704
    Abstract: Superimposed X-ray and video images can be obtained by acquiring the respective images from the optically equivalent points in space. One or more mirrors may be used to acquire the images. Alignment of one camera with respect to the X-ray source may be achieved using images of reference points in space. Once the X-ray source and the video camera are positioned at the equivalent point in space, the resultant images can be superimposed through warping.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: May 8, 2001
    Assignee: Siemens Corporate Research, Inc.
    Inventors: Ali Bani-Hashemi, Nassir Navab, Matthias Mitschke
  • Patent number: 6213638
    Abstract: A medical device has a device component that is connected to a mount, which includes elements that can be moved relative to one another in a motorized fashion, and a control and computing unit which controls the motorized relative movements of the elements. A position identification arrangement is allocated to the control and computing unit which supplies signals to permit determination by the control and computing unit of lines in space with different directions, along which the device component can be moved in a motorized fashion, at least indirectly, by the mount.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: April 10, 2001
    Assignee: Siemens Aktiengesellscaft
    Inventor: Manfred Rattner
  • Patent number: 6154522
    Abstract: The present invention is a method, system and apparatus for aiming an x-ray system at the surface of a target object, such that the x-ray beam will strike the surface of the target object at a predetermined angle and direction. A laser is positioned on the surface of the target object, such that the linear beam of light emitted from the laser forms an angle with respect to the surface of the target object corresponding to the predetermined angle and direction at which the x-ray beam is desired to strike the surface of the target object. A mirror is placed on the lens of the x-ray tube. The x-ray lens and the object are then configured such that the laser beam strikes the mirror and is reflected back to the point of origin. The x-ray device is thus aimed such that, when energized, the x-ray beam will strike the surface of the target object at the predetermined angle and direction.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: November 28, 2000
    Assignee: McDonnell Douglas Corporation
    Inventor: Robert C. Cumings
  • Patent number: 6139183
    Abstract: An X-ray exposure system has a mobile X-ray apparatus with an X-ray source and an X-ray receiver that are adjustable relative to a subject for registering successive 2D projections of the subject from different projection directions, an arrangement disposed outside the beam path of the X-ray beam emanating from the X-ray source for directly determining the projection geometries of the X-ray source and of the X-ray receiver at the points in time of the individual 2D projections, and a computer supplied with signals from the arrangement for the direct determination of the projection geometries, which reconstructs 3D images of the subject from the 2D projections.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: October 31, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rainer Graumann
  • Patent number: 6134294
    Abstract: A device for precision X-irradiation of the macular region of the retina of a patient's eye has a mounting plate mounted to a linear accelerator collimator. A housing extends from the mounting plate, and a secondary collimator is positioned in the housing. An elongate aperture extends through the secondary collimator and is in linear alignment with an axis of an X-ray beam emanating from the linear accelerator collimator. A support member extends outwardly from a side of the housing, and an elongate, hollow, sight tube is mounted on the support member. The longitudinal axis of the sight tube aligns with the axis of the X-ray beam so that the axis of the sight tube and the axis of the X-ray beam intersect each other. A light beam is transmitted down the sight tube. The light beam impinges on a cornea of a patient's eye. Light reflected from the cornea is transmitted up the sight tube so that impingement of the light beam on the cornea can be observed through an upper end of the sight tube.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: October 17, 2000
    Assignee: University of Utah Research Foundation
    Inventor: Frederic A Gibbs
  • Patent number: 6120180
    Abstract: X-ray system has an X-ray apparatus on which an X-ray source and an X-ray reception receiver mounted so as to be adjustable relative to an examination subject for registering 2D projections of a region of the subject with subsequent 3D image reconstruction of the region of the subject, the X-ray apparatus carrying transmission and reception devices for acoustic waves or electromagnetic waves for determining projection angles that belong to the individual 2D projections and are required for the 3D image reconstruction, the transmission or the reception devices being co-moved with the X-ray system.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: September 19, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Rainer Graumann
  • Patent number: 6104778
    Abstract: After a target region for an x-ray treatment is determined by a preliminary examination, a line which indicates the position and shape of this target region is marked on the patient's body by projecting a laser beam on such a line. This is accomplished by means of a laser light source and an optical system with two mirrors which are rotatable around mutually transverse axes of rotation. Thus, the region-indicating line can be made visible without causing the brightness of the environment to be reduced.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: August 15, 2000
    Assignee: Varian Systems, Inc.
    Inventor: Simon William Murad
  • Patent number: 6078036
    Abstract: A soft docking system is provided for a medical treatment system, such as an intraoperative electron beam therapy system. The medical treatment system includes a treatment head, an applicator having a fixed position relative to a patient and apparatus for adjusting the position of the treatment head relative to the applicator. The soft docking system includes one or more sensing assemblies for sensing a position of the treatment head relative to the applicator and providing one or more position signals representative thereof, and a display responsive to the position signals for indicating the position of the treatment head relative to the applicator. The position of the treatment head may be adjusted so that the display indicates a desired postion. The docking system may provide an interlock signal to prevent application of the electron beam until the treatment head and the applicator are correctly aligned.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: June 20, 2000
    Assignee: Intraop Medical, Inc.
    Inventors: Thomas A. Cook, George Spalek
  • Patent number: 6048097
    Abstract: In a stationary or mobile C-arm X-ray examination device with isocentric shifting of the C-arm, including rotation around a rotational axis, in order to enable an exact positioning of the patient, a light source is provided at the X-ray examination device which emits a light beam in the direction of the isocenter. For at least one position of the C-arm, the light beam and the rotational axis are assured to coincide, so that the projection of the light beam in a patient correctly identifies the isocenter.
    Type: Grant
    Filed: April 22, 1998
    Date of Patent: April 11, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Udo Heinze
  • Patent number: 6044291
    Abstract: A targeting device for the straight-lined introduction of an instrument into a preferably human body with a movable light source for producing a projection in the targeting direction of the instrument. The piercing location and the directional angle of the piercing is evaluated with the help of a computer tomograph and the piercing location may be marked by a deposit, with a carriage which is traversable along a horizontal guide above the gantry of a computer tomograph and which can be fastened at any point on the horizontal guide. A laser light source is pivotably mounted about a horizontal axis, with an angular scale for indicating the horizontal pivoting angle of the laser light source, the vertical guide is arranged on the first carriage and the second carriage is traversable along the vertical guide and can be fastened at any point on the vertical guide. The laser light source is mounted on the second carriage and is also pivotable about a vertical axis and can be fastened at any pivoting angle.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: March 28, 2000
    Assignee: LAP GmbH
    Inventor: Armin Rockseisen
  • Patent number: 6041249
    Abstract: A computed tomography apparatus is equipped with a device for marking a guide path on a patient for a medical instrument to be used in a medical procedure, such as a puncturing needle. The computed tomography apparatus produces a planning image, and a guide path is identified within the planning image. A computer, using the planning image and the path identified thereon, automatically adjusts a position of a light source, and if necessary a patient table on which a patient is supported, so that a beam from the light source is positioned to coincide with the guide path identified on the image.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: March 21, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Judith Regn
  • Patent number: 6036362
    Abstract: A radiation diaphragm has an arrangement for introducing at least one radiation filter into the beam path of a radiation bundle emanating from a radiation transmitter. A light transmitter is provided for creating a light beam which optically represents the area of the radiation beam. A filter identifier is provided in the diaphragm housing for changing the color of the light beam dependent on whether a radiation filter is located in the radiation beam path. Based on the color of the light beam incident on the examination subject, it is possible to determine whether a radiation filter is located in the radiation beam path, and if so, which filter.
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: March 14, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Schmitt
  • Patent number: 6031890
    Abstract: A monitoring installation for containers and trucks is provided making detection of large items, particularly trucks, at minimal expense possible. An X-ray monitoring installation having low X-ray energy, permits detection of stolen passenger cars, is arranged on a monitoring path.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: February 29, 2000
    Assignee: Heimann Systems GmbH & Co. KG
    Inventors: Rainer Bermbach, Gerhard Donges, Georg Geus
  • Patent number: 6011828
    Abstract: An apparatus and method for aligning a radiosurgery/stereotactic radiotherapy system. The system includes a linear accelerator, including a gantry and a collimator, a couch, and a stereotactic reference system mounted on the couch. The apparatus includes a laser measuring device mounted on the gantry, the laser measuring device having a laser generator element for generating a laser light beam and a laser displacement sensor. The apparatus also includes a reference fixture, attached to the stereotactic reference system, having at least one reflective surface for reflecting the laser light beam to the laser displacement sensor, upon which the laser displacement sensor measures the distance between the reflective surface and the laser measuring device.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: January 4, 2000
    Assignee: Medical Instrumentation and Diagnostics Corporation (MIDCO)
    Inventors: Tyrone L. Hardy, Laura R. D. Brynildson
  • Patent number: 6005909
    Abstract: A method of and operation for controlling the motions of a radiation source (24) and a radiation detector, for example a film cassette (25), in relation to an adjusted slice position, for example a slice level (19), in a linear tomography apparatus without coupling rod, which tomography apparatus includes a table (10) for accommodating an object (18) to be imaged by tomography includes adjustment of a light indicator (17), adjustably mounted on the table (10), to the position of the slice in the object (18), measurement of data indicating the adjusted slice position, application of the measured slice position data to a system control unit (22), and adjustment of the source (24) and the radiation detector (25) in relation to the measured slice position (19) in conformity with the data applied.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: December 21, 1999
    Assignee: U.S. Philips Corporation
    Inventors: Peter Biermann, Wilfried Pfeiffer
  • Patent number: 5967982
    Abstract: An interventionalist or operator uses a variety of apparatus 30 including tools, tool guides, and pointers in a procedure on a region of interest. The region of interest was previously the subject of a diagnostic imaging procedure to generate three dimensional diagnostic image data, selective slices or other portions of which are displayable on video monitors 34. The position of the apparatus 30 in operator space is determined by actuating emitters 32, receiving the emitted signals with receivers 12, and calculating the position of the pointer in operator space. A pair of radio translucent constructions 14, 16 each carry a plurality of radiopaque markers 18 which are positioned adjacent the region of interest. Two or more projection images are taken through the region of interest and the radiopaque markers using a movable x-ray tube 22 and radiation detector 24.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: October 19, 1999
    Assignee: The Cleveland Clinic Foundation
    Inventor: Gene H. Barnett
  • Patent number: 5933472
    Abstract: A slice level display for x-ray systems has a projector arranged next to a patient-support plate which emits light beam directed onto a patient on the support plate, projector being coupled to a drive system in order to displace an x-ray radiator and an exposure cassette, seated under the patient-support plate, oppositely around the light beam axis as a pivot point of their connecting line. The x-ray radiator and the exposure cassette are displaceable via separate drives that are coupled with a control unit having a position sensor associated therewith. The position sensor supplies height position signals of the projector to the control unit which are used to calculate control signals for operating the respective drives for displacing the x-ray radiator and the cassette. The projector and a displacement mechanism therefor and the height position sensor are detachably securable to the patient-support plate as a structural unit.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 3, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventors: Claudius Molz, Paolo Barzaghi, Gerhard Wurzer
  • Patent number: 5930324
    Abstract: An exposure apparatus for exposing a wafer to a mask with radiation light to thereby transfer a pattern of the mask onto the wafer, includes a light emitting portion for emitting the radiation light, a stepper major assembly having a wafer stage portion for holding the wafer and being supported by a supporting system separate from the light emitting portion, an alignment measuring portion for alignment measurement for the wafer and the mask and being supported by a supporting system separate from the stepper major assembly, and a correcting system for correcting attitude of the alignment measuring portion with respect to an optical axis of the radiation light.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: July 27, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Matsui, Ryuichi Ebinuma, Yuji Chiba, Yutaka Tanaka