Plural Selectable Patents (Class 378/148)
  • Patent number: 10857385
    Abstract: The present invention relates to the technical field of medical devices. Disclosed is an adjustable collimator, which can solve the problem that existing collimators cannot achieve precise therapy in a small irradiation field. The adjustable collimator comprises a controller and two blade sets arranged opposite to each other; the blade sets comprise a plurality of blades, the controller drives the blades to move so as to form a first irradiation field through which a ray can pass; at least one blade in the blade set is a small irradiation field blade, and at least one irradiation field hole is provided on the small irradiation field blade; the controller is further used to drive the small irradiation field blade to move such that the irradiation field hole becomes a second irradiation field through which the ray can pass, wherein the second irradiation field is smaller than the first irradiation field.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: December 8, 2020
    Assignees: OUR NEW MEDICAL TECHNOLOGIES, WUHAN CYBERMED SYSTEM CO., LTD.
    Inventors: Shiqun Xiao, Haifeng Liu
  • Patent number: 10849576
    Abstract: A method and system is disclosed for acquiring image data of a subject. The image data can be collected with an imaging system with at least two different energy characteristics. The image data can be reconstructed using reconstruction techniques.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: December 1, 2020
    Assignee: Medtronic Navigation, Inc.
    Inventors: David A. Garlow, Elizabeth A. Levasseur
  • Patent number: 10801977
    Abstract: A radiation analyzing apparatus includes a radiation irradiation unit configured to irradiate an object with a first radiation, a radiation detection unit configured to detect a second radiation generated from the object irradiated with the first radiation, a radiation converging unit configured to disposed between the object and the radiation detection unit and to converge the second radiation on the radiation detection unit, a position changing unit configured to vary a relative positional relationship between the radiation converging unit and the radiation detection unit, and a driving unit configured to change the positional relationship.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: October 13, 2020
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Atsushi Nagata, Satoshi Nakayama, Keiichi Tanaka, Kazuo Chinone
  • Patent number: 10794845
    Abstract: X-ray spectrometer comprising an X-ray source emitting X-ray radiation onto a sample, a collimator arrangement for collimating X-ray radiation that has passed through a diaphragm arrangement, the collimator arrangement comprising a modified Soller slit with mutually parallel lamellae forming a plurality of slit-shaped passages, at least a portion of the slit-shaped passages having partition walls aligned substantially perpendicularly to the slit-shaped passages, the partition walls being non-transmissive to X-ray radiation and restricting the transverse divergence of the X-ray radiation passing through the collimator arrangement in a direction transversely with respect to the diffraction plane of the X-ray radiation coming from the sample. Significantly faster spatially resolved measurements can thus be carried out.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: October 6, 2020
    Inventors: Frank Filsinger, Uwe Metka
  • Patent number: 10725381
    Abstract: An optical system (OS) for focusing a beam of radiation (B) on a region of interest in a metrology apparatus is described. The beam of radiation (B) comprises radiation in a soft X-ray or Extreme Ultraviolet spectral range. The optical system (OS) comprises a first stage (S1) for focusing the beam of radiation at an intermediate focus region. The optical system (OS) comprises a second stage (S2) for focusing the beam of radiation from the intermediate focus region onto the region of interest. The first and second stages each comprise a Kirkpatrick-Baez reflector combination. At least one reflector comprises an aberration-correcting reflector.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: July 28, 2020
    Assignee: ASML Netherlands B.V.
    Inventors: Sietse Thijmen Van Der Post, Stefan Michael Bruno Bäumer, Peter Danny Van Voorst, Teunis Willem Tukker, Ferry Zijp, Han-Kwang Nienhuys, Jacobus Maria Antonius Van Den Eerenbeemd
  • Patent number: 10720255
    Abstract: Radiation delivery devices are described herein having compact and lightweight design in comparison to existing architectures. A radiation delivery device comprises a source body including a plurality of radiation sources and a collimator component for directing radiation from the radiation sources to a common focal area, wherein the radiation sources are arranged within the collimator component. In some embodiments, for example, the source body is positioned within an interior cavity of the collimator component.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: July 21, 2020
    Assignee: Clemson University
    Inventors: Xiao Ran Zheng, Endre Takacs, Mark Leising
  • Patent number: 10130366
    Abstract: An automated reloading system for replacing a used end effector is disclosed. Various embodiments include a drive assembly configured to apply a rotary decoupling motion to a used end effector and a rotary coupling motion to a new end effector. An end effector support member is configured to support the new end effector and support and receive the used end effector while defining a decoupling orientation.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: November 20, 2018
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Jerome R. Morgan
  • Patent number: 9950195
    Abstract: The present disclosure discloses a radiotherapeutic system. The radiotherapeutic system comprises a gantry and at least two radiotherapeutic heads disposed to the gantry. The at least two radiotherapeutic heads comprises at least one focused radiotherapeutic head with multi-source and at least one conformal and intensity-modulated radiotherapeutic head.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: April 24, 2018
    Assignee: XI'AN CYBER MEDICAL TECHNOLOGY CO., LTD.
    Inventor: Haifeng Liu
  • Patent number: 9810649
    Abstract: An X-ray fluorescence analyzer includes: a sample stage having a mounting surface on which a sample on which a sample is mounted is mounted; an X-ray source configured to irradiate the sample with primary X-rays and disposed immediately above an irradiation position of the sample; a detector configured to detect fluorescent X-rays emitted from the sample irradiated with the primary X-rays; and a shielding container configured to accommodate the sample stage, the X-ray source, and the detector and includes: a sample chamber configured to accommodate the sample stage; and a door provided at a top of the sample chamber and configured to open and close at least a front half of the sample chamber, wherein the X-ray source and the detector are disposed at a rear half of the sample chamber.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: November 7, 2017
    Assignee: Hitachi High-Tech Science Corporation
    Inventors: Toshiyuki Takahara, Hiroyuki Noda, Ai Masuda
  • Patent number: 9694210
    Abstract: The present invention relates to a multi-purpose radiation therapy system. The radiation therapy system comprises a base, a treatment couch, a rotatable gantry, and at least two radiotherapeutic apparatuses. The treatment couch and the rotatable gantry are arranged on the base. The at least two radiotherapeutic apparatuses include at least one focused radiotherapeutic unit with multi-source and at least one intensity modulated radiotherapeutic unit, and are together installed on the rotatable gantry movably.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: July 4, 2017
    Assignee: CYBERMED TECHNOLOGIES (XI'AN) CO., LTD.
    Inventor: Haifeng Liu
  • Patent number: 9612214
    Abstract: An X-ray fluorescence analyzer includes: a measurement device having: an X-ray source that emits an X-ray; an irradiation area restricting member that restricts an area of a measurement sample to be irradiated with the X-ray as a primary X-ray; and a detector that detects a secondary X-ray generated from the measurement sample. The analyzer further includes: a sample stage that holds and moves the measurement sample between a measurement position at which the measurement sample is irradiated with the primary X-ray to detect the secondary X-ray by the detector and a first retracted position at which the measurement sample is retracted from the measurement position; and a calibration sample moving mechanism that holds a calibration sample for calibrating the measurement device and moves the calibration sample between the measurement position and a second retracted position at which the calibration sample is retracted from the measurement position.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: April 4, 2017
    Assignee: HITACHI HIGH-TECH SCIENCE CORPORATION
    Inventors: Haruo Takahashi, Ryusuke Hirose, Isao Yagi, Toshiyuki Takahara
  • Patent number: 9526919
    Abstract: The present invention relates to a multi-purpose radiation therapy system. The radiation therapy system comprises a base, a movable couch, a rotatable gantry, and a radiotherapeutic apparatus. The movable couch and the rotatable gantry are arranged on the base, while the movable couch is sleeved in the rotatable gantry, and the radiotherapeutic apparatus is movably installed on the rotatable gantry. The radiotherapeutic apparatus includes a multi-source focusing radiotherapeutic unit and an adaptive intensity modulated radiotherapeutic unit. The multi-source focusing radiotherapeutic unit and the adaptive intensity modulated radiotherapeutic unit are distributed at both sides of a rotatable gantry axis, and are connected to the rotatable gantry via respective arc guide rail.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: December 27, 2016
    Assignee: CYBERMED TECHNOLOGIES (XI'AN) CO., LTD.
    Inventor: Haifeng Liu
  • Patent number: 9031203
    Abstract: A system for analyzing a sample is provided. The system includes an optical system capable of providing a one-dimensional beam and a two-dimensional beam. The system may include a beam selection device to select between providing a one-dimensional x-ray beam to the sample in a one-dimensional operation mode and a two-dimensional x-ray beam to the sample in a two-dimensional operation mode.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: May 12, 2015
    Assignee: Rigaku Innovative Technologies, Inc.
    Inventors: Licai Jiang, Boris Verman
  • Patent number: 9020103
    Abstract: A versatile beam scanner for generating a far-field scanned pencil beam, and, alternatively, a far-field pencil beam. An angle selector limits the angular extent of an inner fan beam emitted by a source of penetrating radiation. The source and angle selector may be translated, along a direction parallel to a central axis of a multi-aperture unit, in such a manner as to generate a scanned far-field pencil beam, when rings of apertures are interposed between the source and an inspected target, or, alternatively, a far-field fan beam, when no ring of apertures is interposed.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: April 28, 2015
    Assignee: American Science and Engineering, Inc.
    Inventor: Lee Grodzins
  • Patent number: 9014339
    Abstract: Apparatus for interrupting and/or scanning a beam of penetrating radiation, such as for purposes of inspecting contents of a container. A source, such as an x-ray tube, generates a fan beam of radiation effectively emanating from a source axis, with the width of the fan beam collimated by a width collimator, such as a clamshell collimator. An angular collimator, stationary during the course of scanning, limits the extent of the scan, and a multi-aperture unit, such as a hoop, or a nested pair of hoops, is rotated about a central axis, and structured in such a manner that beam flux incident on a target is conserved for different fields of view of the beam on the target. The central axis of hoop rotation need not coincide with the source axis.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: April 21, 2015
    Assignee: American Science and Engineering, Inc.
    Inventors: Lee Grodzins, Jeffrey R. Schubert, Omar Al-Kofahi, Peter J. Rothschild
  • Patent number: 8884235
    Abstract: A system and method for collimation in diagnostic imaging systems is provided. One collimator includes a plurality of parallel hole segments and a plurality of collimator bores within each of the plurality of parallel hole segments. Additionally, all of the plurality of collimator bores in at least one of the plurality of parallel hole segments have a first pointing direction and all of the plurality of collimator bores in at least one other of the plurality of parallel hole segments have a second pointing direction, wherein the plurality of parallel hole segments are arranged in a fanbeam collimation configuration. Further, the first pointing direction is different than the second pointing direction.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: November 11, 2014
    Assignee: General Electric Company
    Inventors: Floribertus P. M. Heukensfeldt Jansen, Yaron Hefetz
  • Patent number: 8853636
    Abstract: The primary collimator for a radiotherapy apparatus can be made up of several layers, each comprising several apertures, and each layer being moveable so as to select a specific aperture to build up the primary collimator shape. In this way, the shape of the primary collimator can be tailored and/or the beam filters incorporated into the primary collimator assembly. This saves space in the radiation head whilst also allowing filters to be easily interchanged.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: October 7, 2014
    Assignee: Elekta AB (Publ)
    Inventor: Clifford William Perkins
  • Publication number: 20140270075
    Abstract: A system and method is provided for radiation system collimation and design. A plurality of channel waveguide assemblies are provided to be operatively associated with respective beam collimators having varying longitudinal bore diameters. The plurality of channel waveguide assemblies includes a plurality of guides and concentric spacers. The plurality of guides and concentric spacers include varying inner diameters that are configured to be securably nested together by decreasing inner diameters and secured within the longitudinal bores of the respective beam collimators.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventor: Edward Thomas Bender
  • Patent number: 8822934
    Abstract: An automatic collimator changer of a radiation treatment system.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: September 2, 2014
    Assignee: Accuray Incorporated
    Inventors: Sohail Sayeh, Gopinath R. Kuduvalli, Hendricus J. Wolters, Kenneth W. Schulze, Michael J. Stratford-Collins, Monica A. Condit
  • Patent number: 8675820
    Abstract: A device for use with a radiation machine includes a first cone collimator, wherein the first cone collimator has a first end for receiving a radiation beam, a collimating portion for changing the radiation beam, and a second end for emitting an output beam, and wherein the first cone collimator is configured to be detachably coupled to a coupling device that has a plurality of moveable switches, and has one or more engaging portions configured to engage with a first subset of the plurality of switches. A method of using a cone collimator includes receiving a portion of a cone collimator, determining a subset of a plurality of switches that is pressed by the cone collimator, and determining an identity of the cone collimator based on the subset of the plurality of switches that is pressed by the cone collimator.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: March 18, 2014
    Assignee: Varian Medical Systems, Inc.
    Inventors: Dusan Baic, Kevin Greenberg
  • Publication number: 20140016742
    Abstract: The present invention relates to a method and an X-ray apparatus comprising an X-ray source, an x-ray detector, and at least a first collimator having a first active position and a second collimator having a second active position for forming a bundle of X-ray beams, wherein both of said active positions are located in a substantially straight path between said X-ray source and said detector, but at different distances from said X-ray source. The X-ray apparatus further comprises a selector arrangement for switching one of said first or second collimators in said first or second active position, whereby when one of said first or second collimators is in an active position the other collimator is in an inactive position.
    Type: Application
    Filed: October 24, 2011
    Publication date: January 16, 2014
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Daniel Säll, Markus Wahlberg, Mats Danielsson, Torbjorn Hjarn
  • Publication number: 20130329861
    Abstract: A system for analyzing a sample is provided. The system includes an optical system capable of providing a one-dimensional beam and a two-dimensional beam. The system may include a beam selection device to select between providing a one-dimensional x-ray beam to the sample in a one-dimensional operation mode and a two-dimensional x-ray beam to the sample in a two-dimensional operation mode.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 12, 2013
    Inventors: Licai Jiang, Boris Verman
  • Patent number: 8575579
    Abstract: A proton beam collimator comprising (a) titanium or (b) stainless steel containing no tungsten or (c) containing no tungsten or brass. The collimator comprises a multi-leaf collimator (MLC). The apparatus further comprises an integrated circuit (IC) mounted adjacent the collimator, the IC subject to exposure to atomic particles, illustratively, neutrons.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: November 5, 2013
    Assignee: Indiana University Research and Technololgy Corporation
    Inventors: Vadim Moskvin, Chee Wai Cheng
  • Patent number: 8565378
    Abstract: The invention relates to a method and device for operating collimator (1) for limiting a beam of high-energy radiation (2) which, starting from an essentially point-shaped radiation source (3), is directed onto an object (4) to be treated and which is used especially for stereotactic, conformal radiation therapy of tumors, wherein the collimator (1) has an iris diaphragm (5) as a beam-limiting means.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: October 22, 2013
    Assignee: Deutsches Krebsforschungszentrum Stiftung des Oeffentlichen Rechts
    Inventor: Gernot Echner
  • Patent number: 8565376
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, an apparatus having a collimator having at least one aperture and a fluorescence detector. The collimator can be positioned next to a compound. The compound can emit fluorescence X-rays when impacted by an X-ray beam generated by an X-ray source. The collimator can absorb at least a first portion of the fluorescence X-rays emitted by the compound and release at least a second portion of the fluorescence X-rays at the at least one aperture. The second portion of the fluorescence X-rays released by the at least one aperture have known directional information based on a position of the collimator. The fluorescence detector can detect the second portion of the fluorescence X-rays released by the at least one aperture. A three-dimensional (3-D) rendering of an elemental distribution of the compound can be determined from the fluorescence X-rays detected and the directional information. Additional embodiments are disclosed.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: October 22, 2013
    Assignee: The Board of Trustees of the University of Illinois
    Inventor: Ling Jian Meng
  • Patent number: 8536548
    Abstract: A particle beam therapy system that prevents dispersion of a charged particle beam, reduction of the energy thereof, and upsizing of the system and can accurately monitor the opening shape of a multileaf collimator so as to perform high-accuracy particle beam therapy. An image-capturing unit that takes an image of an outer end of a respective downstream side face of a leaf plate is provided for each row of leaves in such a way as to be situated at a position that is at an outer side of an irradiation field; and adjusted in such a way that a foot of a perpendicular line from a viewpoint, of the image capturing unit, to the downstream side face of a leaf plate, is situated at a position that is at an inner side of the position of the outer end when the leaf plate is maximally driven in the departing direction.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: September 17, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Toshihiro Otani, Takeshi Hagino, Koichi Ikuta
  • Patent number: 8525141
    Abstract: In one embodiment, a system for aligning collimators in an imaging system includes a transmitter coupled to a first detector and configured to transmit a beam, and a receiver coupled to a second detector and configured to receive the beam transmitted from the first detector. The alignment system also includes a cart comprising an alignment device with the cart configured to hold at least two collimators. The system includes a control system configured to align the first and second detectors with the at least two collimators using the alignment device.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: September 3, 2013
    Assignee: General Electric Company
    Inventor: Uzi Dror
  • Publication number: 20130170625
    Abstract: An X-ray system is arranged for providing X-ray exposure to a target volume. The aforesaid X-ray system comprises an X-ray source and at least one focusing lens. The provided exposure is distributed over a volume of the target in a substantially uniform manner.
    Type: Application
    Filed: August 18, 2011
    Publication date: July 4, 2013
    Applicant: CONVERGENT R.N.R LTD
    Inventors: Zeev Burshtein, Aharon Bar-David, Zeev Harel
  • Patent number: 8130901
    Abstract: The present invention relates to limiting an x-ray beam used in connection with dental extra oral imaging by a plate mechanism (1) arranged to be operated by a drive mechanism including an actuator (3) arranged to move at least one plate element (2, 3) comprised in the mechanism (1). The plate mechanism (1) includes at least a first and a second plate element (2, 3) which include at least a first slot (12) and a second slot (13), respectively, and said drive mechanism is arranged to directly or indirectly move said first plate element (2) independently of location of said second plate element (3) and said second plate element (3) is arranged to be moved as dependent on the movements of said first plate element (2) only.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: March 6, 2012
    Assignee: Planmeca Oy
    Inventor: Timo Müller
  • Patent number: 8014494
    Abstract: Provided herein are methods and systems for designing a radiation treatment for a subject using single arc dose painting. The methods and systems comprise an algorithm or a computer-readable product having the same, to plan the radiation treatment. The algorithm converts pairs of multiple leaf collimation (MLC) leaves to sets of leaf aperture sequences that form a shortest path single arc thereof where the pairs of MLC leaves each aligned to an intensity profile of densely-spaced radiation beams, and connects each single arc of leaf apertures to form a final treatment single arc. Also provided is a method for irradiating a tumor in a subject using single arc dose painting.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: September 6, 2011
    Assignee: University of Maryland, Baltimore
    Inventors: Cedric X. Yu, Shuang Luan, Danny Z. Chen, Matthew A. Earl, Chao Wang
  • Patent number: 8009807
    Abstract: The invention relates to a radiation screen for an X-ray device, comprising at least one radiation limiting means which is displaceably mounted and is embodied as a diaphragm. According to the invention, the radiation limiting means is displaceably mounted on a plane in a perpendicular manner in relation to a defining bundle of rays, and comprises a plurality of differently shaped diaphragm apertures for continuously limiting the different bundle of rays. It can, for example, be embodied as an essentially rotation-symmetrical perforated disk. In another embodiment, the radiation screen comprises two radiation defining means which are arranged in an overlapping manner in the direction of the bundle of rays which are to be defined.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: August 30, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventor: Robert Petrik
  • Patent number: 7945016
    Abstract: A dental radiology apparatus includes: a generator (18) emitting X-radiation provided with a collimation device collimating the radiation in an appropriate manner using several forms of collimation slits, at least one radiation sensor (20a, 20b) including a first, a second and a third image acquisition surface which are each positioned opposite an appropriate form of slit in order to use the apparatus in panoramic mode, cone beam tomographic mode and mode determining a trajectory which will be used in panoramic mode respectively. In the third mode a form of slit elongated along a plane P is arranged opposite the third surface corresponding to a part of the second surface along a Z-axis perpendicular to the plane P and the assembly is driven in rotation about an axis parallel to the Z-axis.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: May 17, 2011
    Assignee: Trophy
    Inventors: Sylvie Bothorel, Vincent Loustauneau, Jean-Marc Inglese
  • Patent number: 7916834
    Abstract: A hand-held, self-contained x-ray fluorescence (XRF) analyzer produces a small x-ray spot on a sample to interrogate the elemental composition of a sample region of millimeter-size characteristic dimension. The analyzer includes a collimator for aiming an x-ray beam toward a desired location on the sample and for determining the size of the spot produced on the sample. The analyzer may include a digital camera oriented toward the portion of the sample that is, or would be, interrogated by the x-ray spot to facilitate aiming the analyzer. The analyzer may generate a reticule in a displayed image to indicate the portion of the sample that is, or would be, illuminated by the x-ray beam. The analyzer may automatically annotate the image of the sample with text or graphics that contain information about the analyzed sample. The image may be stored in the hand -held analyzer or provided for external storage or display.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: March 29, 2011
    Assignee: Thermo Niton Analyzers LLC
    Inventors: Stanislaw Piorek, Mark Hamilton, Kenneth P. Martin, Pratheev Sreetharan, Michael E. Dugas, Paul Estabrooks, Lee Grodzins
  • Patent number: 7852990
    Abstract: A beam admission unit is disclosed. In at least one embodiment, the beam admission unit includes a plurality of admission segments having at least one admission slit for admitting radiation emanating from a radiation source onto a predetermined admission region. So as to implement a particularly space-saving, robust and reliable design, in at least one embodiment the admission segments are interconnected in an articulated fashion to form an admission plate chain which can be rolled up.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: December 14, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventor: Peter Aulbach
  • Patent number: 7831023
    Abstract: A diaphragm system for an x-ray apparatus for scanning an object is provided. The diaphragm system includes a diaphragm support arranged within a radiation path of an x-ray beam. The diaphragm support includes at least two different individual diaphragms. The at least two different individual diaphragms may be controlled as a function of a definable radiation intensity and/or the size of a surface of the object to be irradiated and can be introduced into the radiation path.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: November 9, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventor: Matthias Wedel
  • Patent number: 7813479
    Abstract: The invention relates to an X-ray device with an X-ray radiation source and with a preferably digital detector, which is placed in the beam path of the radiation source behind the object, particularly behind a patient. Scattered-rays are suppressed by means of a scanning device that scans the object and the detector only in sections. During a half-scanning process, the X-ray image is composed of half images, one image half being faded out.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: October 12, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventor: Philipp Bernhardt
  • Publication number: 20100166150
    Abstract: A radiotherapy apparatus comprises a means for producing a beam of radiation directed along a beam axis and having a width in first and second directions transverse to the beam axis, a multi-leaf collimator for selectively limiting the width of the beam in at least the first direction, a block collimator for selectively limiting the width of the beam in at least the second direction, the block collimator comprising a diaphragm moveable into and out of the beam and having a thickness in the direction of the beam axis that varies. The diaphragm can have a front edge of greater thickness than at least one region behind the front edge. It can also have a spine region extending from a rear part thereof towards the front edge that is greater thickness than at least one region displaced laterally with respect thereto. Together, these can cover the areas that will not be fully shadowed by a dynamically moving MLC.
    Type: Application
    Filed: May 24, 2007
    Publication date: July 1, 2010
    Applicant: Elekta AB (Publ)
    Inventors: Clifford William Perkins, Christopher Charles Knox
  • Patent number: 7723690
    Abstract: Embodiments relate to a slit collimator assembly including a first set of panels spaced at least partially around a longitudinal axis of the collimator assembly and extending generally parallel to the longitudinal axis. The slit collimator assembly further includes a second set of panels spaced at least partially around longitudinal axis of the collimator assembly and extending generally parallel to the longitudinal axis. The first set of panels and the second set of panels are arranged to define one or more slit apertures. The slit collimator assembly is configured so that movement of at least one of the first set of panels or the second set of panels adjusts an aperture size of at least one of the one or more slit apertures. The slit collimator assembly is configured so that gamma rays can pass through the one or more slit apertures, but the remainder of the collimator assembly is substantially gamma ray absorbent. Embodiments also relate to imaging systems and methods of changing collimator performance.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: May 25, 2010
    Assignee: General Electric Company
    Inventors: Jorge Uribe, James William Hugg, Floribertus P. M. Heukensfeldt Jansen
  • Patent number: 7706507
    Abstract: A scanning device for providing a radiation scan to an article is disclosed. The scanning device includes a housing, a transport system and a radiation attenuation system. The housing has a entrance port and an exit port and encloses a radiation analysis unit. The transport system is configured to move the article from the entrance port, through the housing and to the exit port. The radiation attenuation system is supported at one of the entrance port and the exit port. The radiation attenuation system includes at least one substantially rigid panel rotatable relative to the housing and a counter balance coupled to the panel to at least partially offset the weight of the panel.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: April 27, 2010
    Assignee: Smiths Detection Inc.
    Inventors: Adam Williamson, Steven Dowd
  • Patent number: 7672435
    Abstract: A radiation therapy apparatus has a multi-leaf collimator device, a driving gear, a torque wire and a driving unit. The multi-leaf collimator device has a pair of collimator components which respectively comprise a plurality of leaves arranged close to one another such that the leaves face one another across an irradiation axis, and configured to set a desired irradiation field by individually moving the leaves. The driving gear is engaged with a gear tooth of the each leaf, respectively. The torque wire is connected to a shaft center of the driving gear, respectively. The driving unit is configured to drive the driving gears through the torque wire.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: March 2, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventor: Teruo Hashimoto
  • Patent number: 7659530
    Abstract: A focusing and shielding device for encephalic photon knife consisting of a body of ray source, a switch and an armet, the ray source body is a hemispherical shell with certain thickness, a ray source cavity for placing ray source and a pre-collimation hole are defined on the hemispherical shell; the ray source cavity is defined on the outer surface of the hemispherical shell, and the pre-collimation hole is define on the inner surface of the hemispherical shell and connecting with the ray source cavity; the switch is defined inside the body of the ray source, and the outer surface of the switch is in hemispherical shape, a middle collimation hole is set on the switch; the armet is deposited inside the switch, and the inner surface is in columnar shape, an end collimation hole is defined on the armet, a therapy path is defined where the middle collimation hole connected with the pre-collimation hole to form the end collimation hole.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: February 9, 2010
    Inventor: Yanxiong Qiu
  • Patent number: 7580508
    Abstract: A collimator handling system for partially or fully automating the task of replacing and storing collimators in nuclear imaging systems. A collimator server stores a set of different collimators in stacked drawers which may be automatically extracted into the detector. The reduction in time spent on these tasks reduces cost and increases throughput. Furthermore, the automation of handling heavy lead (or like) collimators increases technician safety.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: August 25, 2009
    Assignee: Siemens Medical Solutions, USA, Inc.
    Inventors: Darrell Dennis Burckhardt, Grant Albert, Robert Kasper
  • Patent number: 7470906
    Abstract: Method and apparatus for varying the hole length of a parallel hole collimator, provides a variably configurable compound collimator for use in nuclear imaging. The collimator has a plurality of substantially parallel oriented collimator cores configured for transition between a contracted configuration and an expanded configuration, wherein a gap space between said collimator cores is greater in the expanded configuration than the contracted configuration. The maximum gap space is designed to prevent photons from one hole in the collimator from reaching the detector proximate an adjacent hole of the collimator.
    Type: Grant
    Filed: September 21, 2006
    Date of Patent: December 30, 2008
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: A. Hans Vija
  • Patent number: 7463720
    Abstract: A method for developing a multi-focus primary collimator is described. The method includes extending a first beam from a first source via a collimator block to a first detector and determining a size of the first beam.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: December 9, 2008
    Assignee: GE Security, Inc.
    Inventors: Geoffrey Harding, Johannes Paul Delfs
  • Patent number: 7440550
    Abstract: A collimator is to be provided which permits the reduction of size without using any special material and without sacrificing an aperture. To this end, the collimator comprises: a pair of first plate members each having X-ray absorbability, movable in a direction parallel to a surface thereof, and defining an X-ray passing aperture by a spacing between respective mutually opposed end faces; and a pair of second plate members each having X-ray absorbability, the second block members, in order to block other X-rays than the X-ray passing through the aperture, being connected at respective one ends by hinges to end portions of the pair of first plate members opposite to the mutually opposed end faces of the first plate members and being supported at respective opposite ends so as to be movable obliquely with respect to the moving direction of the first plate members with movement of the first plate members.
    Type: Grant
    Filed: November 20, 2003
    Date of Patent: October 21, 2008
    Assignee: GE Medical Systems Global Technology Company, LLC
    Inventor: Xiaodong Xu
  • Publication number: 20080205599
    Abstract: A radiation therapy apparatus has a multi-leaf collimator device, a driving gear, a torque wire and a driving unit. The multi-leaf collimator device has a pair of collimator components which respectively comprise a plurality of leaves arranged close to one another such that the leaves face one another across an irradiation axis, and configured to set a desired irradiation field by individually moving the leaves. The driving gear is engaged with a gear tooth of the each leaf, respectively. The torque wire is connected to a shaft center of the driving gear, respectively. The driving unit is configured to drive the driving gears through the torque wire.
    Type: Application
    Filed: February 21, 2008
    Publication date: August 28, 2008
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventor: Teruo HASHIMOTO
  • Patent number: 7386097
    Abstract: An X-ray analysis device makes use of a variable aperture for controlling the position and cross section of the X-ray beam. The variable aperture is configured to allow changes in the cross section and/or position of the beam by movement of one aperture component in one direction. In one embodiment, the aperture medium is a perforated disk that is rotated to expose different aperture holes to the beam. In another embodiment, the aperture medium is a perforated tape that is moved in a linear direction to expose different aperture holes to the beam. The tape may be wound about two axes to control its movement, or may be a continuous loop. A cassette may also be used to house the tape.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: June 10, 2008
    Assignee: Broker AXS, Inc.
    Inventors: Gijsbertus J. Kerpershoek, Leendert J. Seijbel, Arjen B. Storm, Arne Kasten
  • Publication number: 20080107239
    Abstract: An automatic collimator changer of a radiation treatment system.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 8, 2008
    Inventors: Sohail Sayeh, Gopinath R. Kuduvalli, Hendricus J. Wolters, Kenneth W. Schulze, Michael J. Stratford-Collins, Monica A. Condit
  • Publication number: 20080101545
    Abstract: The invention relates to a radiation screen (30) for an X-ray device (1), comprising at least one radiation limiting means which is displaceably mounted and is embodied as a diaphragm. According to the invention, the radiation limiting means is displaceably mounted on a plane in a perpendicular manner in relation to a defining bundle of rays (6), and comprises a plurality of differently shaped diaphragm apertures (40 . . . 51, 60 . . . 66) for continuously limiting the different bundle of rays (6). It can, for example, be embodied as an essentially rotation-symmetrical perforated disk. In another embodiment, the radiation screen comprises two radiation defining means which are arranged in an overlapping manner in the direction of the bundle of rays (6) which are to be defined.
    Type: Application
    Filed: June 12, 2006
    Publication date: May 1, 2008
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Robert Petrik
  • Publication number: 20080101544
    Abstract: A method includes receiving x-ray data from a detector, and responding substantially in real time to the received data by controlling an object's exposure to x-rays.
    Type: Application
    Filed: October 19, 2006
    Publication date: May 1, 2008
    Inventors: Scott Richard Wiese, John Scott Price