Irradiating Patents (Class 378/64)
  • Patent number: 10398014
    Abstract: In the present invention, a ferroelectric body is irradiated with ultraviolet light, and the ferroelectric body is caused to stably generate electric potential. A method for radiating charged particles, in which the UV-light-receiving surface of the ferroelectric body that receives UV light and is caused to generate a potential difference is irradiated with UV light having a wavelength not transmitted by the ferroelectric body, and charged particles are radiated from the charged-particle-radiation surface of the ferroelectric body, wherein the UV-light-receiving surface is irradiated with pulses of UV light at a peak power of 1 MW or greater. The pulse width of the UV light is measured in picoseconds (less than 1×10?9 seconds), and the UV pulses can be transmitted by fiber.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: August 27, 2019
    Assignee: BSR CO., LTD.
    Inventor: Toshiyuki Ishida
  • Patent number: 10390777
    Abstract: A transformable imaging system configured to operate in at least two configurations. A first configuration may be open and a second configuration may be closed. The closed configuration may allow for imaging in along an arc greater than 180 degrees.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: August 27, 2019
    Assignee: Medtronic Navigation, Inc.
    Inventors: Clifford M. Risher-Kelly, Ziad F. Elghazzawi, David A. Garlow
  • Patent number: 10361009
    Abstract: A system and method for irradiating a product in order to obtain an irradiated product that has a suitable irradiation dose uniformity ratio and is less expensive and faster than existing systems. The system includes a controller that varies the speed at which a product to be irradiated is moved across a radiation beam. The speed is varied in accordance with a speed function that can be a quadratic function of the distance between a position at which the surface of the product is irradiated and a reference position.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: July 23, 2019
    Assignee: MEVEX CORPORATION
    Inventors: Peter W. A. Brown, David A. Brown, David J. Hepworth, David Macrillo
  • Patent number: 10099068
    Abstract: An X-ray system comprises: a source of an X-ray diverging beam having a central imaging portion and a peripheral treatment-portion; a lens transforming the peripheral treatment portion of the X-ray beam into a converging beam directed to a target; a shutter located between the X-ray source and the target in the central imaging portion of the X-ray radiation; and a detector of imaging radiation after interaction with the target and to provide imaging information of the target.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: October 16, 2018
    Assignee: CONVERGENT R.N.R LTD
    Inventors: Zeev Burshtein, Zeev Harel, Aharon Bar-David, Donald M. Korn
  • Patent number: 10102937
    Abstract: A collimator taking the form of a prolate spheroid (40) comprising radiation attenuating material and featuring a twisted slit comprising radiation transmissive material. The twisted slit featuring first (43) and second (44) apertures arranged such that for each entrance point in one of the apertures there is a direct pathway through the major axis ‘B’ of the prolate spheroid (40), at a pre-determined angle, to a point in the other aperture, such that a compound aperture is formed. For each compound aperture the length of the direct pathway through the prolate spheroid (40) is constant. Rotation of the collimator about the major axis ‘B’, relative to a stationary point at the first aperture (43), steers in angle the compound aperture through the collimator from said stationary point.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: October 16, 2018
    Assignee: The Secretary of State for Defence
    Inventors: Morgan Gregory Carpenter, Robert Michael Moss
  • Patent number: 10022475
    Abstract: Systems and methods are disclosed for body augmentation by mixing hyaluronic acid (HA) with polyvinyl alcohol (PVA) to form an HA-PVA hydrogel; and exposing the HA-PVA hydrogel to one or more freeze-thaw cycles or to an amount of radiation effective to crosslink the HA to the PVA to crosslink the HA to the PVA.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: July 17, 2018
    Inventors: Phi Nguyen, Loc Phan, Bao Tran, Thuan Nguyen, Duy Bui
  • Patent number: 9681845
    Abstract: A method and an apparatus for scanning with a lowered dose are provided. The method includes: determining a dynamic changing model of a prepatient collimator according to a rotation angle of a tube in a scanning mode; in a case that the scanning mode is a normal scan, controlling an opening angle of the prepatient collimator according to the dynamic changing model of the prepatient collimator at an initial stage and an end stage of the normal scan; and in a case that the scanning mode is a scan with phase control, controlling an opening angle of the prepatient collimator according to the dynamic changing model of the prepatient collimator at an initial stage and an end stage of a phase of the scan with phase control.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: June 20, 2017
    Assignee: SHENYANG NEUSOFT MEDICAL SYSTEMS CO., LTD.
    Inventors: Shanshan Lou, Lixia Tong
  • Patent number: 9662512
    Abstract: The invention provides for a medical instrument (200, 300, 400, 500, 502, 600, 700, 702, 800, 802) comprising a LINAC guided by a magnetic resonance imaging system (204). Execution of the instructions by processor to controlling the medical instrument cause the processor to: receive (100) a treatment plan (260) for irradiating the target zone; modify (102) the treatment plan in accordance with an X-ray transmission model of an accessory; acquire (104) magnetic resonance data using the magnetic resonance imaging system; reconstruct (106) a magnetic resonance image (268) from the magnetic resonance data; register (108) a location (272) of the target zone in the magnetic resonance image; generate (110) control signals (274) in accordance with the location of the target zone and the X-ray transmission model; and control (112) the LINAC to irradiate the target zone using the control signals.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: May 30, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Erkki Tapani Vahala, Mika Petri Ylihautala, Tero Jouko Valtter Virta, Romhild Martijn Hoogeveen
  • Patent number: 9586061
    Abstract: An X-ray system comprises: (a) a source providing an X-ray diverging beam having treatment and imaging angular portions; (b) one or more lenses transforming the treatment portion of the X-ray beam into a converging beam directed to a target; (c) a first shutter located between the X-ray source and the target in the imaging portion of the X-ray radiation; the first shutter being selectively openable such that imaging portion of X-ray beam reaches the target; and (d) a detector configured to detect at least a portion of the imaging radiation after the imaging radiation has interacted with the target to provide imaging information of the target.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: March 7, 2017
    Assignee: CONVERGENT R.N.R LTD
    Inventors: Zeev Burshtein, Zeev Harel, Aharon Bar-David, Donald M. Korn
  • Patent number: 9486644
    Abstract: Methods for performing dose determination and cost function gradients in a radiation therapy are disclosed, which include: discretizing a volume-of-interest (VOI) into a set of voxels; identifying a set of beamlets which deposit dose contributions of radiation to the VOI, and each beamlet has a weight factor; transforming the dose contributions into a first domain, and transforming the weight factors into a second domain orthogonal to the first domain; calculate the local derivatives of a cost function of dose and cost function gradients with respect to the weights of the beamlets.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: November 8, 2016
    Inventor: Benjamin Sobotta
  • Patent number: 9424684
    Abstract: A system, method, and computer program product are provided for simulating light transport. In operation, a distribution function is decomposed utilizing a technique for sampling from a probability distribution (e.g. the Alias Method, etc.). Additionally, light transport associated with at least one scene is simulated utilizing information associated with the decomposed distribution function.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 23, 2016
    Assignee: NVIDIA Corporation
    Inventors: Alexander Keller, Ken Patrik Dahm, Nikolaus Binder
  • Publication number: 20150131776
    Abstract: The radiation detector includes image pixels that each includes a counting pixel, to restore an image. The counting pixel includes a radiation absorption layer, which converts incident photons into an electrical signal, and a photon processor that counts a number of the photons, based on the electrical signal.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Min-kook CHO
  • Patent number: 9031200
    Abstract: The disclosure relates to systems and methods for interleaving operation of a standing wave linear accelerator (LINAC) for use in providing electrons of at least two different energy ranges, which can be contacted with x-ray targets to generate x-rays of at least two different energy ranges. The LINAC can be operated to output electrons at different energies by varying the power of the electromagnetic wave input to the LINAC, or by using a detunable side cavity which includes an activatable window.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: May 12, 2015
    Assignee: Accuray Incorporated
    Inventors: Ching-Hung Ho, Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Patent number: 8989846
    Abstract: Systems, methods, and related computer program products for image-guided radiation treatment (IGRT) are described. For one preferred embodiment, an IGRT apparatus is provided comprising a gantry frame including a ring member, the ring member being rotatable around a substantially horizontal, longitudinally extending central axis, the ring member having first and second horizontally opposing ends. The IGRT apparatus further comprises a radiation treatment head coupled to the ring member by an arm member, the arm member being connected to the ring member at an arm member base. Preferably, the IGRT apparatus is further characterized in that the arm member extends outwardly from the first end of the ring member in a direction away from the second end and is supported only by the arm member base, and the radiation treatment head is dynamically movable in at least a longitudinal direction toward and away from the first end of the ring member.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: March 24, 2015
    Assignee: Accuray Incorporated
    Inventors: Gopinath Kuduvalli, Paul D. Treas, Adam J. Weber
  • Publication number: 20150041662
    Abstract: A method for detecting radiation during the examination of a sample (1) comprises the steps of generating the radiation, more particularly X-ray radiation or proton radiation, by means of a source device (10), passing the radiation through the sample (1), and detecting the radiation by means of at least one photoelectric solid-state detector (20) containing a photoconduction section having a predetermined response threshold and a potential well section for taking up free charge carriers. The solid-state detector (20) is a GaN- or GaAs-based semiconductor detector and the potential well section contains a two-dimensional electron gas (2DEG). A setting of the radiation is provided in such a way that the solid-state detector (20) is operated separately from the response threshold of the photoconduction section and in a sensitivity range of the potential well section.
    Type: Application
    Filed: February 15, 2013
    Publication date: February 12, 2015
    Inventors: Stefan Thalhammer, Markus Hofstetter, John Howgate, Martin Stutzmann
  • Patent number: 8938047
    Abstract: A method for planning a treatment session of a patient and optimizing the treatment time for a treatment using a radiation therapy system includes a radiation therapy unit having a fixed radiation focus point. During an optimization of a treatment plan for a patient, a set of shots to be delivered to a plurality of isocenter positions within a target volume of a patient during a treatment session are determined and a beam-on time for each respective sector and state for each isocenter during which radiation is to be delivered are determined based on the treatment plan. For each isocenter position, sectors and states of respective sector are grouped in accordance predetermined rules with respect to beam-on times for respective state of the sectors, wherein sectors and respective states are aggregated for simultaneous delivery of radiation during a predetermined period of time.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: January 20, 2015
    Assignee: Elekta AB (Publ)
    Inventors: Håkan Nordström, Jonas Johansson
  • Publication number: 20150016590
    Abstract: An elongated x-ray tube that can emit a linear curtain of x-rays along its length. Methods of using an elongated curtain of x-rays.
    Type: Application
    Filed: April 30, 2014
    Publication date: January 15, 2015
    Applicant: Moxtek, Inc.
    Inventors: Todd S. Parker, Sanjay Kamtekar, William Hansen
  • Patent number: 8913716
    Abstract: A dose calculation tool operable to generate a variance map that represents a dose uncertainty. The variance map illustrates on a point-by-point basis where high uncertainty in the dose may exist and where low uncertainty in the dose may exist. The dose uncertainty is a result of an error in one or more data parameters related to a delivery parameter or a computational parameter.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: December 16, 2014
    Assignee: TomoTherapy Incorporated
    Inventors: Geoff Sobering, Eric Schnarr, Kenneth J. Ruchala
  • Publication number: 20140328457
    Abstract: A differential phase contrast X-ray imaging system includes an X-ray illumination system, a beam splitter arranged in an optical path of the X-ray illumination system, and a detection system arranged in an optical path to detect X-rays after passing through the beam splitter.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 6, 2014
    Applicant: The Johns Hopkins University
    Inventors: Daniel Stutman, Michael Finkenthal
  • Patent number: 8874187
    Abstract: Treatment targets such as tumors or lesions, located within an anatomical region that undergoes motion (which may be periodic with cycle P), are dynamically tracked. A 4D mathematical model is established for the non-rigid motion and deformation of the anatomical region, from a set of CT or other 3D images. The 4D mathematical model relates the 3D locations of part(s) of the anatomical region with the targets being tracked, as a function of the position in time within P. Using fiducial-less non-rigid image registration between pre-operative DRRs and intra-operative x-ray images, the absolute position of the target and/or other part(s) of the anatomical region is determined. The cycle P is determined using motion sensors such as surface markers. The radiation beams are delivered using: 1) the results of non-rigid image registration; 2) the 4D model; and 3) the position in time within P.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: October 28, 2014
    Assignee: Accuray Inc.
    Inventors: Euan Thomson, John Robinson Dooley, Gopinath Kuduvalli, James Wang, Eric Earnst, Chris Raanes
  • Publication number: 20140294155
    Abstract: A radiography device and a radiography method are specifically adapted for examinations in the field of pediatric radiology. The radiography device examines a diagnosis-relevant region of a patient. The device has a radiation source, which emits radiological rays in an irradiation direction. An irradiation surface is selectable in dependence of a specified examination region of the patient. The radiography device also has a measurement field. The size of the measurement field is changeable such that the size of the measurement field and the size of the irradiation surface correlate.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: JESSICA AMBERG, HAYO KNOOP, GUDRUN ROTH-GANTER
  • Publication number: 20140226788
    Abstract: A method of identifying the material content of an object comprises: providing a radiation source and a radiation detector; irradiating a test object with radiation from the source; collecting at the detector system intensity data for radiation emergent from the test object; resolving the intensity data spectroscopically between a plural set of energy bands; numerically processing the spectroscopically resolved intensity data via the following steps: considering a material attenuation coefficient as a plural set of energy dependent polynomial equations in atomic number with a set of energy dependent coefficients across the said plural set of energy bands; determining a measured attenuation coefficient at each said energy band; calculating therefrom one or more orders of Compound Proton Number and/or effective mass thickness and/or density and for example a Compound Proton Number Set comprising plural order powers and preferably plural higher order powers of weighted compound atomic number.
    Type: Application
    Filed: August 1, 2012
    Publication date: August 14, 2014
    Inventors: Ian Radley, Ben Cantwell, David Edward Joyce, Paul Scott
  • Patent number: 8804911
    Abstract: Isotope identification imaging of nuclear fuel material or explosives concealed in a drum or container in which nuclear reactor fuel or radioactive waste are sealed is realized while ensuring high precision, high reliability, and safety. A sample 31 is irradiated with laser Compton photon beams 21 and 22 generated by a collision between an electron beam 12 and polarized laser light 16 and 20. An isotope in the sample is identified using nuclear resonance fluorescence, and the spatial distribution thereof is imaged. In so doing, a nuclear level of an isotope whose emission direction of nuclear resonance fluorescence is dependent on the planes of polarization of the incident LCS photon beams is used.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 12, 2014
    Assignees: National Institute of Advanced Industrial Science and Technology, Japan Atomic Energy Agency, Kyoto University
    Inventors: Hiroyuki Toyokawa, Ryoichi Hajima, Takehito Hayakawa, Toshiyuki Shizuma, Nobuhiro Kikuzawa, Hideaki Ohgaki
  • Publication number: 20140217287
    Abstract: To provide a semiconductor device and a driving method of the same that is capable of enlarging a signal amplitude value as well as increasing a range in which a linear input/output relationship operates while preventing a signal writing-in time from becoming long. The semiconductor device having an amplifying transistor and a biasing transistor and the driving method thereof, wherein an electric discharging transistor is provided and pre-discharge is performed.
    Type: Application
    Filed: April 8, 2014
    Publication date: August 7, 2014
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventor: Hajime KIMURA
  • Patent number: 8788017
    Abstract: A method of treating a cancerous region in a breast of a patient comprising (i) imaging the breast in a three-dimensional coordinate system, (ii) stereotactically determining the location of the cancerous region in the breast, (iii) optionally determining the volume of the entire cancerous region to be treated, and (iv) while maintaining the breast in a three-dimensional coordinate system that is identical to or corresponds with the three-dimensional coordinate system used in (i), noninvasively exposing the cancerous region of the breast of the patient to a cancer-treatment effective dose of radiation; and equipment for use in such a method.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: July 22, 2014
    Assignees: University of Maryland, Baltimore, Xcision Medical Systems, LLC
    Inventors: Xinsheng Cedric Yu, Ying Su Yu, William Regine
  • Publication number: 20140192958
    Abstract: Methods and an x-ray system for dynamically regulating x-ray dose. An x-ray beam is generated and collimated at a source collimator and detected after the x-ray beam traverses an inspected object. A filter may be dynamically interposed by translation of the filter between a focal spot of the source and the source collimator in such a manner as to maintain the portion of the x-ray beam that traverses the inspected object below a specified limit. Alternatively, an aperture of the source collimator may be varied in size or position relative to the focal spot.
    Type: Application
    Filed: January 2, 2014
    Publication date: July 10, 2014
    Applicant: American Science and Engineering, Inc.
    Inventors: Dan-Cristian Dinca, Martin Rommel, Seth Van Liew, Aleksandr Saverskiy
  • Patent number: 8772742
    Abstract: A radiation therapy system for irradiating a target volume with a particle beam is provided. The radiation therapy system includes a radiation source that is operable to output an adjustable irradiation field that includes a particle beam that is scanned point by point over the target volume. A 3D imaging device may obtain a 3D radiation treatment data set in a radiation treatment phase. An adaptation unit adapts the irradiation field to a change in position and/or shape of the target volume in the radiation treatment phase. The adaptation unit compares the 3D radiation treatment data set with a 3D planning image data set furnished and obtains a transformation that describes the change in position and/or shape of the target volume. The adaptation unit transforms an irradiation field based on the transformation.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 8, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eike Rietzel
  • Patent number: 8627822
    Abstract: The invention comprises a semi-vertical patient positioning, alignment, and/or control method and apparatus used in conjunction with charged particle or proton beam radiation therapy of cancerous tumors. Patient positioning constraints are used to maintain the patient in a treatment position, including one or more of: a seat support, a back support, a head support, an arm support, a knee support, and a foot support. One or more of the positioning constraints are movable and/or under computer control for rapid positioning and/or immobilization of the patient. The system optionally uses an X-ray beam that lies in substantially the same path as a proton beam path of a particle beam cancer therapy system. The generated image is usable for: fine tuning body alignment relative to the proton beam path, to control the proton beam path to accurately and precisely target the tumor, and/or in system verification and validation.
    Type: Grant
    Filed: June 28, 2009
    Date of Patent: January 14, 2014
    Inventor: Vladimir Balakin
  • Publication number: 20140010351
    Abstract: A system for producing a controllable beam of radiation is controllable electronically, and includes no parts that must move relative to one another while in operation to form the beam. The direction and cross-section of the beam may be controlled electronically by controlling an electron beam. Various embodiments provide an X-ray collimator that allows forming a scanning X-ray beam of desired size and flux independently of the aperture material thickness without requiring movement of the aperture or physical components that create the aperture. Some embodiments provide an X-ray collimator that allows forming a scanning X-ray beam of desired size and flux independently of the beam angle.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Inventor: Martin Rommel
  • Patent number: 8619945
    Abstract: Some aspects include a system, medium, and method for receiving an indication of occurrences of a substantially periodic treatment opportunity for a target volume of a patient from a motion detection device, the treatment opportunity being a period of time the target volume is in a position to be irradiated according to a burst mode treatment plan to be administered by a radiotherapy device; determining a future treatment opportunity for a target volume of a patient; beginning synchronization of a prescribed delivery period of burst mode irradiation and the future treatment opportunity; presenting, to the patient, an indication of timing data indicative of a time until the prescribed delivery period of burst mode irradiation will occur; and irradiating the target volume during the synchronization of the future treatment opportunity and the prescribed delivery period of burst mode irradiation.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: December 31, 2013
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventor: Johannes N. Stahl
  • Publication number: 20130343516
    Abstract: A method and an apparatus for filtering radio-frequency electromagnetic beams, in particular x-rays, include a fluid container containing a ferrofluid which at least partially absorbs the electromagnetic beams. A distribution of the ferrofluid within the fluid container can be varied by using an applied magnetic gradient field. An irradiation apparatus and a device for irradiating an object are also provided.
    Type: Application
    Filed: June 26, 2013
    Publication date: December 26, 2013
    Inventors: OLIVER HAYDEN, MANFRED RUEHRIG, FRANK SAUER, REINER FRANZ SCHULZ, SANDRO FRANCESCO TEDDE
  • Publication number: 20130294576
    Abstract: Described herein are devices for converting a broadband x-ray beam to at least one substantially monochromatic x-ray beam. The devices may be an adaptor for existing x-ray machines or for use with a standalone machine. The device 20 includes a shielded housing 22 having an inner cavity and a fluorescent target 26, 26? disposed in the inner cavity 24 wherein the fluorescent target 26, 26? emits at least one substantially monochromatic x-ray beam when exposed to a broadband x-ray beam. The housing 22 includes a first opening 30 in the housing 22 configured to allow the broadband x-ray beam from an x-ray source to enter the inner cavity 24 and irradiate the fluorescent target 26, 26? and a second opening 34 in the housing configured to allow the at least one substantially monochromatic x-ray beam emitted by the fluorescent target to exit the housing 22. Also described herein are sources of monochromatic x-rays 60, 84, 112, as well as diagnostic and therapeutic methods of using of monochromatic x-ray beams.
    Type: Application
    Filed: October 18, 2011
    Publication date: November 7, 2013
    Inventors: Anil K. Pradhan, Yan Yu
  • Publication number: 20130279652
    Abstract: Provided is a measuring apparatus which is capable of measuring the distribution of a specific element in a specimen by soft X rays in a state where there is no effect by a staining agent and the like even though the specimen is composed of living single cells or cell aggregates living as they are, extracted in vitro from an organism. A measuring apparatus using soft X rays includes a connection part which is connected with a soft X ray beam line, a mechanism which light-collects a spot size of soft X rays into a micro beam, and a low vacuum vessel having a measurement chamber in which a specimen is disposed.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 24, 2013
    Applicant: HITACHI, LTD.
    Inventors: Akira NAMBU, Kazuhiro UEDA, Tsuyoshi YAMAMOTO, Hideaki KOIZUMI, Tomihiro HASHIZUME
  • Publication number: 20130259197
    Abstract: An electron gun having: a cathode for emitting electrons; a first Wehnelt electrode equipped with a first aperture through which electrons are allowed to pass; and a second Wehnelt electrode that is equipped with a second aperture disposed at a predetermined position with respect to the cathode and the first aperture, and that is furnished at a position closer to the cathode than the first Wehnelt electrode, wherein: the cathode and the second Wehnelt electrode are included within a single assembly constituting a unitary body; and the assembly is detachably attached to the first Wehnelt electrode. Replacement of the cathode can be performed by detaching the cathode unit from the first Wehnelt electrode, and then ejecting the cathode unit out from the Wehnelt cover. The emitter of the cathode can thereby be reliably positioned with respect to the second aperture.
    Type: Application
    Filed: February 28, 2013
    Publication date: October 3, 2013
    Applicant: Rigaku Corporation
    Inventors: Masaru KURIBAYASHI, Masahiro Nonoguchi, Masashi Kageyama
  • Patent number: 8472584
    Abstract: An apparatus and method for killing pathogenic and non-pathogenic organisms using low-energy x-rays including a shielding assembly that maximizes internal deflections preventing x-rays from escaping the apparatus enclosing an irradiation zone having a passageway between inlet and outlet portions along a conveyor having either a two-level inline or non-linear geometry that continuously moves the articles to be irradiated through the irradiation zone at a first velocity; and an irradiation chamber housing at least one x-ray having a first power level capable of emitting x-rays for a period of time sufficient to provide at least a predetermined dose of radiation to an article and capable of a maximum continuous power output at 100% duty cycle that is selected from within range of from approximately 16 kW to approximately 20 kW to thereby continuously emit low-energy x-rays having energies of from approximately 10 KeV and up to a maximum of approximately 440 KeV.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: June 25, 2013
    Assignee: Ray Fresh Foods, Inc.
    Inventor: John T. Lindsay
  • Patent number: 8471222
    Abstract: A radiotherapy apparatus control method according to the present invention includes: a step S6 of calculating rotational and first translational correction amounts based on a position and orientation of a first region represented by a radioscopic image of a subject; and a step S9 of calculating a second translational correction amount based on a position and orientation of the second region represented by the radioscopic image and the rotational correction amount; and a step S10 of driving a couch so that it rotates by the rotational correction amount and translates by the second translational correction amount. The first region is larger than the second region. According to such a method, the second region can be arranged in a predetermined position at higher accuracy compared with a case where the position of the couch is adjusted by using the position and orientation of only one of the first and second regions.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 25, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanobu Handa, Shuji Kaneko, Noritaka Yanai
  • Patent number: 8457717
    Abstract: Motion artifacts and patient dose during 4D CT imaging are reduced by adaptive control of data acquisition. The respiration signal (310) and CT data acquisition (340) are linked, such that ‘bad’ data from erratic breathing cycles that cause artifacts is not acquired by pausing CT data acquisition (360) when erratic breathing is detected, and not resuming CT data acquisition until steady-state respiration is resumed. Training data is used to develop a tolerance envelope for a respiratory signal such that for erratic breathing cycles the respiratory signal is not within the tolerance envelope (330).
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: June 4, 2013
    Assignee: Stanford University
    Inventors: Paul J. Keall, Jeffrey F. Williamson
  • Publication number: 20130089181
    Abstract: A process of irradiation Sn containing Pb-free solder to mitigate whisker formation and growth thereon is provided. The use of gamma radiation such as cobalt-60 has been applied to a substrate of Sn on copper has been found to change the morphology of the crystalline whisker growth to a more truncated hillock pattern. The change in morphology greatly reduces the tendency of whiskers to contribute to electrical short-circuits being used as a Pb-free solder system on a copper substrate.
    Type: Application
    Filed: October 10, 2011
    Publication date: April 11, 2013
    Applicant: SAVANNAH RIVER NUCLEAR SOLUTIONS, LLC
    Inventors: Elizabeth N. Hoffman, Poh-Sang Lam
  • Publication number: 20130083896
    Abstract: There is provided an apparatus configured to irradiate an object with an X-ray and detect a transmission X-ray transmitted through the object, including: a chamber member defining a first space; and a first supply port arranged in the first space to supply a temperature-controlled gas to a part of an X-ray source configured to irradiate the object with the X-ray.
    Type: Application
    Filed: October 4, 2012
    Publication date: April 4, 2013
    Inventor: Takashi WATANABE
  • Patent number: 8411819
    Abstract: A method for use in a treatment planning process or in a treatment process includes determining a type of critical organ for healthy tissue, and accumulating dose for the healthy tissue based on the type of critical organ. A method for use in a treatment planning process or in a treatment process includes determining a type of critical organ for healthy tissue, and determining a constraint for the healthy tissue, wherein the constraint is determined based on different movement trajectories and the type of critical organ.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: April 2, 2013
    Assignee: Varian Medical Systems International AG
    Inventor: Janne Nord
  • Patent number: 8391570
    Abstract: The present invention relates to a method and an apparatus for guiding an irradiation equipment (2) located outside a human body (1) or an animal body. The method comprises the steps of identifying, in an image (4), a three-dimensional element (7) visible in the image (4), said three-dimensional element (7) has been in position in, or being inserted into, a cavity of the human body (1) or the animal body, establishing, in the image (4), a preliminary position of the three-dimensional element (7) visible in the image (4) in relation to a reference, establishing a preliminary position of the irradiation equipment (2) in relation to the reference, and adjusting the irradiation equipment (2) in response to the position the three-dimensional element (7).
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: March 5, 2013
    Assignee: PNN Medical A/S
    Inventors: Jesper Carl, Henrik Harboe, Erik Othel-Jacobsen
  • Patent number: 8389965
    Abstract: For quarantine treatment of a farming and forestry product for pest control, a method and a device may irradiate logs as a phytosanitary treatment with electron beams. The method may include: spreading the logs; aligning the spread logs to be flush at one end; conveying the spread and flush logs laterally; conveying the logs longitudinally through an irradiation field formed by accelerators to provide treatment of irradiation with the electron beams; throwing the irradiated logs out; and laterally conveying the logs away. The device may include a conveying device for conveying the logs, a shielding structure surrounding the conveying device, and accelerators provided in the conveying path of the conveying device. Two or more accelerators may be provided in centrosymmetry about the conveying path.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: March 5, 2013
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Haifeng Hu, Chuanxiang Tang, Yuanjing Li, Qitian Miao, Huayi Zhang, Junli Li, Zhiqiang Chen, Ming Hu, Ming Huang, Yaohong Liu, Wanlong Wu, Hui Zhang, Shenjin Ming
  • Publication number: 20130051529
    Abstract: A method and system for facilitating the identification and/or authentication of objects, and to a method and system for the marking of objects with an identity and/or as of authentic origin, and a set of objects marked to facilitate subsequent identification and/or authentication are described. The marking comprises incorporating into an object or part thereof or onto a tag mechanically engaged therewith a marker material exhibiting a characteristic radiation interaction response to incident high-energy ionizing radiation from a test source that is known to vary spectroscopically across the spectrum of the source. The presence or otherwise of the marker material may be determined by subsequent interrogation of an object with a suitable radiation source and detector to infer whether an object is of marked identity or origin.
    Type: Application
    Filed: March 11, 2011
    Publication date: February 28, 2013
    Inventors: Arnab Basu, Ian Radley, Max Robinson
  • Patent number: 8363784
    Abstract: A dose calculation tool operable to generate a variance map that represents a dose uncertainty. The variance map illustrates on a point-by-point basis where high uncertainty in the dose may exist and where low uncertainty in the dose may exist. The dose uncertainty is a result of an error in one or more data parameters related to a delivery parameter or a computational parameter.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: January 29, 2013
    Assignee: Tomotherapy Incorporated
    Inventors: Geoff Sobering, Eric Schnarr, Kenneth J. Ruchala
  • Publication number: 20130016813
    Abstract: [Object] The present invention provides an X-ray irradiation device capable of adjusting the energy of X-rays in a wide range, and an analysis device equipped with the X-ray irradiation device. [Solving Means] An X-ray irradiation device according to an embodiment of the present invention focuses X-rays emitted from an X-ray generation mechanism to a predetermined focal position by a focusing mechanism. The X-ray generation mechanism has a structure which generates a plurality of X-rays having different wavelengths. The focusing mechanism has a structure in which the plurality of X-rays are focused to the same focal position by focusing elements having diffraction characteristics suitable for the wavelengths of the respective X-rays generated by the X-ray generation mechanism.
    Type: Application
    Filed: March 30, 2011
    Publication date: January 17, 2013
    Applicants: ULVAC-PHI, INC., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiromichi Yamazui, Keisuke Kobayashi, Hideo Iwai, Masaaki Kobata
  • Patent number: 8340249
    Abstract: Real-Time Dosimetry System, RTDS, is dose measurement system consisting of an ionization chamber and electrometer with the ability to measure, record, and display the high radiation doses required to meet approved standards for sterilization of medical, industrial and food products.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 25, 2012
    Assignee: Best Medical International
    Inventors: Thomas Kraus, Steve Szeglin
  • Publication number: 20120257720
    Abstract: In a charged particle beam analyzer irradiating a charged particle beam to a sample in a vacuum container and detecting an X-ray generated from the sample to analyze the sample, two or more X-ray lenses configured in different manners are provided in the vacuum container. This no longer requires air opening in the vacuum container following X-ray lens replacement and also no longer requires vacuuming, making it possible to perform analysis with high efficiency and high sensitivity.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 11, 2012
    Inventors: Yoshihiro ANAN, Masanari KOGUCHI
  • Patent number: 8284898
    Abstract: The disclosure relates to systems and methods for interleaving operation of a standing wave linear accelerator (LINAC) for use in providing electrons of at least two different energy ranges, which can be contacted with x-ray targets to generate x-rays of at least two different energy ranges. The LINAC can be operated to output electrons at different energies by varying the power of the electromagnetic wave input to the LINAC, or by using a detunable side cavity which includes an activatable window.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: October 9, 2012
    Assignee: Accuray, Inc.
    Inventors: Ching-Hung Ho, Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Patent number: 8280003
    Abstract: A method is proposed for accurate and efficient modeling of head scatter phase space for treatments with dynamic jaws. Specifically, the method enables the efficient calculation of the head scatter phase space in case of a dynamic treatment where jaws and MLC leaves move during the delivery. In one embodiment, the invention can be used to calculate the head scatter contribution during final dose calculation of dynamic treatments. This novel method also enables an accurate calculation of the head scatter contribution from optimal fluence and from jaw positions without having to calculate the leaf sequence. In this embodiment, the invention can be used in optimization of large field IMRT treatments.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: October 2, 2012
    Assignee: Varian Medical Systems International AG
    Inventors: Tuomas Torsti, Sami Siljamaki, Esa Kuusela, Laura Korhonen
  • Patent number: 8238518
    Abstract: A radiotherapy system is disclosed, comprising a support for supporting a patient undergoing radiotherapy treatment, a gantry that is rotatable about an axis, a source of radiation mounted on the gantry and producing a beam of radiation directed towards a target region of the patient, a collimator coupled to said radiation source for collimating said radiation beam, the collimator comprising a plurality of beam-limiting elements, each movable to collectively define a shaped aperture through which the radiation beam passes, a portal imager mounted on the gantry opposite the radiation source for detecting the radiation after it has passed through the patient and generating corresponding images, and associated circuitry for controlling at least the gantry, the source, the collimator, and the portal imager, collating detected data comprising a plurality of images acquired from the imager including images at a plurality of angles of rotation of said gantry and images at a plurality of collimator shapes, and genera
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: August 7, 2012
    Assignee: The Institute of Cancer Research
    Inventors: Gavin George Poludniowski, Michael David Ross Thomas