Variable Patents (Class 378/150)
  • Patent number: 11295871
    Abstract: The disclosure provides a collimator assembly, comprising at least at least two collimators configured to be moveable relative to each other such that the collimator assembly is switchable between at least two collimation modes; in respective collimation modes, the at least two collimators are superposed with each other in a thickness direction of the collimator assembly, such that the collimator assembly presents different combined patterns for collimating and shielding rays incident onto the collimator assembly and that the collimator assembly has corresponding ray shielding thickness for effectively shielding rays.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: April 5, 2022
    Assignee: Nuctech Company Limited
    Inventors: Hanping Li, Yuecheng Hu, Kun Zhao
  • Patent number: 11259762
    Abstract: A system and method relating to a radiation based imaging are provided. The system may include a radiation source, a detector and a first grid. The detector may include a plurality of detector cells. The first grid may be located between the radiation source and the detector cells and the first grid may include a plurality of radiation transmitting sections. At least one of the plurality of detector cells may include an active area which may be configured to receive radiation from the radiation source that passes through at least one of the plurality of radiation transmitting sections of the first grid. The active area may be adjustable by adjusting the first grid. The radiation source, the first grid and the detectors cells may be operatively coupled for detecting an object. The method may include adjusting the first grid to adjust the active area of the detector.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: March 1, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventor: Hongjun Zhang
  • Patent number: 11221564
    Abstract: A method of operating an illuminator and apparatus thereof are proposed. A method includes: directing a radiation beam to the illuminator comprising slit fingers; sensing a temperature value of each of the slit fingers; determining a shifting value of the respective slit finger based on the temperature value; causing the respective slit finger to move according to the shifting value to form a light slit from the radiation beam; and exposing a workpiece using the light slit.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 11, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chao Pei Lu, Yung-Yao Lee
  • Patent number: 11217428
    Abstract: Provided is a multi charged particle beam writing apparatus including: an emission unit emitting a charged particle beam; a restriction aperture unit having a first opening having a variable opening area, the restriction aperture unit shielding a portion of the charged particle beam; a shaping aperture array substrate having a plurality of second openings, the shaping aperture array substrate forming multiple beams by allowing the shaping aperture array substrate to be irradiated with the charged particle beam passing through the first opening and allowing a portion of the charged particle beam to pass through the plurality of second openings; and a blanking aperture array substrate having a plurality of third openings, each beam of the multiple beams passing through the plurality of third openings, the blanking aperture array substrate being capable of independently deflecting each beam of the multiple beams.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: January 4, 2022
    Assignee: NuFlare Technology, Inc.
    Inventors: Mitsuhiro Okazawa, Hirofumi Morita
  • Patent number: 11135450
    Abstract: The present disclosure falls into the field of medical apparatus, and discloses a radiation therapy apparatus and a beam imaging method, wherein the radiation therapy apparatus includes: a treatment head including multiple radiation sources distributed on one side of a target region, radiation beams emitted by the multiple radiation sources intersecting in the target region, and a lesion being located within the target region; a beam detector used for receiving a radiation beams passing through the lesion and emitted by the radiation sources to acquire projection data of each radiation beam passing through the lesion, and generating a slice image of the lesion according to the acquired projection data; and a processor used for constructing an image of the lesion in the target region based on the slice image generated by the beam detector.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: October 5, 2021
    Inventors: Hao Yan, Jinsheng Li
  • Patent number: 11058895
    Abstract: Provided is a collimator including a base unit configured to form a radiation path of light; a pair of first moving members rotatably installed in the base unit; a pair of second moving members movably installed in the base unit; and an actuator configured to externally receive power and transmit the power to the first moving members and the second moving members, wherein a first space may be formed between the first moving members, a second space may be formed between the second moving members, and the light may pass through a radiation area corresponding to an overlapping area of the first space and the second space.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 13, 2021
    Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Pyung Hun Chang, Erkin Gezgin
  • Patent number: 10983243
    Abstract: A human body security inspection apparatus, a method of operating the same, and an associated filter device are disclosed. The human body security inspection apparatus includes a radiation beam exit configured for emitting a radiation beam; a beam guiding box configured for guiding the radiation beam; and a filter device configured between the radiation beam exit and the beam guiding box. The filter device includes a housing and a filter cage having a central axis. The filter cage is formed by arranging two or more pairs of filtering sheets, which are made of different materials and/or have different thicknesses, in an encircling way. The filter cage is rotatable about its central axis such that at least one pair of filtering sheets is capable of filtering the radiation beam to adjust an outputted dosage of the radiation beam of the human body security inspection apparatus.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: April 20, 2021
    Assignees: TSINGHUA UNIVERSITY, NUCTECH COMPANY LIMITED
    Inventors: Zhiqiang Chen, Yuanjing Li, Ziran Zhao, Wanlong Wu, Ming Ruan, Yingkang Jin, Guangwei Ding, Zongjun Shen, Jiajiang Zhao
  • Patent number: 10974071
    Abstract: An apparatus includes a first multileaf collimator comprising a plurality of pairs of beam-blocking leaves each comprising an end portion. The end portions of beam-blocking leaves of two adjacent pairs are configured to collectively form an aperture when the two adjacent pairs of beam-blocking leaves are closed. The aperture may be sized and shaped to allow a radiation beam to pass through for radiosurgery.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: April 13, 2021
    Assignee: Varian Medical Systems, Inc.
    Inventors: Corey Zankowski, Sasa Mutic
  • Patent number: 10959686
    Abstract: An apparatus comprising a radiation source, coincident positron emission detectors configured to detect coincident positron annihilation emissions originating within a coordinate system, and a controller coupled to the radiation source and the coincident position emission detectors, the controller configured to identify coincident positron annihilation emission paths intersecting one or more volumes in the coordinate system and align the radiation source along an identified coincident positron annihilation emission path.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: March 30, 2021
    Assignee: RefleXion Medical, Inc.
    Inventor: Samuel Mazin
  • Patent number: 10806420
    Abstract: A computer tomograph (1) for mammographic x-ray imaging includes a MBFEX tube (20) and a flat-bed x-ray detector (30). Cathodes (40) are arranged in a fixed manner in rows in the MBFEX tube (20), the cathodes (40) being provided for the field emission of electrons. Geometry, radiation density and wavelength range of an x-ray beam (b) can be set. The MBFEX tube (20) is movable parallel (z) to the flat-bed x-ray detector (30). The flat bed x-ray detector (30) includes a moveable x-ray screen (31), the opening of which can be set. Using the x-ray screen (31), an imaging area (A) on the detector surface (D) of the flat-bed x-ray detector (30) can be selected and moved. Compared to conventional computer tomographs having rotating x-ray components, the computer tomograph (1) has a lighter and more compact design, with which a particularly small focal spot size is achieved.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: October 20, 2020
    Assignee: ESSPEN GmbH
    Inventor: Zahra Mohammadi
  • Patent number: 10758748
    Abstract: A method includes determining a first estimate of leaf positions for a plurality of leaves of a multi-leaf collimator (MLC) in a reference coordinate space based on an image generated by an image-based aperture verification system, wherein the leaf positions for the plurality of leaves define an aperture for the MLC. The method further includes determining a second estimate of the leaf positions for the plurality of leaves in the reference coordinate space based on data from an additional source. The method further includes verifying the leaf positions for the plurality of leaves based on comparing the first estimate to the second estimate, wherein the leaf positions are verified if the first estimate deviates from the second estimate by less than a threshold value.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 1, 2020
    Assignee: Accuray Incorporated
    Inventors: Jonathan Cecil Chappelow, Petr Jordan, Calvin Maurer, Sarbjit Singh, Andrew W. Fitting, Andriy Myronenko, Jian Gao
  • Patent number: 10716523
    Abstract: An X-ray imaging apparatus includes an imaging device that captures a camera image of a target, a controller that stitches a plurality of X-ray images of a plurality of divided regions to generate one X-ray image of the target, and a display that displays a settings window providing a graphical user interface for receiving a setting of an X-ray irradiation condition for the divided regions, and displays the camera image in which positions of the divided regions are displayed.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: July 21, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Jun Lee, Ju Hwan Kim, Se Hui Kim, Seung-Hoon Kim, Si Won Park, Phill Gu Jung, Duhgoon Lee, Myung Jin Chung, Do Hyeong Hyeong Hwang, Sung Jin Park
  • Patent number: 10617885
    Abstract: Systems and methods for low energy radiation x-ray radiation therapy system for use at a target within a cavity of a subject. In an aspect, the system uses an aperture shaping device used to shape the radiation beam from the low energy radiation source. In an aspect, the aperture shaping device includes a plurality of leaf assemblies which include leaves configured to form the aperture and engage the radiation beam. In an aspect, the present invention utilizes a geared mechanics approach to create an aperture using only one dial input. The design ensures that the field size of the collimator remains a constant shape as it is opened and closed. In an aspect, the overall size of the collimator may be scaled to accommodate various radiation therapy requirements.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: April 14, 2020
    Assignee: University of Iowa Research Foundation
    Inventors: Ryan Flynn, Junyi Xia, Timothy J. Waldron, Yusung Kim, Bryan G. Allen, Brennen N. Wears, Hongtao Ding
  • Patent number: 10517547
    Abstract: A diaphragm apparatus for the collimation of an X-ray bundle of an X-ray device is provided for scanning an examination object. An X-ray device including the diaphragm apparatus is also provided. In an embodiment, the diaphragm apparatus includes two diaphragms in the form of slotted diaphragms arranged in series in the direction of the X-rays and mounted to be positionable with respect to one another. Each of the diaphragms includes a fixed diaphragm aperture corresponding to maximum collimation of the X-ray bundle and a region that is impermeable to X-rays, which in each case includes an extension corresponding to the diaphragm aperture corresponding to the maximum collimation.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: December 31, 2019
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventors: Rainer Raupach, Michael Grasruck, Nicole Haag
  • Patent number: 10510456
    Abstract: The present disclosure relates to a collimator. The collimator may include a motor, a transmission unit having a first end and a second end, and a leaf unit having a leaf. The first end of the transmission unit may be connected to the motor and the second end of the transmission unit may be connected to the leaf. The present disclosure also relates to a collimator system. The collimator system may include a leaf module having a leaf, a driving module having a motor configured to drive the leaf, and a processing module to generate a movement profile of the leaf. The movement profile of the leaf may include a first speed during a first stage, a second speed of the leaf during a second stage, and a third speed of the leaf during a third stage.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: December 17, 2019
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Jian Zhang, Xiaolong Liu, Xiao Fang, Hui Zhou, Hui Yin, Xu Chao, Jian Liu
  • Patent number: 10504634
    Abstract: In a method and device for setting a spatial intensity distribution of an X-ray beam, an X-ray beam is generated by an X-ray tube. A beam path of the X-ray beam is guided in a direction of propagation by a form filter including a plurality of lamella plates which taper to a focal point such that, for each of the lamella plates, at least one straight line running through the respective lamella plate and forming a first direction of the lamella plate is aligned with the focal point. The first directions of the lamella plates of the form filter are aligned relative to the beam path. As a result of the alignment, parts of the X-ray beam are absorbed. Finally, the spatial intensity distribution of the X-ray beam is set in the direction of propagation by the absorption due to the lamella plates.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: December 10, 2019
    Assignee: SIEMENS HEALTHCARE GMBH
    Inventor: Karl Stierstorfer
  • Patent number: 10376225
    Abstract: A scanning X-ray imaging device (100) is proposed. The device may be specifically adapted for mammography applications. The device comprises an X-ray source (110), an X-ray line detector (150), a field limiter arrangement (170) and an observation volume (135). The field limiter arrangement (170) comprises at least two variable shield plates (174, 175) enclosing an opening (176) and a displacing mechanism (177). The shield plates may be displaced with respect to a center axis of an X-ray beam (115) by means of the displacing mechanism such as to vary at least one of a cross-section and a location of the opening (176) between the field plates (174, 175) through which at least a part of the X-ray beam (115) is transmitted. The shield plates may be displaced independently from each other by means of the displacing mechanism (177).
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: August 13, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Per Mattias Myrman
  • Patent number: 10367403
    Abstract: Techniques for independent motion actuator are described herein. The techniques may include a first linear actuator, a first driven carriage to be driven by movement of the first linear actuator, and a first free carriage in line with the first linear actuator but being disengaged from the first linear actuator. The techniques may also include a second linear actuator substantially parallel to the first linear actuator. A second driven carriage is to be driven by movement of the second linear actuator, and a second free carriage in line with the second linear actuator but being disengaged from the second linear actuator and to be coupled to the first driven carriage.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: July 30, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Nicholas Demianovich
  • Patent number: 10296199
    Abstract: A method and system for acquiring, processing, storing, and displaying x-ray mammograms Mp tomosynthesis images Tr representative of breast slices, and x-ray tomosynthesis projection images Tp taken at different angles to a breast, where the Tr images are reconstructed from Tp images.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: May 21, 2019
    Assignee: Hologic, Inc.
    Inventors: Nikolaos Gkanatsios, Loren Niklason, Ian Shaw, Christopher Ruth, Andrew P. Smith, Jay A. Stein
  • Patent number: 10188873
    Abstract: A first dose calculated using a first set of fluence maps and a first (faster) dose prediction model is accessed. A second fluence map is accessed. The second fluence map is projected onto the first set of fluence maps to deter me set of scalars and a residual value. When the residual value satisfies a criterion, a second dose is calculated using the first dose prediction model, the set of scalars, and the second fluence map. When the residual value does not satisfy the criterion, the second dose is calculated using a second (more accurate) dose prediction model and the second fluence map.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: January 29, 2019
    Assignee: Varian Medical Systems International AG
    Inventors: Esa Kuusela, Janne Nord, Joakim Pyyry, Perttu Niemela
  • Patent number: 10016171
    Abstract: A radiological imaging device including a gantry defining an analysis zone in which at least a part of the patient is placed, a source suitable to emit radiation, and a detector arranged to receive the radiation and to generate data signals based on the radiation received. The device also includes a horizontal gantry rotation apparatus having a ring to which the source and the detector are mounted and a rotational bearing member configured to rotate the ring. Also included is a control unit adapted to acquire an image from data signals received from the detector while the horizontal gantry rotation apparatus rotates the ring to scan the patient. The radiological imaging device can include at least one of a vertical gantry rotation apparatus, a lifter system, a roller support system, a cooling system, a source tilting device, and a translational apparatus configured to translation a position of the detector.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: July 10, 2018
    Assignee: Epica International, Inc.
    Inventors: Damiano Fortuna, Leonardo Manetti, Luca Ferretti, Denis Mattia De Micheli
  • Patent number: 9991014
    Abstract: The preferred embodiment of the disclosed invention comprises rotary actuators that move one or more x-ray attenuating plates in the x-y plane (ie. image plane). These x-ray attenuating plates attenuate the x-ray beam with thin metal sheets or plates that contain one or more apertures, which fully exposes the desired region of interest (ROI) while filtering the rest of the image, reducing the radiation exposure for the procedure. The devices will typically have a selection of many attenuation profiles. A small aperture or low attenuation profile region will result in a higher total exposure reduction and a large aperture or large attenuation profile will result in a smaller exposure reduction. The x-ray attenuating plate can be rotated to select an attenuation profile using a detent wheel.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: June 5, 2018
    Inventor: Daniel Gelbart
  • Patent number: 9966161
    Abstract: A method and mechanical design for a thin-film diamond crystal mounting apparatus for coherence preservation x-ray optics with optimized thermal contact and minimized crystal strain are provided. The novel thin-film diamond crystal mounting apparatus mounts a thin-film diamond crystal supported by a thick chemical vapor deposition (CVD) diamond film spacer with a thickness slightly thicker than the thin-film diamond crystal, and two groups of thin film thermal conductors, such as thin CVD diamond film thermal conductor groups separated by the thick CVD diamond spacer. The two groups of thin CVD film thermal conductors provide thermal conducting interface media with the thin-film diamond crystal. A piezoelectric actuator is integrated into a flexural clamping mechanism generating clamping force from zero to an optimal level.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: May 8, 2018
    Assignee: UChicago Argonne, LLC
    Inventors: Deming Shu, Yury Shvydko, Stanislav Stoupin, Kwang-Je Kim
  • Patent number: 9931088
    Abstract: A method is disclosed for displaying a selected acquisition field of view of a medical tomography apparatus in the region of a patient table of the tomography apparatus with the aid of an illumination device including at least one light source. In this regard, the illumination device includes at least one setting device for revealing and/or masking boundary areas of a field of illumination of the illumination device which are revealed or masked as a function of the selected acquisition field of view. An illumination device is also disclosed for this purpose.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: April 3, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Michael Grasruck, Bernhard Krauss, Martin Sedlmair
  • Patent number: 9848840
    Abstract: According to one embodiment, an X-ray diagnostic apparatus includes an X-ray tube, an X-ray detection unit, an X-ray filter, an input unit, and an X-ray filter support unit. The X-ray tube generates X-rays. The X-ray detection unit detects the X-rays transmitted through a subject. The X-ray filter is arranged between the X-ray tube and the object and has an opening. The X-ray filter support unit supports the X-ray filter so as to make the X-ray filter movable in an imaging axis direction of the X-rays.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: December 26, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Shumpei Ohashi, Yoshimasa Kobayashi, Koichiro Watanabe
  • Patent number: 9844358
    Abstract: Systems, devices, and methods are presented for automatic tuning, calibration, and verification of radiation therapy systems comprising control elements configured to control parameters of the radiation therapy systems based on images obtained using electronic portal imaging devices (EPIDs) included in the radiation therapy system.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: December 19, 2017
    Assignees: VARIAN MEDICAL SYSTEMS, INC., VARIAN MEDICAL SYSTEMS INTERNATIONAL AG
    Inventors: Robert T. Wiggers, Daryl Leung, Reto W. Filiberti, Daniel Morf, Diana Kung, Stephen Gaudio
  • Patent number: 9795805
    Abstract: System and method for shaping the intensity profile of a radiation beam incident on a target volume. Embodiments according to the present disclosure include a multi-leaf collimator (MLC) capable of sharpening (e.g., “trimming”) a proton beam, the MLC having a reduced overall weight. Leaves of the MLC according to embodiments of the present disclosure have two regions of different density, where a high density region is proximal to a radiation beam so as to block a portion of the beam, and a lower density region provides structural integrity to the leaf while reducing overall MLC weight.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 24, 2017
    Assignees: Varian Medical Systems, Inc., Varian Medical Systems International AG
    Inventors: Dave Mellenberg, Wolfgang Kaissl, Jan Timmer
  • Patent number: 9757588
    Abstract: A system and method for developing radiation therapy plans and a system and method for developing a radiation therapy plan to be used in a radiation therapy treatment is disclosed. A radiation therapy plan is developed using a registration of medical images. The registration is based on identifying landmarks located within inner body structures.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: September 12, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Michael Kaus, Vladimir Pekar, Rafael Wiemker
  • Patent number: 9554767
    Abstract: The present invention pertains to an apparatus and method for adaptive exposure in imaging systems. An x-ray source for producing x-ray radiation and an x-ray detector for measuring amount of x-ray radiation passing through the human patient and striking the detector can be used. A tomographic image of the human patient or a tomosynthetic image of the human patient can be generated. Region of interest filtering and equalization filtering can be utilized. Filtering can be accomplished with a mechanical shield or shutter or with electronic control of the x-ray source.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: January 31, 2017
    Assignee: Triple Ring Technologies, Inc.
    Inventors: Tobias Funk, Steve Denis Burion, Kate LeeAnn Bechtel, Joseph Anthony Heanue, Brian Patrick Wilfley, Augustus Percival Lowell
  • Patent number: 9460822
    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: Grant
    Filed: October 24, 2011
    Date of Patent: October 4, 2016
    Assignee: Koninklijke Philips N.V.
    Inventors: Mats Danielsson, Torbjörn Hjärn, Daniel Säll, Markus Wahlberg
  • Patent number: 9437339
    Abstract: The invention relates to a leaf assembly (102) for a multi-leaf collimator, comprising a leaf frame (104) and a plurality of leaves (106) for shielding beams (108) from a selected area, wherein the leaves (106) are arranged sideways and adjacently in the leaf frame (104) for shielding beams (108) being emitted from a radiation source (110) located above the assembly (102), wherein each leaf (106) is mounted in the leaf frame (104) displaceably in an adjusting direction (112) being oriented perpendicularly related to said beams (108), and wherein the leaf frame (104) provides a linear guidance (114) for each leaf (106) within the adjusting direction (112), being designed in a such a way that the leaf frame (104) is adapted to allow for lateral movement of the leaves (106) superposing said linear guidance (114), thus allowing mutual abutting of the leaves (106).
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: September 6, 2016
    Assignees: Deutsches Krebsforschungszentrum, Precisis AG
    Inventor: Gernot Echner
  • Patent number: 9414792
    Abstract: A CT apparatus for scanning an object is provided. An x-ray source is provided, wherein the x-ray source provides a collimated x-ray beam with a cross-section. A plurality of wedges is provided between the source and object. An actuator is connected to the wedges for moving the wedges substantially perpendicular to the length of the cross-section of the collimated x-ray beam. An x-ray detector is located on an opposite side of the object from the x-ray source and is for detecting x-rays that pass through the object and the plurality of wedges. A gantry rotates the x-ray source, the plurality of wedges, and the x-ray detector around an axis of rotation. A detection system measures the relative position of the plurality of wedges. The detection system comprises an optical sensor and a plurality of optical markers, where each wedge has at least one optical marker attached.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: August 16, 2016
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Scott Hsieh, Norbert J. Pelc
  • Patent number: 9414801
    Abstract: Disclosed herein are an X-ray imaging apparatus and a control method therefor in which a region of a compressed breast is measured by a touch sensor and a collimator is controlled such that an X-ray emission region corresponds to the measured region of a compressed breast, whereby workflow for performing X-ray imaging may be reduced and subject pain due to breast compression may be alleviated. The X-ray imaging apparatus includes an X-ray source to generate X-rays and irradiate an object with the generated X-rays, a collimator to adjust an emission region of the X-rays generated from the X-ray source, an X-ray detector to detect X-rays having passed through the object to acquire X-ray data, a touch sensor disposed above the X-ray detector, a compression paddle to compress the object placed on the touch sensor, and a collimator control unit to calculate location and size of the compressed object based on an output value of the touch sensor and control the collimator based on calculation results.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Pil Kim, So Dam Baek
  • Patent number: 9402587
    Abstract: In an embodiment, a method includes at least moving a patient table through a measurement region of the computed tomography device, the movement of the patient having at least one phase of variable speed during the projection recording, time-solved determination or recording of the patient table position, time-resolved recording of projections of at least one part of an examination object moving with the table, the number of the slices contributing to the recording being varied during the at least one phase of variable speed of the patient table as a function of the table speed in such a way that the quotient formed from the current table speed divided by the number of the slices contributing to the recording is constant so that the pitch factor is kept constant during the projection recording, and time-resolved determination or recording of the number or slices contributing to the projection recording.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: August 2, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Allmendinger, Winrich Heidinger
  • Patent number: 9392984
    Abstract: A CT apparatus for scanning an object is provided. An x-ray source is provided, wherein the x-ray source provides a collimated x-ray beam with a cross-section with a length and thickness. A plurality of wedges is provided between the source and object. An actuator is connected to the wedges for moving the wedges substantially perpendicular to the length of the cross-section of the collimated x-ray beam. An x-ray detector is located on an opposite side of the object from the x-ray source and is for detecting x-rays that pass through the object and the plurality of wedges. A gantry rotates the x-ray source, the plurality of wedges, and the x-ray detector around an axis of rotation.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: July 19, 2016
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Norbert J. Pelc, Scott Hsieh
  • Patent number: 9324468
    Abstract: A collimation assembly includes a multileaf collimator and motion assembly. The multileaf collimator includes a support body and a plurality of pairs of beam blocking leaves supported by the support body. The beam blocking leaves are longitudinally movable in a first direction. The motion assembly includes an actuator and a guide assembly operable to move the support body and thereby allowing the plurality of pairs of beam blocking leaves to move in a second direction generally transverse to the first direction.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: April 26, 2016
    Assignee: Varian Medical Systems, Inc.
    Inventors: Stanley Mansfield, Steven W. Prince
  • Patent number: 9312038
    Abstract: The present invention includes: X-ray shielding materials; X-ray shielding material mounting plates to which the X-ray shielding portions are fixed; a driven side link and a driving side link that connect the two X-ray shielding material mounting plates to each other so that the X-ray shielding portions face each other and cross each other; connecting portions that connect each of the X-ray shielding material mounting plates to the driven side link and the driving side link; and a driving device that drives the driving side link so as to rotate. Connecting portions and are provided at positions not interfering with a movable region of the X-ray shielding material mounting plates formed in conjunction with the rotational driving of the driven side link and the driving side link. The X-ray shielding material mounting plates are moved by the rotational driving of the driving side link and accordingly, the slit width between the X-ray shielding materials is changed.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: April 12, 2016
    Assignee: HITACHI MEDICAL CORPORATION
    Inventors: Norifumi Takagaki, Tsutomu Suzuki, Mikio Mochitate
  • Patent number: 9254114
    Abstract: The present invention pertains to an apparatus and method for adaptive exposure in imaging systems. An x-ray source for producing x-ray radiation and an x-ray detector for measuring amount of x-ray radiation passing through the human patient and striking the detector can be used. A tomographic image of the human patient or a tomosynthetic image of the human patient can be generated. Region of interest filtering and equalization filtering can be utilized. Filtering can be accomplished with a mechanical shield or shutter or with electronic control of the x-ray source.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: February 9, 2016
    Assignee: Triple Ring Technologies, Inc.
    Inventors: Tobias Funk, Steve Denis Burion, Augustus Percival Lowell, Kate LeeAnn Bechtel, Joseph Anthony Heanue, Brian Patrick Wilfley
  • Patent number: 9170216
    Abstract: A pinhole detection system of a fuel cell element unit including a density measurement module that calculates a density of a fuel cell element unit using weight and volume data measured from electronic weight balance and 3D scan type volume integrator. Photon energy ranges of X-ray beam and window species of the pinhole detection system automatically are selected from Group 1 or Group 2 according to the density reference point for a fuel cell element, and a stage on which a fuel cell element unit is disposed to be detected. A drive portion that moves the stage to rotate the fuel cell element unit. An X-ray source is disposed at one side of the stage to apply X-ray to the fuel cell element unit that rotates. An image detector detects an X-ray penetrating the fuel cell element unit, and a computer tomography that reconstructs a three dimensional tomogram.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: October 27, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Yeoul Ahn, Keun Je Lee, Sang Hyun Cho, Jea Suk Park, Sung Keun Lee, Byung Ki Ahn, Tae Won Lim
  • Patent number: 9123450
    Abstract: A method and apparatus for inspecting an object is present. Radiation is emitted from a radiation source. A beam is formed from a portion of the radiation emitted by the radiation source using a collimator. The collimator is connected to the radiation source by a bearing system comprising a first structure associated with the radiation source and a second structure connected to the first structure. The second structure is configured to hold the collimator. The second structure of the bearing system is moved using a movement system such that the second structure rotates in one of a plurality of directions substantially about a center point in the radiation source while the radiation source remains stationary relative to the second structure. Rotation of the second structure substantially about the center point in the radiation source changes a direction in which the beam is directed.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: September 1, 2015
    Assignee: The Boeing Company
    Inventors: Michael Liesenfelt, William Talion Edwards, Daniel Shedlock
  • Patent number: 9084581
    Abstract: An X-ray imaging system that allows X-ray images to be acquired from a desired direction by considering the tilt of a tabletop. The X-ray imaging system includes a support unit that holds an X-ray imaging unit that performs X-ray imaging of a subject. The subject is placed on the tabletop. A memory stores in advance imaging angle information from previous imaging. A tilt detector detects the tilt angle of the tabletop. A calculator calculates a correction angle for correcting the imaging angle information based on the imaging angle information and on the tilt angle. A drive unit moves the support unit to a position based on the imaging angle information and the correction angle.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: July 21, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Ryuji Zaiki, Teruomi Gunji, Katsuie Ikawa
  • Patent number: 9050060
    Abstract: An X-ray imaging system that allows X-ray images to be acquired from a desired direction by considering the tilt of a tabletop. The X-ray imaging system includes a support unit that holds an X-ray imaging unit that performs X-ray imaging of a subject. The subject is placed on the tabletop. A memory stores in advance imaging angle information from previous imaging. A tilt detector detects the tilt angle of the tabletop. A calculator calculates a correction angle for correcting the imaging angle information based on the imaging angle information and on the tilt angle. A drive unit moves the support unit to a position based on the imaging angle information and the correction angle.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: June 9, 2015
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Ryuji Zaiki, Teruomi Gunji, Katsuie Ikawa
  • Patent number: 9042521
    Abstract: Method for limiting an X-ray beam, wherein the X-ray beam is limited by a limiting unit comprising a couple of blades approaching each other or moving away from each other to adjust the width of a space between the blades the two blades being driven by an actuator (12) linked to both blades. The position of a symmetry axis (S) of the space between the blades is set in a shifting step by changing the distance between the blades and by impeding the motion of one blade in comparison with the motion of the other blade resulting in an asymmetric motion of the blades with respect to an initial position of the symmetry axis (S). The desired width (W) of the space between the blades is set in an adjustment step by an unimpeded symmetric motion of the blades with respect to the position of the symmetry axis (S) set in the shifting step.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 26, 2015
    Assignee: CEFLA SOCIETA COOPERATIVA
    Inventors: Antonio Becca, Davide Bianconi, Dario Righini
  • Patent number: 9042514
    Abstract: Among other things, one or more systems and/or techniques are described for dynamically adjusting, in a fan-angle direction, attenuation of radiation during an examination of an object such that portions of the object that are not represented in resulting (tilted/targeted) images of the object are exposed to less radiation than portions of the object that are represented in resulting (tilted/targeted) images of the object. As a rotating gantry is rotated, blades of a pre-object collimator are dynamically repositioned to selectively attenuate emitted radiation. A collimator adjustment component may be configured to determine how to reposition the blades based at least in part upon at least one of a desired tilt of the resulting (tilted) image(s), a translational position of the object, and a gantry rotation angle, for example.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 26, 2015
    Assignee: Analogic Corporation
    Inventors: Doug Abraham, Lane Howitt, Mitchell Surowiec, Carl DeVincent, David Rozas
  • Patent number: 9036779
    Abstract: A variable mode X-ray transmission system is provided that can be operated in low or high dose rate modes depending upon the area or portion of the vehicle to be screened. In one embodiment, variable dose rate is achieved by use of a novel collimator. The systems disclosed in this application enable the scanning of a vehicle cab portion (occupied by people, such as a driver) at low dose rate, which is safe for human beings, while allowing the scanning of the cargo portion (unoccupied by people) at a high dose rate. Rapid switching from low dose rate to high dose rate operating mode is provided, while striking a balance between high material penetration for cargo portion and low intensity exposure that is safe for occupants in the cab portion of the inspected vehicle.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: May 19, 2015
    Assignee: Rapiscan Systems, Inc.
    Inventor: Edward James Morton
  • Publication number: 20150131781
    Abstract: A movable diaphragm unit is configured such that, when a restricting blade is moved away from a normal line extending from a center of a focal spot of X-ray to a first virtual plane including a detector plane, a moving distance of a crossing line of a second virtual plane including an end surface of the restricting blade and a third virtual plane including the focal spot with respect to a center of the focal spot becomes shorter than a moving distance with respect to the normal line of the end surface.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Yasuo Ohashi, Kazuyuki Ueda
  • Patent number: 9031204
    Abstract: A leaf module for a multi-leaf collimator comprises a leaf unit and a leaf drive unit. The leaf unit comprises a leaf for shielding beams from a selected area. The leaf unit is mounted displaceably in an adjusting direction with relation to the leaf drive unit. The leaf drive unit is designed to displace the leaf unit linearly in the adjusting direction. The leaf drive unit comprises at least one drive mechanism which operates based on piezoelectric actuation, being designed such that the leaf drive unit thoroughly encloses the leaf unit within a plane being oriented substantially perpendicularly related to the adjusting direction. The multi-leaf collimator can comprise a plurality of leaf modules while being shaped as compact as possible. Both precise and stable adjustability of the leaf unit is achieved with the leaf module.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: May 12, 2015
    Assignee: Deutsches Krebsforschungszentrum
    Inventors: Gernot Echner, Steffen Seeber, Klaus Schewiola
  • Patent number: 9028145
    Abstract: Apparatus and methods for collimation of x-ray beams. According to various embodiments, an x-ray apparatus may comprise a first rotatable disk comprising a first plurality of angled slots and a first shutter comprising a first plurality of protruding members. At least one of the first plurality of protruding members may be positioned within a first angled slot of the first plurality of angled slots, and at least one of the first plurality of protruding members may be positioned within a second angled slot of the first plurality of angled slots. The first shutter may at least partially define an x-ray collimation aperture, and the apparatus may be configured such that rotation of the first rotatable disk results in movement of the first shutter to alter a size of the x-ray collimation aperture.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Aribex, Inc.
    Inventors: David J. Laws, Devin Ellsworth
  • 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