Patents Assigned to Accuray, Inc.
  • Patent number: 9258876
    Abstract: Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons injected into the accelerator structure during each pulse by varying the width of the beam pulse, i.e., pulse width.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: February 9, 2016
    Assignee: Accuray, Inc.
    Inventors: Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Patent number: 9167681
    Abstract: Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons injected into the accelerator structure during each pulse by varying the electron beam current applied to an electron gun.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 20, 2015
    Assignee: Accuray, Inc.
    Inventors: Stephen W. Cheung, Roger H. Miller, Juwen Wang
  • Patent number: 8989349
    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: September 30, 2004
    Date of Patent: March 24, 2015
    Assignee: Accuray, Inc.
    Inventors: Euan Thomson, John Robinson Dooley, Gopinath Kuduvalli, James Wang, Eric Earnst, Chris Raanes
  • 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: 20130315379
    Abstract: The disclosure relates to systems and methods for interleaving operation of a linear accelerator that use a magnetron as the source of electromagnetic waves for use in accelerating electrons to at least two different ranges of energies. The accelerated electrons can be used to generate x-rays of at least two different energy ranges. In certain embodiments, the accelerated electrons can be used to generate x-rays of at least two different energy ranges. The systems and methods are applicable to traveling wave linear accelerators.
    Type: Application
    Filed: November 12, 2012
    Publication date: November 28, 2013
    Applicant: Accuray, Inc.
    Inventor: Accuray, Inc.
  • Patent number: 8406851
    Abstract: An apparatus and method of tracking a patient using a virtual image.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: March 26, 2013
    Assignee: Accuray Inc.
    Inventors: Jay B. West, Dongshan Fu
  • Publication number: 20130063052
    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: Application
    Filed: September 11, 2012
    Publication date: March 14, 2013
    Applicant: Accuray, Inc.
    Inventors: Ching-Hung Ho, Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Patent number: 8384314
    Abstract: An electromagnetic wave having a phase velocity and an amplitude is provided by an electromagnetic wave source to a traveling wave linear accelerator. The traveling wave linear accelerator generates a first output of electrons having a first energy by accelerating an electron beam using the electromagnetic wave. The first output of electrons can be contacted with a target to provide a first beam of x-rays. The electromagnetic wave can be modified by adjusting its amplitude and the phase velocity. The traveling wave linear accelerator then generates a second output of electrons having a second energy by accelerating an electron beam using the modified electromagnetic wave. The second output of electrons can be contacted with a target to provide a second beam of x-rays. A frequency controller can monitor the phase shift of the electromagnetic wave from the input to the output ends of the accelerator and can correct the phase shift of the electromagnetic wave based on the measured phase shift.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 26, 2013
    Assignee: Accuray, Inc.
    Inventors: Paul Dennis Treas, Roger Heering Miller, Juwen Wang
  • Publication number: 20130016889
    Abstract: An image registration process for detecting a change in position of a surgical target, such as a tumor, within a patient is disclosed. A pre-operative model of the target and surrounding area is generated, then registered to live patient images to determine or confirm a location of the target during the course of surgery. Image registration is based on a non-iterative image processing logic that compares a similarity measure for a template of the target (generated from the pre-operative model) at one location within the live image to other locations within the live image.
    Type: Application
    Filed: July 14, 2011
    Publication date: January 17, 2013
    Applicant: ACCURAY, INC.
    Inventors: Andriy Myronenko, Petr Jordan, Jay Bailey West
  • Patent number: 8311187
    Abstract: The disclosure relates to systems and methods for interleaving operation of a linear accelerator that use a magnetron as the source of electromagnetic waves for use in accelerating electrons to at least two different ranges of energies. The accelerated electrons can be used to generate x-rays of at least two different energy ranges. In certain embodiments, the accelerated electrons can be used to generate x-rays of at least two different energy ranges. The systems and methods are applicable to traveling wave linear accelerators.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: November 13, 2012
    Assignee: Accuray, Inc.
    Inventors: Paul Dennis Treas, Roger Heering Miller
  • 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: 8232748
    Abstract: An electromagnetic wave having a phase velocity and an amplitude is provided by an electromagnetic wave source to a traveling wave linear accelerator. The traveling wave linear accelerator generates a first output of electrons having a first energy by accelerating an electron beam using the electromagnetic wave. The first output of electrons can be contacted with a target to provide a first beam of x-rays. The electromagnetic wave can be modified by adjusting its amplitude and the phase velocity. The traveling wave linear accelerator then generates a second output of electrons having a second energy by accelerating an electron beam using the modified electromagnetic wave. The second output of electrons can be contacted with a target to provide a second beam of x-rays. A frequency controller can monitor the phase shift of the electromagnetic wave from the input to the output ends of the accelerator and can correct the phase shift of the electromagnetic wave based on the measured phase shift.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: July 31, 2012
    Assignee: Accuray, Inc.
    Inventors: Paul Dennis Treas, Roger Heering Miller, Juwen Wang
  • Patent number: 8203289
    Abstract: The disclosure relates to systems and methods for fast-switching operating of a standing wave linear accelerator (LINAC) for use in generating x-rays of at least two different energy ranges with advantageously low heating of electronic switches. In certain embodiments, the heating of electronic switches during a fast-switching operation of the LINAC can be kept advantageously low through the controlled, timed activation of multiple electronic switches located in respective side cavities of the standing wave LINAC, or through the use of a modified a side cavity that includes an electronic switch.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: June 19, 2012
    Assignee: Accuray, Inc.
    Inventors: Ching-Hung Ho, Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Publication number: 20120081042
    Abstract: Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons injected into the accelerator structure during each pulse by varying the electron beam current applied to an electron gun.
    Type: Application
    Filed: December 22, 2010
    Publication date: April 5, 2012
    Applicant: ACCURAY, INC.
    Inventors: Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Publication number: 20120081041
    Abstract: Provided herein are systems and methods for operating a traveling wave linear accelerator to generate stable electron beams at two or more different intensities by varying the number of electrons injected into the accelerator structure during each pulse by varying the width of the beam pulse, i.e., pulse width.
    Type: Application
    Filed: December 22, 2010
    Publication date: April 5, 2012
    Applicant: ACCURAY, INC.
    Inventors: Stephen Wah-Kwan Cheung, Roger Heering Miller, Juwen Wang
  • Publication number: 20120035470
    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: Application
    Filed: August 8, 2011
    Publication date: February 9, 2012
    Applicant: ACCURAY, INC.
    Inventors: Gopinath Kuduvalli, Paul D. Treas, Adam J. Weber
  • Publication number: 20120008734
    Abstract: Systems, methods, and related computer program products for medical imaging and image-guided radiation treatment (IGRT) are described. In one preferred embodiment, an IGRT system provides intrafraction target tracking based on a comparison of intrafraction x-ray tomosynthesis image data with initial x-ray tomosynthesis image data acquired with the patient in an initial treatment position, the initial x-ray tomosynthesis image data having an inherent registration with co-acquired image data from a setup imaging system integral with, or having known geometry relative to, the tomosynthesis imaging system. Repeated registration of intrafraction x-ray tomosynthesis image data with pre-acquired reference image data from a different frame of reference is not required during intrafraction radiation delivery. Advantages include streamlined intrafraction computation and/or reduced treatment delivery margins.
    Type: Application
    Filed: June 8, 2011
    Publication date: January 12, 2012
    Applicant: ACCURAY, INC.
    Inventors: Euan S. Thomson, Calvin R. Maurer, JR.
  • Publication number: 20120008735
    Abstract: Systems, methods, and related computer program products for medical imaging and image-guided radiation treatment (IGRT) are described. In one embodiment, an IGRT system selectively integrates x-ray source arrays, dual-energy imaging, stereoscopic imaging, static and dynamic source collimation, and/or inverse geometry tomosynthesis imaging to acquire and/or track a target during radiation treatment. Advantages include reduced patient x-ray dose and/or reduced treatment delivery margins.
    Type: Application
    Filed: June 8, 2011
    Publication date: January 12, 2012
    Applicant: ACCURAY, INC.
    Inventors: Calvin R. Maurer, Mu Young Lee, Gopinath Kuduvalli, Petr Jordan, Prashant Chopra
  • Publication number: 20110092793
    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: Application
    Filed: December 9, 2010
    Publication date: April 21, 2011
    Applicant: Accuray, Inc.
    Inventors: Euan Thomson, John Robinson Dooley, Gopinath Kuduvalli, James Wang, Eric Earnst, Chris Raanes
  • Patent number: 7860550
    Abstract: A robotic patient positioning assembly for therapeutic radiation treatment includes a robotic positioning device for moving and supporting the patient during treatment, a sensor system for detecting the position of the robotic positioning device, and a controller operatively connected with the sensor system for receiving position data of the robotic positioning device and operatively connected to the robotic positioning device for controlling the motions of the robotic positioning device. The controller is adapted for controlling the motion of the robotic positioning device in response to information representative of the position of the robotic positioning device received from the sensor system, so that the treatment target within a patient loaded on the robotic positioning device is properly aligned with a radiation source of a therapeutic radiation treatment system.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: December 28, 2010
    Assignee: Accuray, Inc.
    Inventors: Michael Saracen, James Wang, Euan Thomson, Eric Earnst, Chris Raanes, Mohan Bodduluri