Patents by Inventor Calvin R. Maurer

Calvin R. Maurer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11185715
    Abstract: A method of image-guided radiation treatment is described. The method may include acquiring a pre-treatment image of a patient and generating a first set of image data of part or all of the patient using imaging radiation at a first energy level and a second set of image data of part or all of the patient using imaging radiation at a second energy level. The method may also include processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, and wherein part or all of the image data comprises the target. The method may also include registering the enhanced image with the pre-treatment image to obtain a registration result and tracking movement and position of the target using the registration result to generate tracking information.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 30, 2021
    Assignee: Accuray Incorporated
    Inventors: Petr Jordan, Andriy Myronenko, Jay B. West, Calvin R. Maurer, Prashant Chopra, Anuj K. Purwar, Christopher A. Janko
  • Publication number: 20210154496
    Abstract: A method comprises inputting a treatment planning image of a target subject into a machine learning system. The method further comprises determining, by the machine learning system, a first target-subject-specific model of the treatment planning image. The method further comprises applying, by a processing device, the first target-subject-specific model to the treatment planning image to generate a transformed treatment planning image corresponding to a first position of a plurality of positions of the target subject. The method further comprises comparing the transformed treatment planning image to a reference image. The method further comprises, based on the comparing, modifying one or more parameters of the first target-subject-specific model to generate a second target-subject-specific model corresponding to a second position of the plurality of positions.
    Type: Application
    Filed: November 13, 2020
    Publication date: May 27, 2021
    Inventors: Calvin R. Maurer, Eric Schnarr, Rich Holloway, Jacob Shea, Charles Brandon Frederick, Kevin Gorczowski, Robert Elijah Broadhurst, Mark Foskey
  • Publication number: 20210154494
    Abstract: A method comprises identifying a treatment planning image of a target subject, the treatment planning image comprising information associated with an arrangement of structures within the target subject. The method further comprises generating, based on the information, a set of reference data associated with the target subject, the reference data indicating a plurality of positions of the target subject. The method further comprises generating target-subject-specific models based on the reference data and modifying one or more hyper-parameters of the target-subject-specific mode to generate second target-subject-specific models corresponding to a second position of the plurality of positions. The method further comprises controlling a radiation treatment delivery device based on the second target-subject-specific model to deliver a radiation treatment to the target subject.
    Type: Application
    Filed: November 13, 2020
    Publication date: May 27, 2021
    Inventors: Calvin R. Maurer, Eric Schnarr, Rich Holloway, Jacob Shea, Charles Brandon Frederick, Kevin Gorczowski, Robert Elijah Broadhurst, Mark Foskey
  • Publication number: 20210077043
    Abstract: A method of and apparatus for operating a radiation treatment delivery system. The method includes generating, by a processing device, a set of instructions for a volumetric imager based on a set of directionalities for a radiation beam of a linear accelerator (LINAC) to avoid a collision between the volumetric imager and the LINAC, wherein the set of instructions comprises physical locations of the volumetric imager and timing values corresponding to the physical locations. The method further includes operating the volumetric imager during the radiation treatment delivery according to the set of instructions.
    Type: Application
    Filed: November 6, 2020
    Publication date: March 18, 2021
    Inventors: Michael P. Naylor, Matthew Core, Petr Jordan, Calvin R. Maurer, JR.
  • Publication number: 20210038918
    Abstract: A method of image-guided radiation treatment is described. The method may include acquiring a pre-treatment image of a patient and generating a first set of image data of part or all of the patient using imaging radiation at a first energy level and a second set of image data of part or all of the patient using imaging radiation at a second energy level. The method may also include processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, and wherein part or all of the image data comprises the target. The method may also include registering the enhanced image with the pre-treatment image to obtain a registration result and tracking movement and position of the target using the registration result to generate tracking information.
    Type: Application
    Filed: October 28, 2020
    Publication date: February 11, 2021
    Inventors: Petr Jordan, Andriy Myronenko, Jay B. West, Calvin R. Maurer, Prashant Chopra, Anuj K. Purwar, Christopher A. Janko
  • Patent number: 10863955
    Abstract: A method includes determining a first set of positions for a volumetric imager and determining a second set of positions for a linear accelerator (LINAC), during radiation treatment delivery. The method further includes determining a set of radiation beam directionalities of the LINAC, wherein for each of the second set of positions for the LINAC a radiation beam corresponds to a radiation beam directionality. The method further includes generating instructions for the volumetric imager based on the first and the second set of positions, the radiation beam directionalities, and a treatment time constraint to avoid a collision between the volumetric imager and the LINAC and between the volumetric imager and the radiation beam, wherein the instructions include physical locations of the volumetric imager and timing values corresponding to the physical locations. The method further includes operating the volumetric imager during the radiation treatment delivery according to the set of instructions.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: December 15, 2020
    Assignee: Accuray Incorporated
    Inventors: Michael P. Naylor, Matthew Core, Petr Jordan, Calvin R. Maurer, Jr.
  • Publication number: 20200375560
    Abstract: A method includes receiving, from a volumetric imager, a first image including a target of a patient. The method further includes receiving a second image including the target of the patient. The method further includes tracking, by a processing device, a position of the target using the first image and the second image by maintaining a fixed alignment between a treatment beam of a linear accelerator (LINAC) and a source and detector pair of the volumetric imager during operation of the LINAC.
    Type: Application
    Filed: August 14, 2020
    Publication date: December 3, 2020
    Inventors: Michael P. Naylor, Matthew Core, Petr Jordan, Calvin R. Maurer, JR.
  • Patent number: 10843010
    Abstract: A method of image-guided radiation treatment is described. The method may include acquiring digitally reconstructed radiographs (DRRs) of a patient and generating a first set of image data of part or all of the patient using imaging radiation at a first energy level and a second set of image data of part or all of the patient using imaging radiation at a second energy level. The method may also include processing the first and second sets of image data to generate an enhanced image, wherein the enhanced image comprises a combination of the first and second sets of image data, and wherein part or all of the image data comprises the target. The method may also include registering the enhanced image with the DRRs to obtain a registration result, tracking movement and position of the target using the registration result to generating tracking information.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: November 24, 2020
    Assignee: Accuray Incorporated
    Inventors: Petr Jordan, Andriy Myronenko, Jay B. West, Calvin R. Maurer, Prashant Chopra, Anuj K. Purwar, Christopher A. Janko
  • Patent number: 10813205
    Abstract: A reference image of a patient may be generated. A subsequent x-ray image of the patient may be generated after the generating of the reference image where the subsequent x-ray image is associated with a low dosage. A difference between the reference image and the subsequent x-ray image that is associated with the low dosage may be determined. A motion of the patient may be identified as having occurred based on the determined difference.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 20, 2020
    Assignee: Accuray Incorporated
    Inventors: Petr Jordan, Jonathan Cecil Chappelow, Calvin R. Maurer, Jr., Eric Schnarr
  • Publication number: 20200320722
    Abstract: A method of the present disclosure includes performing, by a processing device, a first image registration between a reference image of a patient and a motion image of the patient to perform alignment between the reference image and the motion image, wherein the reference image and the motion image include a target position of the patient. The method further includes performing, by the processing device, a second image registration between the reference image and a motion x-ray image of the patient, via a first digitally reconstructed radiograph (DRR) for the reference image of the patient. The method further includes tracking at least a translational change in the target position based on the first registration and the second registration.
    Type: Application
    Filed: June 22, 2020
    Publication date: October 8, 2020
    Inventors: Petr Jordan, Calvin R. Maurer, JR., Andriy Myronenko, Jonathan Cecil Chappelow
  • Publication number: 20200316403
    Abstract: Systems and methods for tracking a target volume, e.g., tumor, in real-time during radiation treatment are provided. The system includes a memory to store a pre-acquired 3D image of the anatomy of interest in a first reference frame and a processor, operative coupled with the memory, to receive, from an ultrasound probe, a set-up ultrasound image of the anatomy of interest in a second reference frame. The processor further to establish a transformation between the first and second reference frames by registering the set-up ultrasound image with the pre-acquired 3D image and receive, from the ultrasound probe, an intrafraction ultrasound image of the anatomy of interest. The processor further to register the intrafraction ultrasound image with the set-up ultrasound image and track motion of the anatomy of interest based on the registered intrafraction ultrasound image.
    Type: Application
    Filed: June 24, 2020
    Publication date: October 8, 2020
    Inventors: Calvin R. Maurer, Jay West, Petr Jordan
  • Patent number: 10751014
    Abstract: A method includes receiving, from a volumetric imager, a first image including a target of a patient. The method further includes receiving a second image including the target of the patient. The method further includes tracking, by a processing device, a position of the target using the first image and the second image.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: August 25, 2020
    Assignee: Accuray Incorporated
    Inventors: Michael P. Naylor, Matthew Core, Petr Jordan, Calvin R. Maurer, Jr.
  • Patent number: 10713801
    Abstract: A method of the present disclosure includes performing, by a processing device, a first image registration between a reference image of a patient and a motion image of the patient to perform alignment between the reference image and the motion image, wherein the reference image and the motion image include a target position of the patient. The method further includes performing, by the processing device, a second image registration between the reference image and a motion x-ray image of the patient, via a first digitally reconstructed radiograph (DRR) for the reference image of the patient. The method further includes tracking at least a translational change in the target position based on the first registration and the second registration.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: July 14, 2020
    Assignee: Accuray Incorporated
    Inventors: Petr Jordan, Calvin R. Maurer, Jr., Andriy Myronenko, Jonathan Cecil Chappelow
  • Patent number: 10709903
    Abstract: A radiation treatment apparatus, comprising a gantry structure comprising a beam member extending between first and second ends of the gantry structure. The radiation treatment apparatus also includes a radiation treatment head movably mounted to the beam member in a manner that allows (i) translation of the radiation treatment head along the beam member between the first and second ends, and (ii) gimballing of the radiation treatment head relative to the beam member, the gimballing comprising pivotable movement in at least one independent pivot direction defined with respect to the beam member. The radiation treatment apparatus also includes a patient couch operative coupled with the radiation treatment head in manner to provide movement of the patient couch relative to the radiation treatment head.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 14, 2020
    Assignee: ACCURACY INCORPORATED
    Inventors: Calvin R. Maurer, Jr., Euan S. Thomson
  • Patent number: 10702712
    Abstract: Systems and methods for tracking a target volume, e.g., tumor, in real-time during radiation treatment are provided. Under one aspect, a system includes an ultrasound probe, an x-ray imager, a processor, and a computer-readable medium that stores a 3D image of the tumor in a first reference frame and instructions for causing the processor to: instruct the x-ray imager and ultrasound probe to substantially simultaneously obtain inherently registered x-ray and set-up ultrasound images of the tumor in a second reference frame; establish a transformation between the first and second reference frames by registering the 3D image and the x-ray image; instruct the ultrasound probe to obtain an intrafraction ultrasound image of the tumor; registering the intrafraction ultrasound image with the set-up ultrasound image; and track target volume motion based on the registered intrafraction ultrasound image.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: July 7, 2020
    Assignee: ACCURAY INCORPORATED
    Inventors: Calvin R. Maurer, Jay West, Petr Jordan
  • Publication number: 20200171328
    Abstract: A radiotherapy delivery device is provided. The device includes a source of therapeutic radiation and a first detector positioned to receive radiation from the source of therapeutic radiation. The device also includes a source of imaging radiation and a second detector positioned to receive radiation from the source of imaging radiation. A collimator assembly is positioned relative to the second source of radiation to selectively control a shape of a radiation beam emitted by the second radiation source to selectively expose part or the whole of the second radiation detector. A reconstruction processor can be operatively coupled to the detector and configured to generate patient images based on radiation received by the second detector from the second source of radiation. The device is configured to move from one imaging geometry to another using all or part of the second detector.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: Jacob Shea, Daniel Gagnon, Eric Schnarr, Edward Henry Chao, Petr Jordan, Calvin R. Maurer, JR.
  • Publication number: 20200170601
    Abstract: An x-ray imaging apparatus and associated methods are provided to receive measured projection data from a wide aperture scan of a wide axial region and a narrow aperture scan of a narrow axial region within the wide axial region and determine an estimated scatter in the wide axial region using an optimized scatter estimation technique. The optimized scatter estimation technique is based on the difference between the measured scatter in the narrow axial region and the estimated scatter in the narrow axial region. Kernel-based scatter estimation/correction techniques can be fitted to minimize the scatter difference in the narrow axial region and thereafter applying the fitted (optimized) kernel-based scatter estimation/correction to the wide axial region. Optimizations can occur in the projection data domain or the reconstruction domain. Iterative processes are also utilized.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: Daniel Gagnon, Chuanyong Bai, Zhicong Yu, Amit Jain, Calvin R. Maurer, JR.
  • Publication number: 20200170607
    Abstract: An imaging apparatus and associated methods are provided to efficiently estimate scatter during multi-fraction treatments for improved quality and workflow. Estimated scatter from one fraction during a treatment course can be utilized during subsequent fractions, allowing for measurements with higher scatter-to-primary ratios. The quality of scatter estimates can be maintained, while workflow improves and dosage decreases. Scan configuration limits can be utilized to maintain a minimum level of scatter measurement quality. Patient information can be monitored to ensure that prior fraction scatter estimates are still applicable to current patient status.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: Zhicong Yu, Chuanyong Bai, Amit Jain, Daniel Gagnon, Jacob Shea, Wenli Wang, Calvin R. Maurer, JR.
  • Patent number: 10610175
    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 ring gantry having a central opening and a radiation treatment head coupled to the ring gantry that is rotatable around the central opening in at least a 180 degree arc. For one preferred embodiment, the apparatus further comprises a gantry translation mechanism configured to translate the ring gantry in a direction of a longitudinal axis extending through the central opening. Noncoplanar radiation treatment delivery can thereby be achieved without requiring movement of the patient. For another preferred embodiment, an independently translatable 3D imaging device distinct from the ring gantry is provided for further achieving at least one of pre-treatment imaging and setup imaging of the target tissue volume without requiring movement of the patient.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: April 7, 2020
    Assignee: ACCURAY INCORPORATED
    Inventor: Calvin R. Maurer, Jr.
  • Patent number: 10603512
    Abstract: Systems and methods for tracking a target volume, e.g., tumor, during radiation treatment are provided. Under one aspect, a system includes an ultrasound probe, an x-ray imager, a processor, and a computer-readable medium that stores a 3D image of the tumor in a first reference frame and instructions to cause the processor to: instruct the x-ray imager and ultrasound probe to substantially simultaneously obtain inherently registered x-ray and set-up ultrasound images of the tumor in a second reference frame; establish a transformation between the first and second reference frames by registering the 3D image and the x-ray image; instruct the ultrasound probe to obtain an intrafraction ultrasound image of the tumor; registering the intrafraction ultrasound image with the set-up ultrasound image; and track target volume motion based on the registered intrafraction ultrasound image.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: March 31, 2020
    Assignee: ACCURAY INCORPORATED
    Inventors: Calvin R. Maurer, Jay West, Petr Jordan