Patents by Inventor Gregory Bootsma

Gregory Bootsma 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).

  • Target-specific dose and scatter estimation in CT images
    Patent number: 10497113
    Abstract: Embodiments disclose a method performed by at least one processor for processing a plurality of x-ray projection images of a subject, the method comprising a plurality of operations including reconstructing the projection images to yield a volume reconstruction; segmenting the reconstructed volume by assigning a material type to each voxel; estimating a first set of scatter images corresponding to a subset of the projection images by calculating probabilistic predictions of interactions of x-rays with the subject and applying a low pass spatial filter to the scatter images; estimating a second set of scatter images corresponding to projection images not included in the subset, based on the first set of scatter images; and subtracting, for each projection image, the corresponding scatter image to yield a corrected projection image.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: December 3, 2019
    Assignees: Elekta AB (publ), University Health Network
    Inventors: Marcus Hennix, Hakan Nordstrom, Markus Eriksson, Jonas Adler, David Jaffray, Gregory Bootsma, Frank Verhaegen, Bjorn Nutti
  • TARGET-SPECIFIC DOSE AND SCATTER ESTIMATION IN CT IMAGES
    Publication number: 20160314584
    Abstract: Embodiments disclose a method performed by at least one processor for processing a plurality of x-ray projection images of a subject, the method comprising a plurality of operations including reconstructing the projection images to yield a volume reconstruction; segmenting the reconstructed volume by assigning a material type to each voxel; estimating a first set of scatter images corresponding to a subset of the projection images by calculating probabilistic predictions of interactions of x-rays with the subject and applying a low pass spatial filter to the scatter images; estimating a second set of scatter images corresponding to projection images not included in the subset, based on the first set of scatter images; and subtracting, for each projection image, the corresponding scatter image to yield a corrected projection image.
    Type: Application
    Filed: December 18, 2014
    Publication date: October 27, 2016
    Applicants: Elekta AB (publ), University Health Network
    Inventors: Marcus HENNIX, Hakan NORDSTROM, Markus Eriksson, Jonas ADLER, David JAFFRAY, Gregory BOOTSMA, Frank VERHAEGEN, Bjorn NUTTI
  • Image-guided multi-source radiotherapy
    Patent number: 7729473
    Abstract: A highly compact, high-performance volumetric imaging system is proposed, that is integrated with a multi-source Cobalt-60 gamma irradiator for high throughput, high accuracy and minimally invasive fractioned treatments of intracranial, orbital and head-and-neck targets.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: June 1, 2010
    Assignee: Elekta AB (publ)
    Inventors: David A. Jaffray, Kevin John Brown, Gregory Bootsma, Mark Ruschin, Per Carlsson
  • Image-guided multi-source radiotherapy
    Publication number: 20100027744
    Abstract: A highly compact, high-performance volumetric imaging system is proposed, that is integrated with a multi-source Cobalt-60 gamma irradiator for high throughput, high accuracy and minimally invasive fractioned treatments of intracranial, orbital and head-and-neck targets.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 4, 2010
    Applicant: Elekta AB
    Inventors: Kevin John Brown, Gregory Bootsma, Mark Ruschin, David A. Jaffray, Per Carlsson