Patents Assigned to Dexela Limited
  • Patent number: 9888897
    Abstract: Methods of imaging a breast comprising acquiring a sequence of image data sets having differing exposure parameters; and combining the image data sets into a mammography image having greater dynamic range than the dynamic range of any single component image data set. Disclosed methods may further comprise determining an exposure parameter of one or more component image data sets prior to acquiring the sequence of image data sets. The step of determining an exposure parameter of one or more component image data sets may comprise determining exposure duration or an exposure irradiation level. Also disclosed are mammography apparatus and systems to obtain images according to the disclosed methods.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 13, 2018
    Assignee: Dexela Limited
    Inventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
  • Patent number: 9230311
    Abstract: Methods of imaging a breast comprising acquiring a sequence of image data sets having differing exposure parameters; and combining the image data sets into a mammography image having greater dynamic range than the dynamic range of any single component image data set. Disclosed methods may further comprise determining an exposure parameter of one or more component image data sets prior to acquiring the sequence of image data sets. The step of determining an exposure parameter of one or more component image data sets may comprise determining exposure duration or an exposure irradiation level. Also disclosed are mammography apparatus and systems to obtain images according to the disclosed methods.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: January 5, 2016
    Assignee: Dexela Limited
    Inventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
  • Patent number: 8644595
    Abstract: In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: February 4, 2014
    Assignee: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Publication number: 20130272495
    Abstract: Methods of imaging a breast comprising acquiring a sequence of image data sets having differing exposure parameters; and combining the image data sets into a mammography image having greater dynamic range than the dynamic range of any single component image data set. Disclosed methods may further comprise determining an exposure parameter of one or more component image data sets prior to acquiring the sequence of image data sets. The step of determining an exposure parameter of one or more component image data sets may comprise determining exposure duration or an exposure irradiation level. Also disclosed are mammography apparatus and systems to obtain images according to the disclosed methods.
    Type: Application
    Filed: February 1, 2012
    Publication date: October 17, 2013
    Applicant: Dexela Limited
    Inventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
  • Publication number: 20120219202
    Abstract: In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.
    Type: Application
    Filed: May 7, 2012
    Publication date: August 30, 2012
    Applicant: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Patent number: 8238649
    Abstract: In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 7, 2012
    Assignee: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Patent number: 7940885
    Abstract: In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the object to form the projection data, performing a first reconstruction of the projection data to form at least one bootstrap image, obtaining first data based on information provided by the at least one bootstrap image, and performing a second reconstruction of the projection data based, at least in part, on the first data to form at least one second image.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: May 10, 2011
    Assignee: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Publication number: 20110012897
    Abstract: In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 20, 2011
    Applicant: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Patent number: 7817773
    Abstract: A method and apparatus for imaging an object including the steps of projecting radiation from a radiation source through an object and moving the radiation source through multiple imaging positions relative to the object without stopping movement of the radiation source. Movement is accomplished while projecting radiation at more than one of the imagining positions with the source having a source velocity for at least one imaging position that is different from a source velocity for a second imaging position. Radiation transmitted through the object is also detected. Radiation may be projected while moving the radiation source through the multiple imaging positions. In addition, the velocity at which the radiation source is moved through a select imaging position may be related to a resolution desired for data collection at the select imaging position. The velocity of the radiation source may be varied within a select imaging position.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: October 19, 2010
    Assignee: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Gordon D Row, Timothy Lee Moulton
  • Publication number: 20090274272
    Abstract: In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the object to form the projection data, performing a first reconstruction of the projection data to form at least one bootstrap image, obtaining first data based on information provided by the at least one bootstrap image, and performing a second reconstruction of the projection data based, at least in part, on the first data to form at least one second image.
    Type: Application
    Filed: July 2, 2009
    Publication date: November 5, 2009
    Applicant: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Publication number: 20090262893
    Abstract: In one aspect, a method of obtaining projection data of an object from a plurality of view angles with respect to the object is provided. The method comprises acts of providing radiation, at each of the plurality of view angles, to an exposure area in which the object is positioned, controlling a radiation energy of the radiation provided at each of the plurality of view angles such that the respective radiation energy is different for at least two of the plurality of view angles, and detecting at least some of the radiation passing through the exposure area at each of the plurality of view angles to obtain the projection data.
    Type: Application
    Filed: May 11, 2009
    Publication date: October 22, 2009
    Applicant: Dexela Limited
    Inventors: Alexander Stewart, Martin Stanton, Edward Bullard
  • Patent number: 7570732
    Abstract: In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the object to form the projection data, performing a first reconstruction of the projection data to form at least one bootstrap image, obtaining first data based on information provided by the at least one bootstrap image, and performing a second reconstruction of the projection data based, at least in part, on the first data to form at least one second image.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: August 4, 2009
    Assignee: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Patent number: 7545907
    Abstract: In one aspect, a method of obtaining projection data of an object from a plurality of view angles with respect to the object is provided. The method comprises acts of providing radiation, at each of the plurality of view angles, to an exposure area in which the object is positioned, controlling a radiation energy of the radiation provided at each of the plurality of view angles such that the respective radiation energy is different for at least two of the plurality of view angles, and detecting at least some of the radiation passing through the exposure area at each of the plurality of view angles to obtain the projection data.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: June 9, 2009
    Assignee: Dexela Limited
    Inventors: Alexander Stewart, Martin Stanton, Edward Bullard
  • Publication number: 20080165916
    Abstract: A method and apparatus for imaging an object including the steps of projecting radiation from a radiation source through an object and moving the radiation source through multiple imaging positions relative to the object without stopping movement of the radiation source. Movement is accomplished while projecting radiation at more than one of the imagining positions with the source having a source velocity for at least one imaging position that is different from a source velocity for a second imaging position. Radiation transmitted through the object is also detected. Radiation may be projected while moving the radiation source through the multiple imaging positions. In addition, the velocity at which the radiation source is moved through a select imaging position may be related to a resolution desired for data collection at the select imaging position. The velocity of the radiation source may be varied within a select imaging position.
    Type: Application
    Filed: January 5, 2007
    Publication date: July 10, 2008
    Applicant: DEXELA LIMITED
    Inventors: Martin Stanton, Alexander Stewart, Gordon D. Row, Timothy Lee Moulton
  • Publication number: 20070242868
    Abstract: In one aspect, a method of displaying data is provided. The method comprises obtaining projection data of an object by exposing an object to radiation at a plurality of view angles and detecting at least some of the radiation exiting the object to form the projection data, operating a computer to reconstruct the projection data at a reconstruction resolution to form image data comprising a plurality of voxels representing locations within the object, each of the plurality of voxels being assigned an associated intensity indicative of a density of the subject matter at the respective location, determining a maximum resolution for display, above which variation in intensity between adjacent voxels is not supported by information in the projection data, the maximum resolution being less than the reconstruction resolution, and displaying the image data at or below the maximum resolution.
    Type: Application
    Filed: November 22, 2006
    Publication date: October 18, 2007
    Applicant: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Publication number: 20070242794
    Abstract: In one aspect, A method of imaging an object of interest positioned in an exposure area is provided. The method comprises obtaining projection data of the object by providing radiation to the exposure area and detecting at least some of the radiation exiting the object to form the projection data, performing a first reconstruction of the projection data to form at least one bootstrap image, obtaining first data based on information provided by the at least one bootstrap image, and performing a second reconstruction of the projection data based, at least in part, on the first data to form at least one second image.
    Type: Application
    Filed: November 22, 2006
    Publication date: October 18, 2007
    Applicant: Dexela Limited
    Inventors: Martin Stanton, Alexander Stewart, Edward Bullard
  • Publication number: 20070242797
    Abstract: In one aspect, a method of obtaining projection data of an object from a plurality of view angles with respect to the object is provided. The method comprises acts of providing radiation, at each of the plurality of view angles, to an exposure area in which the object is positioned, controlling a radiation energy of the radiation provided at each of the plurality of view angles such that the respective radiation energy is different for at least two of the plurality of view angles, and detecting at least some of the radiation passing through the exposure area at each of the plurality of view angles to obtain the projection data.
    Type: Application
    Filed: November 9, 2006
    Publication date: October 18, 2007
    Applicant: Dexela Limited
    Inventors: Alexander Stewart, Martin Stanton, Edward Bullard