Patents Assigned to Dexela Limited
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Patent number: 9888897Abstract: 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: GrantFiled: December 1, 2015Date of Patent: February 13, 2018Assignee: Dexela LimitedInventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
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Patent number: 9230311Abstract: 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: GrantFiled: February 1, 2012Date of Patent: January 5, 2016Assignee: Dexela LimitedInventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
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Patent number: 8644595Abstract: 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: GrantFiled: May 7, 2012Date of Patent: February 4, 2014Assignee: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Publication number: 20130272495Abstract: 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: ApplicationFiled: February 1, 2012Publication date: October 17, 2013Applicant: Dexela LimitedInventors: Edward Bullard, Spencer Gunn, James Brodrick, Hamdan Amin
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Publication number: 20120219202Abstract: 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: ApplicationFiled: May 7, 2012Publication date: August 30, 2012Applicant: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Patent number: 8238649Abstract: 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: GrantFiled: July 23, 2010Date of Patent: August 7, 2012Assignee: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Patent number: 7940885Abstract: 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: GrantFiled: July 2, 2009Date of Patent: May 10, 2011Assignee: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Publication number: 20110012897Abstract: 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: ApplicationFiled: July 23, 2010Publication date: January 20, 2011Applicant: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Patent number: 7817773Abstract: 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: GrantFiled: January 5, 2007Date of Patent: October 19, 2010Assignee: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Gordon D Row, Timothy Lee Moulton
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Publication number: 20090274272Abstract: 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: ApplicationFiled: July 2, 2009Publication date: November 5, 2009Applicant: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Publication number: 20090262893Abstract: 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: ApplicationFiled: May 11, 2009Publication date: October 22, 2009Applicant: Dexela LimitedInventors: Alexander Stewart, Martin Stanton, Edward Bullard
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Patent number: 7570732Abstract: 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: GrantFiled: November 22, 2006Date of Patent: August 4, 2009Assignee: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Patent number: 7545907Abstract: 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: GrantFiled: November 9, 2006Date of Patent: June 9, 2009Assignee: Dexela LimitedInventors: Alexander Stewart, Martin Stanton, Edward Bullard
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Publication number: 20080165916Abstract: 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: ApplicationFiled: January 5, 2007Publication date: July 10, 2008Applicant: DEXELA LIMITEDInventors: Martin Stanton, Alexander Stewart, Gordon D. Row, Timothy Lee Moulton
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Publication number: 20070242868Abstract: 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: ApplicationFiled: November 22, 2006Publication date: October 18, 2007Applicant: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Publication number: 20070242794Abstract: 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: ApplicationFiled: November 22, 2006Publication date: October 18, 2007Applicant: Dexela LimitedInventors: Martin Stanton, Alexander Stewart, Edward Bullard
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Publication number: 20070242797Abstract: 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: ApplicationFiled: November 9, 2006Publication date: October 18, 2007Applicant: Dexela LimitedInventors: Alexander Stewart, Martin Stanton, Edward Bullard