Patents by Inventor Sharon X. Wang
Sharon X. Wang 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).
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Patent number: 8965082Abstract: A method of aligning multiple volumetric sections of imaging data is provided. The method comprises aligning a primary volumetric section and a secondary volumetric section which is adjacent to the primary volumetric imaging section, for moving the secondary volumetric section into alignment with the primary volumetric section. A related apparatus for performing the method is also provided.Type: GrantFiled: November 18, 2010Date of Patent: February 24, 2015Assignee: Koninklijke Philips N.V.Inventors: Sharon X. Wang, Thomas Laurence, David Sowards-Emmerd
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Patent number: 8787620Abstract: A nuclear imaging system includes a crystal identification system which receives a flood image which includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. A crystal identification processor partitions the flood image into a plurality of candidate regions with a watershed segmentator implementing a watershed algorithm. The candidate regions are linked in an adjacency graph, and then classified as background or relevant, where relevant regions contain a peak within the watershed lines. The regions are then assigned to a crystal according to an objective function and an assignability score. A calibration processor maps the peaks to a rectangular grid.Type: GrantFiled: July 31, 2013Date of Patent: July 22, 2014Assignee: Koninklijke Philps N.V.Inventors: Thomas Laurence, Sharon X. Wang, Jerome J. Griesmer, Thomas Blaffert, Zhiqiang Hu, Steffen Renisch
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Patent number: 8750569Abstract: A nuclear imaging system (10) includes a crystal identification system (40) which receives a flood image (30) which includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. A crystal identification processor (42) partitions the flood image (30) into a plurality of regions (56), each region being masked to correspond to one of an array of nuclear detectors. A model image (62) is generated in which the at least one Gaussian models represents the identified peaks. Misidentified peaks in the model image (62) in which locations of the peaks in the flood image (30) differ from the corresponding scintillator crystal are determined and the locations of the misidentified peaks in the flood image (30) are corrected. A calibration processor (43) corrects geometric distortions in acquired projection data according to the corrected peaks.Type: GrantFiled: April 27, 2011Date of Patent: June 10, 2014Assignee: Koninklijke Philips N.V.Inventors: Thomas Laurence, Sharon X. Wang, Jerome J. Griesmer
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Publication number: 20130315454Abstract: A nuclear imaging system includes a crystal identification system which receives a flood image which includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. A crystal identification processor partitions the flood image into a plurality of candidate regions with a watershed segmentator implementing a watershed algorithm. The candidate regions are linked in an adjacency graph, and then classified as background or relevant, where relevant regions contain a peak within the watershed lines. The regions are then assigned to a crystal according to an objective function and an assignability score. A calibration processor maps the peaks to a rectangular grid.Type: ApplicationFiled: July 31, 2013Publication date: November 28, 2013Applicant: KONINKLIJKE PHILIPS N.V.Inventors: Thomas LAURENCE, Sharon X. WANG, Jerome J. GRIESMER, Thomas BLAFFERT, Zhiqiang HU, Steffen RENISCH
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Publication number: 20130077827Abstract: A nuclear imaging system (10) includes a crystal identification system (40) which receives a flood image (30) which includes a plurality of peaks, each peak responsive to radiation detected by a corresponding scintillator crystal. A crystal identification processor (42) partitions the flood image (30) into a plurality of regions (56), each region being masked to correspond to one of an array of nuclear detectors. A model image (62) is generated in which the at least one Gaussian models represents the identified peaks. Misidentified peaks in the model image (62) in which locations of the peaks in the flood image (30) differ from the corresponding scintillator crystal are determined and the locations of the misidentified peaks in the flood image (30) are corrected. A calibration processor (43) corrects geometric distortions in acquired projection data according to the corrected peaks.Type: ApplicationFiled: April 27, 2011Publication date: March 28, 2013Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Thomas Laurence, Sharon X. Wang, Jerome J. Griesmer
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Publication number: 20120288177Abstract: A method of aligning multiple volumetric sections of imaging data is provided. The method comprises aligning a primary volumetric section and a secondary volumetric section which is adjacent to the primary volumetric imaging section, for moving the secondary volumetric section into alignment with the primary volumetric section. A related apparatus for performing the method is also provided.Type: ApplicationFiled: November 18, 2010Publication date: November 15, 2012Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Sharon X. Wang, Thomas Laurence, David Sowards-Emmerd
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Patent number: 7186686Abstract: A composition is disclosed that comprises a mixture of polypeptides of opposite charge and an excipient selected from the group consisting of arginine, lysine, glutamic acid, sodium dodecyl sulfate, beta-hydroxy cyclodextrin, and beta-cyclodextrin sulfobutyl ether.Type: GrantFiled: May 6, 2003Date of Patent: March 6, 2007Assignee: Genentech, Inc.Inventors: James Q. Oeswein, John R. Smikahl, Sharon X. Wang, Douglas A. Yeung
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Patent number: 7031993Abstract: A method for computing a natural logarithm function includes partitioning a mantissa region between 1 and 2 into N equally spaced sub-regions; precomputing a reference point ai of each of the N equally spaced sub-regions, where i=0, . . . ,N?1; selecting N sufficiently large so that, within each sub-region, a first degree polynomial in m computes log(m) to within a preselected degree of accuracy for any m within the sub-region, where m is a mantissa of a binary floating point representation of a variable x; and computing a value of log(x) for a binary floating point representation of x stored in a memory of a computing device utilizing the first degree polynomial in m.Type: GrantFiled: February 18, 2000Date of Patent: April 18, 2006Assignee: GE Medical Systems Global Technology Company, LLCInventors: Min Xie, Sharon X. Wang
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Patent number: 7013034Abstract: A method for reconstructing an image of an object utilizing a computed tomographic (CT) imaging system having a radiation source configured to project a beam of radiation through an object and towards a multislice detector array configured to sense attenuation of the radiation passing through the object; the method includes helically scanning an object to acquire a plurality of slices of projection data, generating a separate projection dataset for each of N separate detector rows wherein the separate projection datasets include detector row projection data and detector row conjugate projection data, combining the detector row projection data and the detector row conjugate projection data, and helically weighting the combined projection data using a combined helical weighting and conjugate data weighting algorithm such that a greater weight is applied to combined center row projection data than to at least one outermost detector row projection data.Type: GrantFiled: October 10, 2002Date of Patent: March 14, 2006Assignee: GE Medical Systems Global Technology Company, LLCInventors: Sharon X. Wang, Thomas L. Toth, Piero U. Simoni, Stephen W. Metz
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Patent number: 6991790Abstract: A stable aqueous pharmaceutical formulation comprising a therapeutically effective amount of antibody not subjected to prior lyophilization, a buffer maintaining the pH in the range from about 4.5 to about 6.0, a surfactant and a polyol is described, along with uses for such a formulation.Type: GrantFiled: November 28, 2000Date of Patent: January 31, 2006Assignee: Genentech, Inc.Inventors: Xanthe M. Lam, James Q. Oeswein, Boonsri Ongpipattanakul, Zehra Shahrokh, Sharon X. Wang, Robert P. Weissburg, Rita L. Wong
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Patent number: 6885764Abstract: A method and apparatus for quickly rendering thick CT slice images wherein the data corresponding to an optimal number of slice images to be combined to generate a thick image and the data set required to generate the thick image are determined as a function of an optimal Z-smoothing factor and wherein Z-smoothing is implemented in software that performs quickly and is useable with any helical weighting algorithm and Z-smoothing function.Type: GrantFiled: November 21, 2001Date of Patent: April 26, 2005Assignee: GE Medical Systems Global Technology Company, LLCInventors: Sharon X. Wang, Piero U. Simoni, Thomas Toth, Stephen Metz
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Publication number: 20040071329Abstract: A method for reconstructing an image of an object utilizing a computed tomographic (CT) imaging system having a radiation source configured to project a beam of radiation through an object and towards a multislice detector array configured to sense attenuation of the radiation passing through the object; the method includes helically scanning an object to acquire a plurality of slices of projection data, generating a separate projection dataset for each of N separate detector rows wherein the separate projection datasets include detector row projection data and detector row conjugate projection data, combining the detector row projection data and the detector row conjugate projection data, and helically weighting the combined projection data using a combined helical weighting and conjugate data weighting algorithm such that a greater weight is applied to combined center row projection data than to at least one outermost detector row projection data.Type: ApplicationFiled: October 10, 2002Publication date: April 15, 2004Inventors: Sharon X. Wang, Thomas L. Toth, Piero U. Simoni, Stephen W. Metz
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Publication number: 20030195142Abstract: A composition is disclosed that comprises a mixture of polypeptides of opposite charge and an excipient selected from the group consisting of arginine, lysine, glutamic acid, sodium dodecyl sulfate, beta-hydroxy cyclodextrin, and beta-cyclodextrin sulfobutyl ether.Type: ApplicationFiled: May 6, 2003Publication date: October 16, 2003Inventors: James Q. Oeswein, John R. Smikahl, Sharon X. Wang, Douglas A. Yeung
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Patent number: 6584165Abstract: One aspect of the present invention is a method for reconstructing computed tomographic (CT) images. The method includes generating a plurality of projection data, calculating a plurality of base weights using the projection data for each series of images to be reconstructed, storing the base weights in an external memory, and applying a z-smoothing module to the base weights to determine a plurality of final weights. The view weighting process then includes applying the final weights to the projection data for each image.Type: GrantFiled: July 10, 2002Date of Patent: June 24, 2003Assignee: GE Medical Systems Global Technology Company, LLCInventors: Sharon X. Wang, Roy-Arnulf Helge Nilsen, John A. Fusco
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Publication number: 20030097063Abstract: A method and apparatus for quickly rendering thick CT slice images wherein the data corresponding to an optimal number of slice images to be combined to generate a thick image and the data set required to generate the thick image are determined as a function of an optimal Z-smoothing factor and wherein Z-smoothing is implemented in software that performs quickly and is useable with any helical weighting algorithm and Z-smoothing function.Type: ApplicationFiled: November 21, 2001Publication date: May 22, 2003Inventors: Sharon X. Wang, Piero U. Simoni, Thomas Toth, Stephen Metz
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Patent number: 6559122Abstract: A composition is disclosed that comprises a mixture of polypeptides of opposite charge and an excipient selected from the group consisting of arginine, lysine, glutamic acid, sodium dodecyl sulfate, beta-hydroxy cyclodextrin, and beta-cyclodextrin sulfobutyl ether.Type: GrantFiled: March 30, 2000Date of Patent: May 6, 2003Assignee: Genentech, Inc.Inventors: James Q. Oeswein, John R. Smikahl, Sharon X. Wang, Douglas A. Yeung
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Patent number: 6490334Abstract: There is therefore provided, in one aspect, a method for imaging an object utilizing a computed tomographic (CT) imaging system having a rotating gantry, a multislice detector array on the rotating gantry and using at least n>1 rows of detector channels, and a radiation source on the rotating gantry configured to project a beam of radiation towards the multislice detector array through an object to be imaged. The method includes helically scanning the object with the CT imaging system at a pitch p>n to acquire projection data from the n rows of detector channels; applying a combined helical weight and conjugate weight to at least a portion of the acquired projection data to produce virtual projection data compensating for incomplete helical row data of the acquired projection data; and reconstructing an image of the object utilizing the acquired projection data and the virtual projection data.Type: GrantFiled: June 29, 2001Date of Patent: December 3, 2002Assignee: GE Medical Systems Global Technology Company, LLCInventors: Sharon X. Wang, Thomas L. Toth, Piero U. Simoni, Stephen W. Metz, Jiang Hsieh
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Patent number: 6418184Abstract: One aspect of the present invention is a method for reconstructing an image of an object utilizing a computed tomographic (CT) imaging system. The method includes steps of: helically scanning an object; interpolating an axial fan beam set of projection data as a vector function {right arrow over (R)}a from a fan beam set of projection data from the helical scan {right arrow over (R)}hi, where i=1, . . .Type: GrantFiled: December 29, 2000Date of Patent: July 9, 2002Assignee: GE Medical Systems Global Technology Company, LLCInventors: Sharon X. Wang, Stephen W. Metz, John A. Fusco
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Patent number: 6415013Abstract: There is therefore provided, in one embodiment of the present invention, a method for reconstructing a volume image of an object. The method includes steps of scanning an object with a multislice computed tomographic (CT) imaging system having a multislice detector array to acquire projection data of a volume of the object; filtering the acquired projection data; and backprojecting the filtered projection data to reconstruct voxels of the volume image. The multislice detector array has a plurality of rows and columns of detector elements and the backprojecting includes interpolating the filtered projection data across both rows and columns of the multislice detector array.Type: GrantFiled: December 28, 2000Date of Patent: July 2, 2002Assignee: GE Medical Systems Global Technology Company, LLCInventors: Jiang Hsieh, Stephen W. Metz, Sharon X. Wang
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Patent number: 6171586Abstract: A stable aqueous pharmaceutical formulation comprising a therapeutically effective amount of an antibody not subjected to prior lyophilization, a buffer maintaining the pH in the range from about 4.5 to about 6.0, a surfactant and a polyol is described, along with uses for such a formulation.Type: GrantFiled: June 12, 1998Date of Patent: January 9, 2001Assignee: Genentech, Inc.Inventors: Xanthe M. Lam, James Q. Oeswein, Boonsri Ongpipattanakul, Zahra Shahrokh, Sharon X. Wang, Robert P. Weissburg, Rita L. Wong