Patents by Inventor Chau Ngo
Chau Ngo 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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Publication number: 20240144470Abstract: An image correction system and method takes an initial volume reconstructed from a number of projections obtained by the imaging system as the sole input to the image correction system. In a first step, the image correction system reconstructs a number of reconstructed or forward projections from the initial volume. In a second and optionally concurrent step, the image correction system forms a corrected volume by applying an artificial intelligence/deep learning/convolutional neural network model to the initial volume. In a third step, the image correction system employs the forward projections and the corrected volume as inputs to an iterative reconstruction process to achieve an optimized volume as an output from the image correction system. The use of the initial volume as the only input to the image correction system simplifies the computational processes of the image processing system while providing an optimized image having improved detail and image quality.Type: ApplicationFiled: October 31, 2022Publication date: May 2, 2024Applicant: The General Hospital CorporationInventors: Dufan Wu, Giang-Chau Ngo, Quanzheng Li
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Publication number: 20230394717Abstract: An image processing system and method is provided for correcting artefacts within a three-dimensional (3D) volume reconstructed from a plurality of two-dimensional (2D) projection images of an object. The system and method is implemented on an imaging system having a processing unit operable to control the operation of a radiation source and a detector to generate a plurality of 2D projection images. The system also includes a memory connected to the processing unit and storing processor-executable code that when executed by the processing unit operates to reconstruct the 3D volume from the plurality of 2D projection images, the 3D volume defined in a pseudo parallel geometry based on a zero angle from the plurality of 2D projection images, wherein reconstructing the 3D volume comprises reconstructing a 3D virtual object defined in a pseudo parallel geometry based on the zero angle from the plurality of 2D projection images, and correcting the 3D virtual object to form the 3D volume.Type: ApplicationFiled: August 14, 2023Publication date: December 7, 2023Inventors: Vincent Bismuth, Sylvain Bernard, Giang-Chau Ngo, Charlotte Delmas, Solène Coeuret
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Publication number: 20210236299Abstract: A spinal implant including porous and solid portions is disclosed. The implant includes porous portions on upper and lower surfaces and in an interior thereof. Methods of manufacturing and implanting such implants are also disclosed.Type: ApplicationFiled: April 8, 2021Publication date: August 5, 2021Inventors: Steven Willis, Justyna Zielinska, Robin Stamp, Chau Ngo
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Patent number: 11000386Abstract: A spinal implant including porous and solid portions is disclosed. The implant includes porous portions on upper and lower surfaces and in an interior thereof. Methods of manufacturing and implanting such implants are also disclosed.Type: GrantFiled: December 13, 2018Date of Patent: May 11, 2021Assignee: Stryker European Holdings I, LLCInventors: Steven Willis, Justyna Zielinska, Robin Stamp, Chau Ngo
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Publication number: 20200188134Abstract: A bone part is repaired by a process. A first implant is attached to a first bone part. The first implant corresponds to an intraoperatively defined or an intraoperatively selected cutting path. A preoperatively defined second implant is attached to the first implant. The first implant and the second implant together augment the first bone part.Type: ApplicationFiled: December 13, 2019Publication date: June 18, 2020Inventors: Lewis Mullen, Robert Carter, Marc Esformes, Chau Ngo, Richard Wood
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Patent number: 10551458Abstract: A magnetic resonance (MR) imaging method performed by an MR imaging system includes acquiring MR data in multiple shots and multiple acquisitions (NEX), separately reconstructing the component magnitude and phase of images corresponding to the multiple shots and multiple NEX, removing the respective phase from each of the images, and combining, after removal of the respective phase, the shot images and the NEX images to produce a combined image. The method further includes using the combined image to calculate the full k-space data for each shot and NEX and replacing unacquired k-space data points with calculated k-space data points. The operations are repeated until the combined image reaches a convergence.Type: GrantFiled: June 29, 2017Date of Patent: February 4, 2020Assignee: General Electric CompanyInventors: Ek Tsoon Tan, Giang-Chau Ngo, Christopher Judson Hardy, Thomas Kwok-Fah Foo
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Publication number: 20190117408Abstract: A spinal implant including porous and solid portions is disclosed. The implant includes porous portions on upper and lower surfaces and in an interior thereof. Methods of manufacturing and implanting such implants are also disclosed.Type: ApplicationFiled: December 13, 2018Publication date: April 25, 2019Inventors: Steven Willis, Justyna Zielinska, Robin Stamp, Chau Ngo
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Patent number: 10182923Abstract: A spinal implant including porous and solid portions is disclosed. The implant includes porous portions on upper and lower surfaces and in an interior thereof. Methods of manufacturing and implanting such implants are also disclosed.Type: GrantFiled: January 13, 2016Date of Patent: January 22, 2019Assignee: Stryker European Holdings I, LLCInventors: Steven Willis, Justyna Zielinska, Robin Stamp, Chau Ngo
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Publication number: 20190004132Abstract: A magnetic resonance (MR) imaging method performed by an MR imaging system includes acquiring MR data in multiple shots and multiple acquisitions (NEX), separately reconstructing the component magnitude and phase of images corresponding to the multiple shots and multiple NEX, removing the respective phase from each of the images, and combining, after removal of the respective phase, the shot images and the NEX images to produce a combined image.Type: ApplicationFiled: June 29, 2017Publication date: January 3, 2019Inventors: Ek Tsoon Tan, Giang-Chau Ngo, Christopher Judson Hardy, Thomas Kwok-Fah Foo
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Patent number: 9939624Abstract: An inspection system that is effective to collect images of a part under inspection. This inspection system includes (a) a three axis linear motion stage; (b) a rotary fourth axis stage configured to hold and rotate an object to be inspected. This rotary fourth axis stage is mounted on the three axis linear stage; (c) a fifth axis camera and optical system mounted to one of the axes of the three axis linear motion stage. This fifth axis camera has an optical axis substantially parallel to the axis of linear motion; (d) a 45 degree mirror configured to bend the optical axis of the fifth axis camera by 90° to point towards the object; and (e) a motor configured to rotate the mirror over a range of angles to obtain a fifth axis of viewing orientation.Type: GrantFiled: May 6, 2015Date of Patent: April 10, 2018Assignee: Electro Scienctific Industries, Inc.Inventors: Daniel Freifeld, John Burnett, Minh Chau Ngo
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Publication number: 20150323773Abstract: An inspection system that is effective to collect images of a part under inspection. This inspection system includes (a) a three axis linear motion stage; (b) a rotary fourth axis stage configured to hold and rotate an object to be inspected. This rotary fourth axis stage is mounted on the three axis linear stage; (c) a fifth axis camera and optical system mounted to one of the axes of the three axis linear motion stage. This fifth axis camera has an optical axis substantially parallel to the axis of linear motion; (d) a 45 degree mirror configured to bend the optical axis of the fifth axis camera by 90° to point towards the object; and (e) a motor configured to rotate the mirror over a range of angles to obtain a fifth axis of viewing orientation.Type: ApplicationFiled: May 6, 2015Publication date: November 12, 2015Applicant: Visicon Technologies, Inc.Inventors: Daniel Freifeld, John Burnett, Minh Chau Ngo
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Patent number: 8197547Abstract: A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder dispersed throughout the polymer or may be in he form of a powder dispersed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being dispersed therein.Type: GrantFiled: July 12, 2005Date of Patent: June 12, 2012Assignee: Howmedica Osteonics Corp.Inventors: Paul Higham, Chau Ngo, Christopher DeMaria, Philip F. Williams, III
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Patent number: 7332117Abstract: A high strength hydrogel having a constant swelling pressure upon implantation and thereafter is formed by preparing a hydrogel solution and then injecting the solution into a mold and cause to gel. The molded gel is then washed in a saline solution from about one day to twelve weeks, after which the gel is irradiated for sterilization purposes, dehydrated and packaged. The pre-treatment with the use of a physiologic solution results in an implant which exhibits a constant swelling pressure profile after implantation.Type: GrantFiled: May 17, 2004Date of Patent: February 19, 2008Assignee: Howmedica Osteonics Corp.Inventors: Paul Higham, Philip F. Williams, III, John Lapszynski, Chau Ngo
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Patent number: 7282165Abstract: A wear resistant hydrogel for use as a prosthetic implant, such as for cartilage, is made by forming a solution of polyvinyl alcohol in a solvent of DMSO/water. The solution is placed in a mold and is gelated by cycling the mold in a freeze-thaw cycle at a temperature at or below 4° C. for a period of 2 to 24 hours. The hydrogel so formed is washed in a saline solution, including potassium carbonate. The hydrogel is then dehydrated to 20 to 70% water content and thereafter irradiated with Gamma radiation. The surface of the hydrogel is then cross-linked using a boric acid solution preferably between 2.5 and 5% for about 1 minute. The hydrogel is then rinsed and sterilized.Type: GrantFiled: April 27, 2004Date of Patent: October 16, 2007Assignee: Howmedica Osteonics Corp.Inventors: Philip F. Williams, III, Chau Ngo, Christopher DeMaria
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Publication number: 20060255503Abstract: A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder dispersed throughout the polymer or may be in he form of a powder dispersed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being dispersed therein.Type: ApplicationFiled: July 24, 2006Publication date: November 16, 2006Applicant: Howmedica Osteonics Corp.Inventors: Paul Higham, Chau Ngo, Christopher DeMaria, Philip Williams
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Publication number: 20050267583Abstract: A spinal implant for replacing the natural nucleus of the disc made from a polymer such as hydrogel having a radiopaque material located within the polymer. The material may be in the form of a powder dispersed throughout the polymer or may be in he form of a powder dispersed in layers or in other specific locations within the polymer. The radiopaque material is metal such as gold, tungsten, titanium, tantalum or platinum. The metal may also be in the form of a foil or wire located within the hydrogel such as polyurethane, thereby making the implant visible on x-rays. Other polymers besides hydrogel may be used with the radiopaque material being dispersed therein.Type: ApplicationFiled: July 12, 2005Publication date: December 1, 2005Applicant: Howmedica Osteonics Corp.Inventors: Paul Higham, Chau Ngo, Christopher DeMaria, Philip Williams
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Publication number: 20050236742Abstract: A wear resistant hydrogel for use as a prosthetic implant, such as for cartilage, is made by forming a solution of polyvinyl alcohol in a solvent of DMSO/water. The solution is placed in a mold and is gelated by cycling the mold in a freeze-thaw cycle at a temperature at or below 4° C. for a period of 2 to 24 hours. The hydrogel so formed is washed in a saline solution, including potassium carbonate. The hydrogel is then dehydrated to 20 to 70% water content and thereafter irradiated with Gamma radiation. The surface of the hydrogel is then cross-linked using a boric acid solution preferably between 2.5 and 5% for about 1 minute. The hydrogel is then rinsed and sterilized.Type: ApplicationFiled: April 27, 2004Publication date: October 27, 2005Applicant: Howmedica Osteonics Corp.Inventors: Philip Williams, Chau Ngo, Christopher DeMaria
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Publication number: 20040212130Abstract: A high strength hydrogel having a constant swelling pressure upon implantation and thereafter is formed by preparing a hydrogel solution and then injecting the solution into a mold and cause to gel. The molded gel is then washed in a saline solution from about one day to twelve weeks, after which the gel is irradiated for sterilization purposes, dehydrated and packaged. The pre-treatment with the use of a physiologic solution results in an implant which exhibits a constant swelling pressure profile after implantation.Type: ApplicationFiled: May 17, 2004Publication date: October 28, 2004Applicant: Howmedica Osteonics Corp.Inventors: Paul Higham, Philip F. Williams, John Lapszynski, Chau Ngo
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Patent number: 6783721Abstract: A high strength hydrogel having a constant swelling pressure upon implantation and thereafter is formed by preparing a hydrogel solution and then injecting the solution into a mold and cause to gel. The molded gel is then washed in a saline solution from about one day to twelve weeks, after which the gel is irradiated for sterilization purposes, dehydrated and packaged. The pre-treatment with the use of a physiologic solution results in an implant which exhibits a constant swelling pressure profile after implantation.Type: GrantFiled: October 30, 2001Date of Patent: August 31, 2004Assignee: Howmedica Osteonics Corp.Inventors: Paul Higham, Philip F. Williams, John Lapszynski, Chau Ngo
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Patent number: D967960Type: GrantFiled: October 17, 2019Date of Patent: October 25, 2022Assignee: Howmedica Osteonics Corp.Inventors: Aiguo Wang, Matthew P. Poggie, Nicholas Nai Guang Dong, Robert W. Klein, Chau Ngo