Patents by Inventor Pavel Chtcheprov
Pavel Chtcheprov 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: 12193852Abstract: Systems and related methods for stationary digital chest tomosynthesis (s-DCT) imaging are disclosed. In some aspects, systems include a stationary x-ray source array with an array of x-ray pixels configured to generate x-ray beams at different viewing angles relative to a subject to be imaged that is stationary, a stationary area x-ray detector configured to record x-ray projection images of the subject, a physiological gating apparatus for monitoring at least one physiological signal of the subject and defining a physiological phase and a time window based on the at least one physiological signal, and a computing platform configured to activate the x-ray pixels based on the physiological phase and the time window and upon receipt of the at least one physiological signal from the physiological gating apparatus in order to synchronize x-ray exposure with the at least one physiological signal of the subject.Type: GrantFiled: April 19, 2021Date of Patent: January 14, 2025Assignee: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILLInventors: Jianping Lu, Jing Shan, Yueh Lee, Otto Z. Zhou, Jabari Calliste, Christina Inscoe, Pavel Chtcheprov, Andrew Tucker
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Publication number: 20240390068Abstract: A computer-assisted system can comprise an instrument configured to be at least partially inserted through a body wall from an external workspace to an internal workspace within a body; and a controller configured to generate a first three-dimensional model of the internal workspace in which a first portion of the instrument is inserted during performance of a medical procedure using the instrument, generate a second three-dimensional model of an external workspace in which a second portion of the instrument is located during the performance of the medical procedure, based on the first three-dimensional model and the second three-dimensional model, determine an internal geometry within the internal workspace defining a reachable volume within the internal workspace within which the instrument may be positioned, and provide output related to performance of the medical procedure based on the determined internal geometry.Type: ApplicationFiled: May 21, 2024Publication date: November 28, 2024Applicant: INTUITIVE SURGICAL OPERATIONS, INC.Inventors: Steven Manuel, Daniel H. Gomez, Daniel N. Miller, John Ryan Steger, Prasad V. Upadrasta, Zhuoqun Xu, Chun hua Zheng, Pavel Chtcheprov
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Publication number: 20210236067Abstract: Systems and related methods for stationary digital chest tomosynthesis (s-DCT) imaging are disclosed. In some aspects, systems include a stationary x-ray source array with an array of x-ray pixels configured to generate x-ray beams at different viewing angles relative to a subject to be imaged that is stationary, a stationary area x-ray detector configured to record x-ray projection images of the subject, a physiological gating apparatus for monitoring at least one physiological signal of the subject and defining a physiological phase and a time window based on the at least one physiological signal, and a computing platform configured to activate the x-ray pixels based on the physiological phase and the time window and upon receipt of the at least one physiological signal from the physiological gating apparatus in order to synchronize x-ray exposure with the at least one physiological signal of the subject.Type: ApplicationFiled: April 19, 2021Publication date: August 5, 2021Inventors: Jianping Lu, Jing Shan, Yueh Lee, Otto Z. Zhou, Jabari Calliste, Christina Inscoe, Pavel Chtcheprov, Andrew Tucker
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Patent number: 10980494Abstract: Systems and related methods for stationary digital chest tomosynthesis (s-DCT) imaging are disclosed. In some aspects, systems include a stationary x-ray source array with an array of x-ray pixels configured to generate x-ray beams at different viewing angles relative to a subject to be imaged that is stationary, a stationary area x-ray detector configured to record x-ray projection images of the subject, a physiological gating apparatus for monitoring at least one physiological signal of the subject and defining a physiological phase and a time window based on the at least one physiological signal, and a computing platform configured to activate the x-ray pixels based on the physiological phase and the time window and upon receipt of the at least one physiological signal from the physiological gating apparatus in order to synchronize x-ray exposure with the at least one physiological signal of the subject.Type: GrantFiled: October 19, 2015Date of Patent: April 20, 2021Assignee: The University of North Carolina at Chapel HillInventors: Jianping Lu, Jing Shan, Yueh Lee, Otto Z. Zhou, Jabari Calliste, Christina Inscoe, Pavel Chtcheprov, Andrew Tucker
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Patent number: 10835199Abstract: Optical geometry calibration devices, systems, and related methods for x-ray imaging are disclosed. An optical-based geometry calibration device is configured to interface with a two-dimensional (2D) imaging device to perform three-dimensional (3D) imaging. The optical-based geometry calibration device includes one or more optical cameras fixed to either an x-ray source or an x-ray detector, one or more markers fixed to the x-ray detector or the x-ray source, with each of the one or more optical cameras being configured to capture at least one photographic image of one or more corresponding optical markers when each x-ray image of the object is captured, and an image processing system configured to compute positions of the x-ray source relative to the x-ray detector for each 2D projection image based on the at least one photographic image of the one or more markers.Type: GrantFiled: February 1, 2017Date of Patent: November 17, 2020Assignee: The University of North Carolina at Chapel HillInventors: Pavel Chtcheprov, Otto Z. Zhou, Jianping Lu
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Patent number: 10539708Abstract: A three-dimensional (3D) x-ray tomographic imaging system includes an x-ray source fixedly attached to a first unmanned vehicle, which can be aerial or otherwise configured for locomotion, and an x-ray detector. A vehicle controller is configured to be operated by an operator, and an optical camera is mounted to the first unmanned vehicle at a fixed position relative to the x-ray source, and an optical pattern is fixed at a position relative to the x-ray detector. The x-ray source and x-ray detector are configured to be positioned on substantially opposite sides of the object, while the x-ray source is rotated radially around the object to one or more imaging positions.Type: GrantFiled: May 4, 2017Date of Patent: January 21, 2020Assignee: The University of North Carolina at Chapel HillInventors: Otto Z. Zhou, Jianping Lu, Pavel Chtcheprov
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Patent number: 9907520Abstract: Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging are disclosed. In some aspects, an intraoral tomosynthesis imaging system includes an x-ray source array for positioning outside a mouth of a patient, wherein the x-ray source array contains multiple x-ray focal spots that are spatially distributed on an anode, an area digital x-ray detector for positioning inside the mouth of the patient, a geometry calibration mechanism for connecting the x-ray detector to the x-ray source array, an x-ray collimator for confining x-ray beams to a region of interest, a controller for regulating x-ray radiation and synchronization of the x-ray radiation with the x-ray detector, such that multiple 2D projection images of the ROI are acquired without mechanical motion of the x-ray source array, the x-ray detector, or the mouth of the patient, and a computer program and workstation for 3D tomosynthesis image reconstruction and display.Type: GrantFiled: July 8, 2016Date of Patent: March 6, 2018Assignees: The University of North Carolina at Chapel Hill, XINTEK, INC.Inventors: Otto Z. Zhou, Jianping Lu, Jing Shan, Andrew Tucker, Pavel Chtcheprov, Enrique Platin, André Mol, Laurence Rossman Gaalaas, Gongting Wu
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Publication number: 20170329037Abstract: A three-dimensional (3D) x-ray tomographic imaging system includes an x-ray source fixedly attached to a first unmanned vehicle, which can be aerial or otherwise configured for locomotion, and an x-ray detector. A vehicle controller is configured to be operated by an operator, and an optical camera is mounted to the first unmanned vehicle at a fixed position relative to the x-ray source, and an optical pattern is fixed at a position relative to the x-ray detector. The x-ray source and x-ray detector are configured to be positioned on substantially opposite sides of the object, while the x-ray source is rotated radially around the object to one or more imaging positions.Type: ApplicationFiled: May 4, 2017Publication date: November 16, 2017Inventors: Otto Z. Zhou, Jianping Lu, Pavel Chtcheprov
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Patent number: 9782136Abstract: Intraoral tomosynthesis systems, methods, and computer readable media for dental imaging can include an x-ray source containing multiple focal spots spatially distributed on one or multiple anodes in an evacuated chamber, an x-ray detector for positioning inside a mouth of a patient, a device for determining imaging geometry of the intraoral tomosynthesis system; and control electronics configured to regulate the x-ray source, by sequentially activating each of the multiple focal spots, such that multiple two dimensional (2D) projection images of the mouth of the patient are acquired from multiple viewing angles. In some aspects, the device for determining the imaging geometry can comprise a plate connectedly attached to the x-ray detector, at least one light source connectedly attached to the x-ray source, and a camera configured to capture at least one light spot produced by a projection of at least one light beam onto the plate.Type: GrantFiled: June 16, 2015Date of Patent: October 10, 2017Assignees: The University of North Carolina at Chapel Hill, Xintek, Inc.Inventors: Otto Z. Zhou, Jianping Lu, Jing Shan, Andrew Tucker, Pavel Chtcheprov, Enrique Platin, André Mol, Laurence Rossman Gaalaas, Gongting Wu
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Publication number: 20170219498Abstract: Optical geometry calibration devices, systems, and related methods for x-ray imaging are disclosed. An optical-based geometry calibration device is configured to interface with a two-dimensional (2D) imaging device to perform three-dimensional (3D) imaging.Type: ApplicationFiled: February 1, 2017Publication date: August 3, 2017Inventors: Pavel Chtcheprov, Otto Z. Zhou, Jianping Lu
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Publication number: 20160317107Abstract: Digital tomosynthesis systems, methods, and computer readable media for intraoral dental tomosynthesis imaging are disclosed. In some aspects, an intraoral tomosynthesis imaging system includes an x-ray source array for positioning outside a mouth of a patient, wherein the x-ray source array contains multiple x-ray focal spots that are spatially distributed on an anode, an area digital x-ray detector for positioning inside the mouth of the patient, a geometry calibration mechanism for connecting the x-ray detector to the x-ray source array, an x-ray collimator for confining x-ray beams to a region of interest, a controller for regulating x-ray radiation and synchronization of the x-ray radiation with the x-ray detector, such that multiple 2D projection images of the ROI are acquired without mechanical motion of the x-ray source array, the x-ray detector, or the mouth of the patient, and a computer program and workstation for 3D tomosynthesis image reconstruction and display.Type: ApplicationFiled: July 8, 2016Publication date: November 3, 2016Inventors: Otto Z. ZHOU, Jianping LU, Jing SHAN, Andrew TUCKER, Pavel CHTCHEPROV, Enrique PLATIN, André MOL, Laurence Rossman GAALAAS, Gongting WU
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Publication number: 20160106382Abstract: Systems and related methods for stationary digital chest tomosynthesis (s-DCT) imaging are disclosed. In some aspects, systems include a stationary x-ray source array with an array of x-ray pixels configured to generate x-ray beams at different viewing angles relative to a subject to be imaged that is stationary, a stationary area x-ray detector configured to record x-ray projection images of the subject, a physiological gating apparatus for monitoring at least one physiological signal of the subject and defining a physiological phase and a time window based on the at least one physiological signal, and a computing platform configured to activate the x-ray pixels based on the physiological phase and the time window and upon receipt of the at least one physiological signal from the physiological gating apparatus in order to synchronize x-ray exposure with the at least one physiological signal of the subject.Type: ApplicationFiled: October 19, 2015Publication date: April 21, 2016Inventors: Jianping Lu, Jing Shan, Yueh Lee, Otto Z. Zhou, Jabari Calliste, Christina Inscoe, Pavel Chtcheprov, Andrew Tucker
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Publication number: 20150359504Abstract: Intraoral tomosynthesis systems, methods, and computer readable media for dental imaging can include an x-ray source containing multiple focal spots spatially distributed on one or multiple anodes in an evacuated chamber, an x-ray detector for positioning inside a mouth of a patient, a device for determining imaging geometry of the intraoral tomosynthesis system; and control electronics configured to regulate the x-ray source, by sequentially activating each of the multiple focal spots, such that multiple two dimensional (2D) projection images of the mouth of the patient are acquired from multiple viewing angles. In some aspects, the device for determining the imaging geometry can comprise a plate connectedly attached to the x-ray detector, at least one light source connectedly attached to the x-ray source, and a camera configured to capture at least one light spot produced by a projection of at least one light beam onto the plate.Type: ApplicationFiled: June 16, 2015Publication date: December 17, 2015Inventors: Otto Z. Zhou, Jianping Lu, Jing Shan, Andrew Tucker, Pavel Chtcheprov, Enrique Platin, André Mol, Laurence Rossman Gaalaas, Gongting Wu