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公开(公告)号：US20210162236A1
公开(公告)日：2021-06-03
申请号：US17174116
申请日：2021-02-11
Applicant: ViewRay Technologies, Inc.
Inventor： Shmaryu M. Shvartsman , Gordon D. DeMeester , James F. Dempsey , John Lester Patrick
Abstract: A radiation therapy system comprises a magnetic resonance imaging (MRI) system combined with an irradiation system, which can include one or more linear accelerators (linacs) that can emit respective radiation beams suitable for radiation therapy. The MRI system includes a split magnet system, comprising first and second main magnets separated by gap. A gantry is positioned in the gap between the main MRI magnets and supports the linac(s) of the irradiation system. The gantry is rotatable independently of the MRI system and can angularly reposition the linac(s). Shielding can also be provided in the form of magnetic and/or RF shielding. Magnetic shielding can be provided for shielding the linac(s) from the magnetic field generated by the MRI magnets. RF shielding can be provided for shielding the MRI system from RF radiation from the linac.
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公开(公告)号：US11000706B2
公开(公告)日：2021-05-11
申请号：US15840941
申请日：2017-12-13
Applicant: ViewRay Technologies, Inc.
Inventor： Iwan Kawrykow , Thomas Chmielewski , James F. Dempsey
Abstract: A system including a diagnostic-quality CT scanner for imaging a patient, the diagnostic-quality CT scanner having an imaging isocenter and a radiation therapy device positioned adjacent the diagnostic-quality CT scanner, the radiation therapy device including a gantry carrying a radiation therapy beam source and having a radiation therapy isocenter separate from the imaging isocenter of the diagnostic-quality CT scanner. The system including a couch configured to position the patient for imaging and for radiation therapy by translating the patient between the diagnostic quality CT scanner and the radiation therapy device.
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公开(公告)号：US10823794B2
公开(公告)日：2020-11-03
申请号：US16195673
申请日：2018-11-19
Applicant: ViewRay Technologies, Inc.
Inventor： Shmaryu M. Shvartsman , Gordon D. Demeester , John L. Patrick , James F. Dempsey
IPC: G01R33/38 , G01R33/385 , G01R33/48 , G01R33/421 , A61N5/10
Abstract: Gradient coil assemblies for horizontal magnetic resonance imaging systems (MRIs) and methods of their manufacture. Some embodiments may be used with open MRIs and can be used with an instrument placed in the gap of the MRI. In general, concentrations of conductors or radially oriented conductors may be moved away from the gap of the MRI so as to reduce eddy currents that may be induced in any instrument placed within the gap. Systems for directly cooling primary gradient and shield coils may be utilized and various coil supporting structures may be used to assist in coil alignment or to facilitate use of an instrument in the MRI gap.
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14.发明申请公开(公告)号：US20200038688A1
公开(公告)日：2020-02-06
申请号：US16598564
申请日：2019-10-10
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Shmaryu M. Shvartsman
IPC: A61N5/10 , G01R33/422 , G01R33/48 , G01R33/36 , G01R33/421
Abstract: Systems and methods for the delivery of linear accelerator radiotherapy in conjunction with magnetic resonance imaging in which components of a linear accelerator may be placed in shielding containers around a gantry, may be connected with RF waveguides, and may employ various systems and methods for magnetic and radio frequency shielding.
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公开(公告)号：US10466319B2
公开(公告)日：2019-11-05
申请号：US15224264
申请日：2016-07-29
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Thomas Chmielewski
Abstract: A radio frequency coil is disclosed that is suitable for use with a magnetic resonance imaging apparatus. The radio frequency coil comprises first and second conductive loops connected electrically to each other by a plurality of conductive rungs. The conductive rungs each include a section that is relatively thin that will result in less attenuation to a radiation beam than other thicker sections of the rungs. Insulating regions are also disposed in areas of the radio frequency coil that are bound by adjacent rungs and the conductive loops. Portions of the insulating regions can be configured to provide a substantially similar amount of attenuation to the radiation beam as the relatively thin sections of the conductive rungs.
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Patent Agency Ranking
公开(公告)号：US10463884B2
公开(公告)日：2019-11-05
申请号：US15268366
申请日：2016-09-16
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Shmaryu M. Shvartsman
IPC: A61N5/10 , G01R33/422 , G01R33/48 , G01R33/36 , G01R33/421 , G01R33/38
Abstract: Systems and methods for the delivery of linear accelerator radiotherapy in conjunction with magnetic resonance imaging in which components of a linear accelerator may be placed in shielding containers around a gantry, may be connected with RF waveguides, and may employ various systems and methods for magnetic and radio frequency shielding.
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公开(公告)号：US20190331746A1
公开(公告)日：2019-10-31
申请号：US16509346
申请日：2019-07-11
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Thomas Chmielewski
Abstract: A radio frequency coil is disclosed that is suitable for use with a magnetic resonance imaging apparatus. The radio frequency coil comprises first and second conductive loops connected electrically to each other by a plurality of conductive rungs. The conductive rungs each include a section that is relatively thin that will result in less attenuation to a radiation beam than other thicker sections of the rungs. Insulating regions are also disposed in areas of the radio frequency coil that are bound by adjacent rungs and the conductive loops. Portions of the insulating regions can be configured to provide a substantially similar amount of attenuation to the radiation beam as the relatively thin sections of the conductive rungs.
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18.发明申请公开(公告)号：US20190022413A1
公开(公告)日：2019-01-24
申请号：US16116187
申请日：2018-08-29
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey
Abstract: Edema in tissue of a patient undergoing a course of radiation therapy or treatment can be estimated based on one or more MRI measurements used to measure changes in fluid content of various tissues. A correlation between observed changes in edema and one or more delivered fractions of radiation can be used to drive one or more clinical actions. Methods, systems, articles of manufacture, and the like are described.
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公开(公告)号：US20170371001A1
公开(公告)日：2017-12-28
申请号：US15630890
申请日：2017-06-22
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey
IPC: G01R33/00 , G01R33/28 , G01R33/3815 , G01R33/385
Abstract: Improved magnetic resonance imaging systems, methods and software are described including a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system configured for the acquisition and processing of magnetic resonance imaging data from a patient while utilizing a sparse sampling imaging technique.
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公开(公告)号：US20170367612A1
公开(公告)日：2017-12-28
申请号：US15628255
申请日：2017-06-20
Applicant: ViewRay Technologies, Inc.
Inventor： Iwan Kawrykow , Georgi Gerganov , James F. Dempsey
CPC classification number: A61B5/055 , A61B5/7257 , A61B90/37 , A61B2090/374 , G01R33/285 , G01R33/4808 , G01R33/4824 , G01R33/5608 , G01R33/56325 , G01R33/56509 , G01R33/5676 , G06T7/74
Abstract: Reference data relating to a portion of a patient anatomy during patient motion can be acquired from a magnetic resonance imaging system (MRI) to develop a patient motion library. During a time of interest, tracking data is acquired that can be related to the reference data. Partial volumetric data is acquired during the time of interest and at approximately the same time as the acquisition of the tracking data. A volumetric image of patient anatomy that represents a particular motion state can be constructed from the acquired partial volumetric data and acquired tracking data.
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