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公开(公告)号：US20220334199A1
公开(公告)日：2022-10-20
申请号：US17848287
申请日：2022-06-23
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey
IPC: G01R33/00 , A61B5/055 , G01R33/48 , A61N5/10 , 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：US11284811B2
公开(公告)日：2022-03-29
申请号：US15628255
申请日：2017-06-20
Applicant: ViewRay Technologies, Inc.
Inventor： Iwan Kawrykow , Georgi Gerganov , James F. Dempsey
IPC: A61B5/055 , A61B5/00 , A61B90/00 , G01R33/563 , G06T7/73 , G01R33/28 , G01R33/56 , G01R33/567 , G01R33/48 , G01R33/565
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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公开(公告)号：US20210298630A1
公开(公告)日：2021-09-30
申请号：US17346062
申请日：2021-06-11
Applicant: ViewRay Technologies, Inc.
Inventor： Thomas Chmielewski , James F. Dempsey
IPC: A61B5/055 , A61N5/10 , G01R33/34 , G01R33/48 , G01R33/3415
Abstract: A radiofrequency receive coil assembly can include a first conductive loop and a second conductive loop electrically connected at a node. The first and second conductive loops can extend into a treatment beam region of the radio frequency receive coil assembly through which one or more beams of ionizing radiation pass. The first conductive loop and the second conductive loop can overlap each other to provide electromagnetic isolation and/or can use a common conductor combined with a shared capacitor to provide electromagnetic isolation, with the shared capacitor or other electrical components, as well as any conductive loop overlaps, being positioned outside of the treatment beam region. These features can, among other possible advantages, minimize and homogenize attenuation of the beams of ionizing radiation by the radiofrequency receive coil assembly.
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公开(公告)号：US20210220676A1
公开(公告)日：2021-07-22
申请号：US17227155
申请日：2021-04-09
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：US20210162238A1
公开(公告)日：2021-06-03
申请号：US17085938
申请日：2020-10-30
Applicant: VIEWRAY TECHNOLOGIES, INC.
Inventor： Iwan Kawrykow , Eyad Kishawi
Abstract: An ion chamber has a chamber having an interior volume. There is a first electrode and a second electrode in the chamber and separated by a gap. A collector electrode is positioned between the first electrode and the second electrode. The collector electrode is shaped to occlude a portion of the first electrode from the second electrode.
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Patent Agency Ranking
公开(公告)号：US20210146160A1
公开(公告)日：2021-05-20
申请号：US17143885
申请日：2021-01-07
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Iwan Kawrykow
IPC: A61N5/10
Abstract: Magnetic resonance (MR) guided radiation therapy (MRgRT) enables control over the delivery of radiation based on patient motion indicated by MR imaging (MRI) images captured during radiation delivery. A method for MRgRT includes: simultaneously using one or more radiation therapy heads to deliver radiation and an MRI system to perform MRI; using a processor to determine whether one or more gates are triggered based on at least a portion of MRI images captured during the delivery of radiation; and in response to determining that one or more gates are triggered based on at least a portion of the MRI images captured during the delivery of radiation, suspending the delivery of radiation.
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公开(公告)号：US10825209B2
公开(公告)日：2020-11-03
申请号：US16105848
申请日：2018-08-20
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Qingguo Zeng , Roger Nana , John Lester Patrick , Timothy P. Eagan , Shmaryu M. Shvartsman
IPC: G06T11/00 , G01R33/48 , G01R33/56 , G01R33/561 , G06T7/00
Abstract: Systems and methods for tomographic reconstruction of an image include systems and methods for producing images from k-space data. A k-space data set of an imaged object is acquired using know k-space data acquisition systems and methods. A portion of the k-space data set is sampled so as to collect some portion of the k-space data. An image is then reconstructed from the collected portion of the k-space data set according to a convex optimization model.
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公开(公告)号：US10650532B2
公开(公告)日：2020-05-12
申请号：US16036701
申请日：2018-07-16
Applicant: ViewRay Technologies, Inc.
Inventor： Georgi Gerganov , Iwan Kawrykow
Abstract: A phase correlation method (PCM) can be used for translational and/or rotational alignment of 3D medical images even in the presence of non-rigid deformations between first and second images of a registered volume of a patient.
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公开(公告)号：US10463883B2
公开(公告)日：2019-11-05
申请号：US15242449
申请日：2016-08-19
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：US10413751B2
公开(公告)日：2019-09-17
申请号：US15445832
申请日：2017-02-28
Applicant: ViewRay Technologies, Inc.
Inventor： James F. Dempsey , Shmaryu M. Shvartsman , Iwan Kawrykow
IPC: A61N5/10
Abstract: Particle radiation therapy and planning utilizing magnetic resonance imaging (MRI) data. Radiation therapy prescription information and patient MRI data can be received and a radiation therapy treatment plan can be determined for use with a particle beam. The treatment plan can utilize the radiation therapy prescription information and the patient MRI data to account for interaction properties of soft tissues in the patient through which the particle beam passes. Patient MRI data may be received from a magnetic resonance imaging system integrated with the particle radiation therapy system. MRI data acquired during treatment may also be utilized to modify or optimize the particle radiation therapy treatment.
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