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    MAGNETIC RESONANCE VOLUMETRIC IMAGING
    62.
    发明申请
    MAGNETIC RESONANCE VOLUMETRIC IMAGING 有权

    公开(公告)号：US20220218223A1

    公开(公告)日：2022-07-14

    申请号：US17706458

    申请日：2022-03-28

    Applicant: ViewRay Technologies, Inc.

    Inventor： Iwan Kawrykow ,  Georgi Gerganov ,  James F. Dempsey

    IPC: A61B5/055 ,  G01R33/563 ,  G06T7/73 ,  A61B5/00 ,  G01R33/28

    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.

    Particle therapy with magnetic resonance imaging
    64.
    发明授权
    Particle therapy with magnetic resonance imaging 有权

    公开(公告)号：US11351398B2

    公开(公告)日：2022-06-07

    申请号：US16570810

    申请日：2019-09-13

    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.

    Resistive electromagnet systems and methods
    66.
    发明授权
    Resistive electromagnet systems and methods 有权

    公开(公告)号：US11209509B2

    公开(公告)日：2021-12-28

    申请号：US16179764

    申请日：2018-11-02

    Applicant: ViewRay Technologies, Inc.

    Inventor： James F. Dempsey ,  Massimo Dal Forno ,  Shmaryu M. Shvartsman ,  David L. Rayner

    IPC: G01R33/381 ,  G01R33/38 ,  G01R33/34 ,  A61B5/055

    Abstract: A magnetic resonance imaging (MRI) system having a resistive, solenoidal electromagnet for whole-body MRI may include ferromagnetic material within an envelope of the electromagnet. The system can be configured to have a field strength of at least 0.05 Tesla and its main electromagnetic field can be generated by layers of conductors instead of bundles. Certain electromagnet designs may be fabricated using non-metallic formers, such as fiberglass, and can be constructed to form a rigid object with the layers of conductors by fixing all together with an epoxy. The electromagnet may be configured to have two separated halves, which may be held apart by a fixation structure such as carbon fiber. The power supply for certain electromagnets herein may have current fluctuations, at frequencies of 180 Hz or above, of at least one part per ten thousand without requiring an additional current filter.

    RADIO FREQUENCY TRANSMIT COIL FOR MAGNETIC RESONANCE IMAGING SYSTEM
    68.
    发明申请
    RADIO FREQUENCY TRANSMIT COIL FOR MAGNETIC RESONANCE IMAGING SYSTEM 有权

    公开(公告)号：US20210356539A1

    公开(公告)日：2021-11-18

    申请号：US17344825

    申请日：2021-06-10

    Applicant: ViewRay Technologies, Inc.

    Inventor： James F. Dempsey ,  Thomas Chmielewski

    IPC: G01R33/34 ,  G01R33/48

    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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