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    Low-field magnetic resonance imaging methods and apparatus
    51.
    发明授权
    Low-field magnetic resonance imaging methods and apparatus 有权

    公开(公告)号：US10281541B2

    公开(公告)日：2019-05-07

    申请号：US15956554

    申请日：2018-04-18

    Applicant: Hyperfine Research, Inc.

    Inventor： Michael Stephen Poole ,  Cedric Hugon ,  Christopher Thomas McNulty

    IPC: G01V3/00 ,  G01R33/385 ,  G01R33/383 ,  G01R33/44 ,  G01R33/389 ,  G01R33/421 ,  G01R33/56 ,  G01R33/38 ,  A61B5/055 ,  A61B6/00 ,  A61G13/10 ,  G01R33/34 ,  G01R33/48 ,  A61B90/00 ,  A61B50/13 ,  G01R33/36 ,  G01R33/422 ,  G01R33/3873

    Abstract: According to some aspects, a low-field magnetic resonance imaging system is provided. The low-field magnetic resonance imaging system comprises a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, the magnetics system comprising, a B0 magnet configured to produce a B0 field for the magnetic resonance imaging system at a low-field strength of less than 0.2 Tesla (T), a plurality of gradient coils configured to, when operated, generate magnetic fields to provide spatial encoding of magnetic resonance signals, and at least one radio frequency coil configured to, when operated, transmit radio frequency signals to a field of view of the magnetic resonance imaging system and to respond to magnetic resonance signals emitted from the field of view, a power system comprising one or more power components configured to provide power to the magnetics system to operate the magnetic resonance imaging system to perform image acquisition, and a power connection configured to connect to a single-phase outlet to receive mains electricity and deliver the mains electricity to the power system to provide power needed to operate the magnetic resonance imaging system. According to some aspects, the power system operates the low-field magnetic resonance imaging system using an average of less than 1.6 kilowatts during image acquisition.

    LOW-FIELD MAGNETIC RESONANCE IMAGING METHODS AND APPARATUS
    54.
    发明申请
    LOW-FIELD MAGNETIC RESONANCE IMAGING METHODS AND APPARATUS 审中-公开

    公开(公告)号：US20180238980A1

    公开(公告)日：2018-08-23

    申请号：US15956522

    申请日：2018-04-18

    Applicant: Hyperfine Research, Inc.

    Inventor： Michael Stephen Poole ,  Cedric Hugon

    IPC: G01R33/385 ,  G01R33/383 ,  G01R33/44

    Abstract: According to some aspects, a low-field magnetic resonance imaging system is provided. The low-field magnetic resonance imaging system comprises a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, the magnetics system comprising, a B0 magnet configured to produce a B0 field for the magnetic resonance imaging system at a low-field strength of less than 0.2 Tesla (T), a plurality of gradient coils configured to, when operated, generate magnetic fields to provide spatial encoding of magnetic resonance signals, and at least one radio frequency coil configured to, when operated, transmit radio frequency signals to a field of view of the magnetic resonance imaging system and to respond to magnetic resonance signals emitted from the field of view, a power system comprising one or more power components configured to provide power to the magnetics system to operate the magnetic resonance imaging system to perform image acquisition, and a power connection configured to connect to a single-phase outlet to receive mains electricity and deliver the mains electricity to the power system to provide power needed to operate the magnetic resonance imaging system. According to some aspects, the power system operates the low-field magnetic resonance imaging system using an average of less than 1.6 kilowatts during image acquisition.

    METHODS AND APPARATUS FOR MAGNETIC FIELD SHIMMING
    58.
    发明申请
    METHODS AND APPARATUS FOR MAGNETIC FIELD SHIMMING 审中-公开

    公开(公告)号：US20170276749A1

    公开(公告)日：2017-09-28

    申请号：US15466500

    申请日：2017-03-22

    Applicant: Hyperfine Research, Inc.

    Inventor： Cedric Hugon ,  Michael Stephen Poole ,  Tyler S. Ralston

    IPC: G01R33/3875

    CPC classification number: G01R33/383 ,  G01R33/243 ,  G01R33/3802 ,  G01R33/3806 ,  G01R33/381 ,  G01R33/3873 ,  G01R33/445 ,  H01F7/0278 ,  H01F7/064 ,  H01F13/003

    Abstract: According to some aspects, a method of producing a permanent magnet shim configured to improve a profile of a B0 magnetic field produced by a B0 magnet is provided. The method comprises determining deviation of the B0 magnetic field from a desired B0 magnetic field, determining a magnetic pattern that, when applied to magnetic material, produces a corrective magnetic field that corrects for at least some of the determined deviation, and applying the magnetic pattern to the magnetic material to produce the permanent magnet shim. According to some aspects, a permanent magnet shim for improving a profile of a B0 magnetic field produced by a B0 magnet is provided. The permanent magnet shim comprises magnetic material having a predetermined magnetic pattern applied thereto that produces a corrective magnetic field to improve the profile of the B0 magnetic field.

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