公开(公告)号：WO2021119079A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/063933

申请日：2020-12-09

Applicant: HYPERFINE RESEARCH, INC. ,  POOLE, Michael, Stephen

Inventor： HUGON, Cedric

IPC: G01R33/383 ,  H01F7/02

Abstract: An assembly for providing a B0 magnetic field for a magnetic resonance imaging (MRI) system, the assembly comprising: a plurality of rods extending along a common longitudinal direction and positioned to form a bore extending along the common longitudinal direction, the plurality of rods including a first rod, the first rod comprising: ferromagnetic segments, each having a net magnetization in a plane that is substantially perpendicular to the common longitudinal direction; and non-ferromagnetic segments.

公开(公告)号：WO2018098267A1

公开(公告)日：2018-05-31

申请号：PCT/US2017/063000

申请日：2017-11-22

Applicant: HYPERFINE RESEARCH, INC. ,  POOLE, Michael, Stephen ,  HUGON, Cedric ,  DYVORNE, Hadrien, A. ,  REARICK, Todd ,  SACOLICK, Laura ,  JORDAN, Jeremy, Christopher ,  MCNULTY, Christopher, Thomas ,  ROTHBERG, Jonathan, M. ,  KATZE, Alan, B. Jr. ,  MILESKI, William, J.

Inventor： POOLE, Michael, Stephen ,  HUGON, Cedric ,  DYVORNE, Hadrien, A. ,  REARICK, Todd ,  SACOLICK, Laura ,  JORDAN, Jeremy, Christopher ,  MCNULTY, Christopher, Thomas ,  ROTHBERG, Jonathan, M. ,  KATZE, Alan, B. Jr. ,  MILESKI, William, J.

IPC: A61B5/055 ,  G01R33/20 ,  G01R33/32 ,  G01R33/34

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 Bo magnet configured to produce a Bo field for the magnetic resonance imaging system at a low-field strength of less than.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.

公开(公告)号：WO2017165513A1

公开(公告)日：2017-09-28

申请号：PCT/US2017/023583

申请日：2017-03-22

Applicant: HYPERFINE RESEARCH, INC.

Inventor： HUGON, Cedric ,  POOLE, Michael, Stephen ,  RALSTON, Tyler, S.

IPC: G01R15/00 ,  G01R33/3873 ,  H01F41/02

Abstract: According to some aspects, a method of producing a permanent magnet shim configured to improve a profile of a B 0 magnetic field produced by a B 0 magnet is provided. The method comprises determining deviation of the B 0 magnetic field from a desired B 0 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 B 0 magnetic field produced by a B 0 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 B 0 magnetic field.

Abstract translation: 根据一些方面，提供了一种制造永磁体垫片的方法，该永磁体垫片被配置为改善由B 0 产生的B 0 0磁场的分布 >提供磁铁。 该方法包括确定B 0 0磁场与期望的B 0磁场的偏差，确定当施加到磁性材料时产生校正磁场的磁性图案 其对所确定的偏差中的至少一些进行校正，并且将磁性图案施加到磁性材料以产生永磁体垫片。 根据一些方面，提供了一种永磁体垫片，用于改善由B0 / 0磁体产生的B0 / 0磁场的轮廓。 永久磁铁垫片包括施加有预定磁性图案的磁性材料，其产生校正磁场以改善B 0 0磁场的分布。

公开(公告)号：WO2021118987A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/063763

申请日：2020-12-08

Applicant: HYPERFINE RESEARCH, INC.

Inventor： HU, Tie ,  HUGON, Cedric

IPC: G01R33/38 ,  G01R33/383 ,  B23P19/04 ,  B25J15/00 ,  B25J15/02

Abstract: Systems and methods for automated assembly of a BO magnet assembly (402) for use in a point-of-care 1100 system are provided herein. A gripper (422) capable of gripping a permanent magnet (10) with a high clamping force is provided for positioning the permanent magnet (10) in the B0 magnet assembly (402) in accordance with a permanent magnet layout (232). A robot (406) having multiple degrees of freedom is provided for positioning the gripper (422). Components of the system described herein have been developed to withstand the effects of strong magnetic forces generated by high-strength magnetic fields surrounding the B0 magnet assembly (402).

公开(公告)号：WO2021119063A1

公开(公告)日：2021-06-17

申请号：PCT/US2020/063906

申请日：2020-12-09

Applicant: HYPERFINE RESEARCH, INC.

Inventor： HUGON, Cedric ,  DYVORNE, Hadrien, A. ,  POOLE, Michael, Stephen

IPC: G01R33/383 ,  G01R33/565

Abstract: An apparatus (200, 300, 600, 900) for providing a B0 magnetic field for a magnetic resonance imaging system (100, 700). The apparatus (200, 300, 600, 900) includes at least one permanent B0 magnet (122, 210, 910) to contribute a magnetic field to the B0 magnetic field for the MRI system (100, 700) and a ferromagnetic frame (220) configured to capture and direct at least some of the magnetic field generated by the B0 magnet (122, 210, 910). The ferromagnetic frame (220) includes a first post (222a, 922) having a first end (223a) and a second end (223b), a first multi-pronged member (224a, 924) coupled to the first end (223a), and a second multi-pronged member (224b, 924) coupled to the second end (223b), wherein the first and second multi-pronged members (224a, 224b, 924) support the at least one permanent B0 magnet (122, 210, 910).

公开(公告)号：WO2020139476A2

公开(公告)日：2020-07-02

申请号：PCT/US2019/061663

申请日：2019-11-15

Applicant: HYPERFINE RESEARCH, INC.

Inventor： O'HALLORAN, Rafael ,  HUGON, Cedric ,  SACOLICK, Laura ,  DYVORNE, Hadrien, A.

IPC: G01R33/389 ,  G01R33/44 ,  G01R33/565

Abstract: An apparatus for controlling at least one gradient coil of a magnetic resonance imaging (MRI) system. The apparatus may include at least one computer hardware processor; and at least one computer-readable storage medium storing processor executable instructions that, when executed by the at least one computer hardware processor, cause the at least one computer hardware processor to perform a method. The method may include receiving information specifying at least one target pulse sequence; determining a corrected pulse sequence to control the at least one gradient coil based on the at least one target pulse sequence and a hysteresis model of induced magnetization in the MRI system caused by operation of the at least one gradient coil; and controlling, using the corrected gradient pulse sequence, the at least one gradient coil to generate one or more gradient pulses for imaging a patient.

公开(公告)号：WO2019226533A1

公开(公告)日：2019-11-28

申请号：PCT/US2019/033090

申请日：2019-05-20

Applicant: HYPERFINE RESEARCH, INC.

Inventor： POOLE, Michael, Stephen ,  HUGON, Cedric ,  MCNULTY, Christopher, Thomas

IPC: G01R33/20 ,  G01R33/28 ,  G01R33/34 ,  G01R33/38 ,  G01R33/383 ,  G01R33/387 ,  G01R33/3873 ,  G01R33/44 ,  G01R33/48 ,  H01F7/02

Abstract: An apparatus for providing a Bo magnetic field for a magnetic resonance imaging system. The apparatus includes at least one first B 0 magnet configured to produce a first magnetic field to contribute to the Bo magnetic field for the magnetic resonance imaging system, the at least one first B 0 magnet comprising a first plurality of permanent magnet rings including at least two rings with respective different heights.

公开(公告)号：WO2021119109A2

公开(公告)日：2021-06-17

申请号：PCT/US2020/063980

申请日：2020-12-09

Applicant: HYPERFINE RESEARCH, INC.

Inventor： HUGON, Cedric

IPC: G01R33/383 ,  H01F7/02 ,  A61B5/055 ,  G01R33/3802 ,  G01R33/3806 ,  G01R33/3873 ,  G01R33/445 ,  H01F7/0278

Abstract: Systems and methods for providing a Bo magnetic field for a magnetic resonance imaging (MRI) system using swaged permanent magnet components are provided. A first apparatus comprises a cylindrical shell forming a bore extending along a common longitudinal direction, the cylindrical shell comprising: a first plurality of ferromagnetic rings including a first ferromagnetic ring with an angularly varying magnetization orientation, and a second plurality of rings. A second apparatus comprises ferromagnetic rings including a first ferromagnetic ring and a second ferromagnetic ring, the first ferromagnetic ring having a first magnetization and the second ferromagnetic ring having a second magnetization, wherein: the first magnetization and the second magnetization have first radial and axial components and second radial and axial components, respectively; and the first radial and axial components are different than the second radial and axial components.