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1. 发明申请

WO2021091931A2 ACCESSIBLE AMBULANCE-COMPATIBLE MAGNETIC RESONANCE IMAGING SYSTEM FOR ON-SITE EMERGENCY DIAGNOSIS 审中-公开
公开(公告)号：WO2021091931A2
公开(公告)日：2021-05-14
申请号：PCT/US2020/058771
申请日：2020-11-04
申请人： ADVANCED IMAGING RESEARCH, INC.
发明人： SRINIVASAN, Ravi
IPC分类号： G01R33/421 , A61B5/055 , G01R33/38 , G01R33/3815 , G01R33/563 , G01R33/54 , G01R33/385 , G01R33/422 , A61B5/00 , A61B5/107 , G01R33/58 , A61B5/0042 , A61B5/1071 , A61B5/4842 , A61B5/6893 , G01R33/3802 , G01R33/3804 , G01R33/3856 , G01R33/543 , G01R33/56341
摘要： An ambulance-compatible magnetic resonance imaging (MRI) system for on-site emergency diagnosis includes a mid-field super-conducting head-only magnet including a bore and an active shield arranged relative to the magnet, a passive shield arranged relative to the magnet, the passive shield including a first flange arranged adjacent to a first side of the magnet bore, a second flange arranged adjacent to a second side of the magnet bore, wherein the first flange and the second flange are electrically connected to each other, and wherein the passive shield is operative to capture flux extending out from the magnet bore and return the flux to the magnet. An asymmetric head gradient assembly for generating magnetic gradient field in the mid-field super-conducting magnet is also provided, the magnetic gradient field being between 100-150 mT/m or having a slew rate between 400-800 T/m/s. The MRI system includes a receiver coil and a controller operatively coupled to the receive coil, the controller configured to produce an image based on data obtained from the receive coil. The MRI system is mountable in an ambulance vehicle.

2. 发明申请

WO2021246696A1 두부 전용 자기공명영상장치 审中-公开
公开(公告)号：WO2021246696A1
公开(公告)日：2021-12-09
申请号：PCT/KR2021/006390
申请日：2021-05-24
申请人： 주식회사 마이브레인
发明人： 장우주
IPC分类号： A61B5/055 , A61B5/00 , G01R33/385 , G01R33/38 , G01R33/34 , A61B5/0042 , A61B5/0046 , A61B5/6803 , A61B5/682 , G01R33/34084 , G01R33/3802 , G01R33/3854
摘要： 본 발명은 두부 전용 자기공명영상장치에 관한 것으로, 하우징 안에 설치된 주자석의 자장 중앙에 피검자의 두부를 위치시킨 상태에서 두부 전용의 영상을 획득하거나, 피검자 인체에 삽입하거나 착용하는 형태로 제작된 국부 코일을 활용하여 두부 중에서 선택된 피검 부위(예컨대, 구강 부위, 귀 부위, 눈 부위)의 영상을 획득하고, 하우징이 설치 프레임에 매달린 상태에서 영상 획득 도중에 주자석의 자장과 경사 자장 코일에 인가되는 전류에 의해 발생하는 로렌츠 힘에 기인하는 진동을 하우징 주변에 설치된 방진기로 흡수한다. 본 발명에 따르면 피검자가 인체 전체를 하우징 안으로 이동시킬 필요 없이 두부와 어깨 일부만을 하우징 안으로 이동시켜 영상을 획득하므로 장치의 크기를 소형화할 수 있고, 소규모 의원급에서도 설치하여 사용할 수 있고, 폐쇄공포증이 있는 피검자도 편하게 사용할 수 있고, 영상 촬영 중 두부를 제외한 신체 움직임이 가능하기 때문에 뇌 활동을 측정하는 기능적 자기공명영상(fMRI)을 쉽고 다양하게 획득할 수 있고, 국부 코일을 활용하기 때문에 두부 중에서 선택된 피검 부위의 영상을 높은 신호대잡음비로 획득할 수 있고, 하우징이 설치 프레임에 매달린 상태에서 영상 획득 도중에 발생하는 진동을 흡수하기 때문에 해당 진동으로 인해 생기는 소음 및 영상 음영을 제거할 수 있다.

3. 发明申请

WO2021195101A1 GRADIENT WAVEFORM DESIGN FOR LOW-FIELD MAGNETIC RESONANCE IMAGING SYSTEMS 审中-公开
公开(公告)号：WO2021195101A1
公开(公告)日：2021-09-30
申请号：PCT/US2021/023713
申请日：2021-03-23
申请人： HYPERFINE, INC.
发明人： DYVORNE, Hadrien, A. , SACOLICK, Laura , O'HALLORAN, Rafael , LAZARUS, Carole , TWIEG, Michael
IPC分类号： G01R33/385 , G01R33/44 , G01R33/565 , G01R33/3802 , G01R33/383 , G01R33/3852 , G01R33/445 , G01R33/543 , G01R33/56572
摘要： Systems and methods for generating a gradient waveform for use by a low-field MRI system to generate a gradient magnetic field are provided herein. The gradient waveform can be determined using first information indicative of the gradient waveform and second information indicative of hardware constraints of the low-field MRI system including a maximum voltage of the gradient power amplifier, a maximum slew rate of the gradient coil, a resistance of the gradient coil, and an inductance of the gradient coil. In some embodiments, the gradient waveform can be a trapezoidal gradient waveform determined to have a non-linear ramp-up portion and/or a non-linear ramp-down portion.

4. 发明申请

WO2021130006A1 ERFASSUNGSVORRICHTUNG FÜR EIN FÖRDERSYSTEM 审中-公开
公开(公告)号：WO2021130006A1
公开(公告)日：2021-07-01
申请号：PCT/EP2020/084878
申请日：2020-12-07
申请人： ROBERT BOSCH GMBH
发明人： KRAPF, Reiner , HOFFMANN, Jens , GRAESSL, Andreas , SCHLAWNE, Carolin
IPC分类号： G01N24/08 , G01R33/30 , G01R33/31 , G01R33/38 , G01N24/085 , G01R33/307 , G01R33/3802
摘要： Die Erfindung geht aus von einer Erfassungsvorrichtung, insbesondere von einer Wägevorrichtung, für ein Fördersystem (12a), insbesondere für ein Fördersystem (12a) einer Abfüllanlage, wobei das Fördersystem (12a) zumindest zu einem Transport eines, insbesondere unterteilten, Förderguts (14a; 14d) entlang eines Förderwegs (16a; 16b; 16c; 16d) vorgesehen ist. Es wird vorgeschlagen, dass die Erfassungsvorrichtung zumindest eine Magnetresonanzeinheit (18a; 18b; 18c; 18d) zu einer Erfassung eines Resonanzsignals des Förderguts (14a; 14d) während des Transports des Förderguts (14a; 14d) entlang des Förderwegs (16a; 16b; 16c; 16d) aufweist.

5. 发明申请

WO2021119109A2 SWAGED COMPONENT MAGNET ASSEMBLY FOR MAGNETIC RESONANCE IMAGING 审中-公开
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
申请人： HYPERFINE RESEARCH, INC.
发明人： HUGON, Cedric
IPC分类号： G01R33/383 , H01F7/02 , A61B5/055 , G01R33/3802 , G01R33/3806 , G01R33/3873 , G01R33/445 , H01F7/0278
摘要： 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.

6. 发明申请

WO2021055037A2 TECHNIQUES FOR DIRECT DEPOSITION OF SUPERCONDUCTOR MATERIAL AND RELATED SYSTEMS AND METHODS 审中-公开
公开(公告)号：WO2021055037A2
公开(公告)日：2021-03-25
申请号：PCT/US2020/038038
申请日：2020-06-17
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY
发明人： BRUNNER, Daniel , MUMGAARD, Robert
IPC分类号： H01F41/04 , H01F6/06 , H01F6/04 , H01L39/24 , G01R33/3815 , G01R33/3802 , H01F41/047 , H01F41/048 , H01L39/2422 , H01L39/2467
摘要： Embodiments of the present disclosure relate to depositing a superconductor directly onto a magnet structure. Superconductor deposition systems operable to handle full-sized, magnet-scale objects can be used for the depositing methods. In an embodiment, a strong base material structure (e.g., a plate) with the profile of a magnet is selected, and the method includes depositing a buffer, superconductor, and protection onto the base structure. Photolithography or laser etching methods can be used to selectively remove superconductor to form "windings" on the plate. Multiple plates can then be assembled similar to the assembly of a traditional Bitter plate magnet. Cooling channels can be integrated into the base structure, before or after superconductor deposition.

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