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    MEASUREMENT OF PROPERTIES OF FLUIDS USING MRI
    21.
    发明申请
    MEASUREMENT OF PROPERTIES OF FLUIDS USING MRI 有权
    使用MRI测量流体的性质

    公开(公告)号：US20140049257A1

    公开(公告)日：2014-02-20

    申请号：US13939330

    申请日：2013-07-11

    Applicant: ASPECT IMAGING LTD.

    Inventor： Uri RAPOPORT

    IPC: G01F1/716

    CPC classification number: G01N11/04 ,  G01F1/716 ,  G01N24/085 ,  G01N2011/0006 ,  G01N2011/0086 ,  G01R33/5608 ,  G01R33/56308

    Abstract: A method of determining rheological properties of a fluid. The method includes: providing an open-bore tube and defining within the bore a three dimensional grid (3DG) of voxels; defining at least an inlet cross section (ICS) and an outlet cross section (OCS); defining a volume of interest within the bore between the ICS and the OCS; obtaining rheological properties of the fluid; applying a pressure gradient to the bore between the ICS and the OCS; and nuclear magnetic resonance imaging the fluid within the volume of interest to determine various aspects of the fluid.

    Abstract translation: 确定流体的流变性质的方法。 该方法包括：提供开孔管并在孔内限定体素的三维网格（3DG）; 至少限定入口横截面（ICS）和出口横截面（OCS）; 在ICS和OCS之间确定一个感兴趣的内容; 获得流体的流变特性; 对ICS和OCS之间的孔施加压力梯度; 和核磁共振成像感兴趣体积内的流体以确定流体的各个方面。

    Permanent magnet arrangement with solid facing plate and scanning magnet head
    22.
    发明授权
    Permanent magnet arrangement with solid facing plate and scanning magnet head 有权
    永磁体配置，带有实心面板和扫描磁头

    公开(公告)号：US08604794B2

    公开(公告)日：2013-12-10

    申请号：US13255205

    申请日：2010-04-21

    Applicant: Uri Rapoport

    Inventor： Uri Rapoport

    IPC: G01V3/00

    CPC classification number: G01R33/3806 ,  G01R33/3802 ,  G01R33/383 ,  G01R33/3873

    Abstract: The present invention provides a permanent magnet arrangement, comprising: a. a mobile permanent magnet grouping; b. a facing plate constructed from ferromagnetic material; c. a an air gap defined by the spacing between said permanent magnet grouping and said facing plate; d. a yoke of predetermined shape formed from magnetically permeable material, said yoke holding said front surfaces of said magnets in a substantially parallel arrangement relative to said facing plate; e. means for individually moving said permanent magnets in said magnet grouping along an axis generally perpendicular to said facing plate; f. means for moving said permanent magnet grouping in a plane generally parallel to said facing plate; wherein a magnetic field within an active volume located in said air gap between said permanent magnet grouping and said facing plate is provided, said magnetic field sufficiently homogeneous for performance of MRI.

    Abstract translation: 本发明提供一种永磁体装置，包括：a。 移动永磁体分组; b。 由铁磁材料构成的面板; C。 由所述永磁体组和所述面对板之间的间隔限定的气隙; d。 由磁导材料形成的预定形状的磁轭，所述磁轭将所述磁体的所述前表面相对于所述相对板基本平行地布置; e。 用于沿着大致垂直于所述相对板的轴线分别移动所述磁体组中的所述永磁体的装置; F。 用于在大致平行于所述相对板的平面中移动所述永磁体组的装置; 其中提供位于所述永磁体组和所述面对板之间的所述气隙中的有效体积内的磁场，所述磁场足够均匀以用于MRI的执行。

    SYSTEM FOR GENERATING A MAGNETIC FIELD
    24.
    发明公开
    SYSTEM FOR GENERATING A MAGNETIC FIELD 审中-公开

    公开(公告)号：US20240296983A1

    公开(公告)日：2024-09-05

    申请号：US18525283

    申请日：2023-11-30

    Applicant: Aspect Imaging Ltd.

    Inventor： Uri RAPOPORT ,  Yoram COHEN ,  Yair GOLDFARB

    IPC: H01F7/02

    CPC classification number: H01F7/0278 ,  H01F7/02 ,  H01F7/0205 ,  H01F7/021 ,  H01F7/0221 ,  H01F7/0226 ,  H01F7/0231 ,  H01F7/0242 ,  H01F7/0215 ,  H01F7/0236

    Abstract: Generally, a system for generating a magnetic field having a desired magnetic field strength and/or a desired magnetic field direction is provided. The system can include a plurality of magnetic segments and/or a plurality of ferromagnetic segments. Each magnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. Each ferromagnetic segment can be positioned adjacent to at least one of the plurality of magnetic segments. In various embodiments, a size, shape, positioning and/or number of magnetic segments and/or ferromagnetic segments in the system, as well as a magnetization direction of the magnetic segments can be predetermined based on, for example, predetermined parameters of the system (e.g., a desired magnetic field strength, direction and/or uniformity of the magnetic field, a desired elimination of a magnetic fringe field and/or total weight of the system) and/or based on a desired application of the system (e.g., performing a magnetic resonance imaging of at least a portion of a patient and/or performing a magnetic resonance spectroscopy of a sample).

    Magnetic resonance device
    25.
    发明授权
    Magnetic resonance device 有权

    公开(公告)号：US11885857B2

    公开(公告)日：2024-01-30

    申请号：US17307604

    申请日：2021-05-04

    Applicant: Aspect Imaging Ltd.

    Inventor： Uri Rapoport

    IPC: G01R33/38 ,  G01R33/383

    CPC classification number: G01R33/3802 ,  G01R33/383 ,  Y10T29/4902 ,  Y10T29/49826 ,  Y10T29/49945 ,  Y10T29/49959

    Abstract: A cage with a fastening system (1) in a magnetic resonance device (MRD) is disclosed, said cage in an MRD comprising (a) M pole pieces (45) (M≥2); (b) N side magnets (20) (N≥2), said side magnets substantially enclosing said pole pieces and thereby defining a magnetic envelope and enclosed volume therein; (c) N side walls (10), said side walls substantially enclosing said side magnets; (d) P face walls (30) (P≥2); and (e) a plurality of fastening rods (100); wherein each of said fastening rods physically interconnects at least one pair of side walls, passing through at least one of said side magnets and at least one of said pole pieces.

    METHOD OF ASSEMBLING A MAGNETIC RESONANCE DEVICE
    28.
    发明公开
    METHOD OF ASSEMBLING A MAGNETIC RESONANCE DEVICE 有权

    公开(公告)号：US20230148452A9

    公开(公告)日：2023-05-11

    申请号：US17307604

    申请日：2021-05-04

    Applicant: Aspect Imaging Ltd.

    Inventor： Uri RAPOPORT

    IPC: G01R33/38 ,  G01R33/383

    CPC classification number: G01R33/3802 ,  G01R33/383 ,  Y10T29/49826 ,  Y10T29/49959 ,  Y10T29/4902 ,  Y10T29/49945

    Abstract: A cage with a fastening system (1) in a magnetic resonance device (MRD) is disclosed, said cage in an MRD comprising (a) M pole pieces (45) (M≥2); (b) N side magnets (20) (N≥2), said side magnets substantially enclosing said pole pieces and thereby defining a magnetic envelope and enclosed volume therein; (c) N side walls (10), said side walls substantially enclosing said side magnets; (d) P face walls (30) (P≥2); and (e) a plurality of fastening rods (100); wherein each of said fastening rods physically interconnects at least one pair of side walls, passing through at least one of said side magnets and at least one of said pole pieces.

    Extendable radiofrequency shield for magnetic resonance imaging device
    30.
    发明授权
    Extendable radiofrequency shield for magnetic resonance imaging device 有权

    公开(公告)号：US11029378B2

    公开(公告)日：2021-06-08

    申请号：US15459723

    申请日：2017-03-15

    Applicant: Aspect Imaging Ltd.

    Inventor： Uri Rapoport

    IPC: G01R33/422 ,  A61G11/00 ,  A61B5/055

    Abstract: A radiofrequency (RF) shielding channel for a magnetic resonance imaging (MRI) device is provided. The RF shielding channel can include at least one conductive layer having a proximal end and a distal end. The RF shielding channel can include a connector to removably attach the proximal end of the at least one conductive layer to a bore of the MRI device. The at least one conductive layer can be extended in a longitudinal direction with respect to the bore of the MRI device between a first predetermined longitudinal dimension and a second predetermined longitudinal dimension, such that a RF shield is formed from the bore of the MRI device to the distal end of the at least one conductive layer. The RF shield can prevent an external RF radiation from entering the bore of the MRI device and/or an RF radiation emitted by the MRI device from exiting the bore.

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