SYSTEM FOR GENERATING A MAGNETIC FIELD

    公开(公告)号:US20210151232A1

    公开(公告)日:2021-05-20

    申请号:US17103534

    申请日:2020-11-24

    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).

    System and method for measuring velocity profiles

    公开(公告)号:US10655996B2

    公开(公告)日:2020-05-19

    申请号:US15484665

    申请日:2017-04-11

    Abstract: Method of determining a velocity profile of a fluid flowing through a conduit, the method including applying a saturation pulse on spins of magnetic field-sensitive nuclei in the fluid, measuring a signal of the fluid to determine position of the magnetic field-sensitive nuclei, the measurement carried out at a recovery time ‘TR’ and at a distance ‘d’ within the conduit, determining within the conduit a radial distance ‘r’ characterized by a local minimum in the measured signal, wherein the radial distance ‘r’ is measured from the center of the conduit, and determining a velocity profile of the fluid at the radial distance, based on the magnetic field-sensitive nuclei.

    Inline rheology/viscosity, density, and flow rate measurement

    公开(公告)号:US10598581B2

    公开(公告)日:2020-03-24

    申请号:US15292247

    申请日:2016-10-13

    Abstract: A system for performing inline measurements of flow rate, density, and rheology of a flowing fluid is disclosed, comprising: (a) a rheology measurement subsystem comprising: a horizontal tube of internal radius rH; means for measuring a velocity profile of a test fluid flowing through said horizontal tube at a distance x0 from its upstream end; and means for determining wall shear stress at a boundary between said flowing fluid and an inner surface of said horizontal tube; (b) a density measurement subsystem comprising: a vertical tube of internal radius rV in fluid connection with said horizontal tube; a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y1; and, (c) a pressure sensor for measuring the pressure of said test fluid within said vertical tube at a location y2 downstream from y1 and displaced vertically from y1 by a distance Δh.

    Apparatus For Positioning A Head of A Neonate During An MRI

    公开(公告)号:US20190328271A1

    公开(公告)日:2019-10-31

    申请号:US16095612

    申请日:2017-04-06

    Abstract: A neonate positioning assembly for positioning a head of a neonate within a radio frequency coil of a magnetic resonance imaging is provided. The neonate positioning assembly allows for the head of the neonate to be positioned within a field of view of the radio frequency coil without repositioning the neonate on the positioning assembly.

    MRI-incubator's closure assembly
    35.
    发明授权

    公开(公告)号:US10426376B2

    公开(公告)日:2019-10-01

    申请号:US14539442

    申请日:2014-11-12

    Abstract: An incubator's closure assembly adapted to shut the aperture of a magnetic resonance imaging device (MRD) having an open bore extended along the MRD's longitudinal axis with a distal end and proximal end, the bore is terminated by the aperture located in the proximal end, into which a neonate's incubator is inserted, thereby shutting the MRD bore aperture. The closure assembly comprising at least one U-shaped conduit having (i) an array of distal and proximal sealing walls, both are substantially perpendicular to the longitudinal axis and having upwards and downwards directions, and (ii) a recess in between the walls having length, in upwards to downwards direction, and width, in distal to proximal direction, each of the proximal wall and the distal wall comprising a cutout at opposite directions, and wherein in the recess, the ratio of length to width is greater than a predefined value n.

    DEVICES, SYSTEMS AND METHODS FOR REDUCING MOTION ARTIFACTS DURING IMAGING OF A NEONATE

    公开(公告)号:US20190216676A1

    公开(公告)日:2019-07-18

    申请号:US16251506

    申请日:2019-01-18

    Abstract: Generally, a system for soothing a baby during imaging by an imaging device is provided. The system can include: a capsule incubator for positioning the baby within the imaging device, the capsule incubator can include: a bottom portion having an inner surface, a bed positioned on top of the inner surface for positioning the baby thereon, and one or more members coupled to the bottom portion that are positioned in a first position to open the capsule incubator and a second position to close the capsule incubator; a vibrational device including a vibrational element that extends from outside of the capsule incubator into the capsule incubator and is coupled to the bed to cause the bed to vibrate with a predetermined vibrational frequency, thus causing the baby to vibrate with the predetermined vibrational frequency.

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