Shutting assembly for closing an entrance of an MRI device

    公开(公告)号:US10018692B2

    公开(公告)日:2018-07-10

    申请号:US14540163

    申请日:2014-11-13

    Inventor: Uri Rapoport

    CPC classification number: G01R33/288 G01R33/421 G01R33/422

    Abstract: A shutting assembly for a magnetic resonance imaging device (MRD) bore aperture, comprising at least one first movable portion and at least one second portion affixed to the MRD, wherein the shutting assembly further comprising a normally closed or normally open sliding mechanism. The sliding mechanism couples at least one first moveable portion to at least one second portion affixed to the MRD, thereby enabling a reciprocal movement of at least one first moveable portion parallel to the MRD bore aperture in an upwards and downwards directions in respect to at least one second portion affixed to the MRD.

    EXTENDABLE RADIOFREQUENCY SHIELD FOR MAGNETIC RESONANCE IMAGING DEVICE

    公开(公告)号:US20180164391A1

    公开(公告)日:2018-06-14

    申请号:US15886110

    申请日:2018-02-01

    Inventor: Uri RAPOPORT

    CPC classification number: G01R33/422 A61B5/0555 A61G11/00

    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.

    EXTENDABLE RADIOFREQUENCY SHIELD FOR MAGNETIC RESONANCE IMAGING DEVICE

    公开(公告)号:US20180164389A1

    公开(公告)日:2018-06-14

    申请号:US15459723

    申请日:2017-03-15

    Inventor: Uri RAPOPORT

    CPC classification number: G01R33/422 A61B5/0555 A61G11/00 A61G2210/50

    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.

    Method and system for a universal NMR/MRI console

    公开(公告)号:US09864034B2

    公开(公告)日:2018-01-09

    申请号:US13903042

    申请日:2013-05-28

    Inventor: Uri Rapoport

    CPC classification number: G01R33/54 G01R33/3607 G01R33/3852

    Abstract: A method and system are provided for providing values for control signals for a pulsed magnetic resonance spectrometer such as an NMR spectrometer or an MRI apparatus. The AC output(s) corresponding to a particular signal (e.g. a magnetization or gradient pulse or pulse sequence) originating from a source spectrometer is measured and stored by an independent control unit. The digital output of the independent control unit is then connected to the digital input of the control electronics of a target pulsed magnetic resonance spectrometer, the value of the digital output varied until the AC output(s) of the appropriate signal source of the target spectrometer matches that of the corresponding output(s) of the source spectrometer, corrected, if necessary, for differences in magnetic field strengths.

    ANALYSIS OF NUCLEAR MAGNETIC RESONANCE SPECTRA WITH NON-STATIONARY PEAKS

    公开(公告)号:US20170356974A1

    公开(公告)日:2017-12-14

    申请号:US15465317

    申请日:2017-03-21

    Abstract: A method of determining a NMR prediction result of a sample is provided. The method can include receiving a NMR spectrum of the sample and/or identifying a section of a ppm range in the NMR spectrum having a non-stationary peak. The method can include determining a modified data point for the NMR spectrum based on data points in the identified section. The modified data point can be determined such that the modified data point is a weighted average value of the data points in the identified section in the NMR spectrum. The method can include replacing the identified section in the NMR spectrum with the modified data point for the NMR spectrum to determine a modified NMR spectrum. The method can include determining the NMR prediction result of the sample based on the modified NMR spectrum and a calibration vector (e.g., using a partial least square (PLS) analysis).

    Magnetic resonance-based systems for detecting contaminating particles and methods thereof

    公开(公告)号:US09759673B2

    公开(公告)日:2017-09-12

    申请号:US13906803

    申请日:2013-05-31

    Inventor: Uri Rapoport

    CPC classification number: G01N24/08 G01N24/084 G01N24/085 G01R33/5608

    Abstract: The present invention provides an MRI-based hazard screening system for detecting contaminating particles within or on the surface of an object, the system characterized by a. a sampling environment adapted for at least partially confining said object; said sampling environment is in fluid communication with at least one inlet and at least one fluid outlet; b. a fluid streamer for streaming a fluid, throughout said at least one inlet, towards said sampling environment where said fluid effectively interfaces said object; and further throughout said at least one outlet; c. an MRI device in fluid communication with said at least one outlet, adapted for providing an image of said particles streamed by said fluid thereby screening the presence of said particles within or on the surface of said object.

    INLINE RHEOLOGY/VISCOSITY, DENSITY, AND FLOW RATE MEASUREMENT

    公开(公告)号:US20170097293A1

    公开(公告)日:2017-04-06

    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.

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