Spectrometer Components Patents (Class 324/318)
  • Patent number: 10386430
    Abstract: A magnetic resonance imaging (MRI) radio frequency (RF) coil array configured to operate in a transmit (Tx) mode or in a receive (Rx) mode, the MRI RF coil array comprising at least one single-layer RF coil element. The at least one RF coil element includes a resonant LC coil, a matching Tx/Rx switch circuit, and a preamplifier. The matching and Tx/Rx switch circuit, when operating in Tx mode, electrically isolates the LC coil from the preamplifier upon the LC coil resonating with a primary coil at the primary coil's working frequency. The LC coil, upon resonating with the primary coil at the working frequency, generates a local amplified Tx field based on an induced current in the LC coil. A magnitude or a phase of the induced current is independently adjustable. The matching and Tx/Rx switch circuit, when in Rx mode, electrically connects the LC coil with the preamplifier.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: August 20, 2019
    Assignee: Quality Electrodynamics, LLC
    Inventors: Xiaoyu Yang, Haoqin Zhu, Tsinghua Zheng
  • Patent number: 10386437
    Abstract: Disclosed herein is a method for generating an MRI image in which a radial or spiral k-chamber path with a constant angular increment Psi is used to take an MRI image, the angular increment Psi being in the angular range of between 5-55 degrees or being in the corresponding supplementary angle Psi? and is selected according to the formula PsiN,M=pi/(N+1/(M+tau?1)). Alternatively, for an angular increment Psi which deviates from the angle increment of the optimal distribution of n radial profiles Psiopt=180°/n, the minimum scanning efficiency of the angular increment Psi for n>21 profiles is greater than 0.95, the angular increment Psi is in an angular range of 5° to less than 68.7537°, in particular between 5-55 degrees or in the corresponding supplementary angle Psi?. Compared to the arrangement of the radial or spiral profile using the golden angle of 111.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: August 20, 2019
    Assignee: DENTSPLY SIRONA Inc.
    Inventors: Stefan Wundrak, Volker Rasche
  • Patent number: 10386530
    Abstract: A coaxial nuclear magnetic resonance (NMR) probe and related methods are described herein. The coaxial NMR probe includes a housing with a fluid inlet, a fluid outlet, a longitudinal axis, and an interior volume. The housing contains a fluid sample that is analyzed by the probe. The coaxial NMR probe also includes an elongated conductor disposed along the longitudinal axis of the housing. The elongated conductor generates an oscillating electromagnetic field within the interior volume of the housing. The oscillating electromagnetic field produces a NMR signal within the fluid sample. The elongated conductor may also be used to receive this NMR signal. The NMR signal is then analyzed to determine information about the fluid sample. Various NMR pulse sequences for use with this coaxial probe and other coaxial probes are also described herein.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: August 20, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yi-Qiao Song, Soumyajit Mandal, Yiqiao Tang, Martin D. Hurlimann, Jeffrey Paulsen
  • Patent number: 10379186
    Abstract: In some aspects, a method of operating a magnetic resonance imaging system comprising a B0 magnet and at least one thermal management component configured to transfer heat away from the B0 magnet during operation is provided. The method comprises providing operating power to the B0 magnet, monitoring a temperature of the B0 magnet to determine a current temperature of the B0 magnet, and operating the at least one thermal management component at less than operational capacity in response to an occurrence of at least one event.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: August 13, 2019
    Assignee: Hyperfine Research, Inc.
    Inventors: Jonathan M. Rothberg, Jeremy Christopher Jordan, Michael Stephen Poole, Laura Sacolick, Todd Rearick, Gregory L. Charvat
  • Patent number: 10378803
    Abstract: Systems and methods for improving the performance of dilution refrigeration systems are described. Electrostatic cryogenic cold traps employed in the helium circuit of a dilution refrigerator improve the removal efficiency of contaminants from the helium circuit. An ionization source ionizes at least a portion of a refrigerant that includes helium and number of contaminants. The ionized refrigerant passes through an electrostatic cryogenic cold trap that includes a number of surfaces at one or more temperatures along at least a portion of the fluid passage between the cold trap inlet and the cold trap outlet. A high voltage source coupled to the surfaces to causes a first plurality of surfaces to function as electrodes at a first potential and a second plurality of surfaces to function as electrodes at a second potential. As ionized contaminants release their charge on the electrodes, the contaminants bond to the electrodes.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 13, 2019
    Assignee: D-WAVE SYSTEMS INC.
    Inventor: Sergey Uchaykin
  • Patent number: 10379179
    Abstract: A fastening system for attaching an NMR probe to an NMR magnet includes a discoid insert and a retention system that is rigidly connected to the magnet and on which the insert can be mounted. A form-fitting, variable-force connection is established between the NMR probe and the retention system using a spring element. The probe attaches to the insert by a plurality of integral, rigid retaining elements that are of an invariable fixed length. The spring element and the retaining elements are designed geometrically such that in a first, opened state the connection between the insert and the retaining elements has a mechanical backlash between 0.5 mm and 5 mm when the spring element is relaxed. In a second, closed state the connection between the insert and the retaining elements has no mechanical backlash when the spring element is under mechanical tension.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: August 13, 2019
    Assignee: BRUKER BIOSPIN AG
    Inventors: Roger Meister, Markus Mayer, Alexander Krahn
  • Patent number: 10371779
    Abstract: A magnetic resonance imaging (MRI) system, comprising a magnetic resonance imaging scanner. The MR scanner comprises a main magnet providing a substantially uniform main magnetic field B0 for a subject under observation, the subject represented by a spatial distribution of magnetizations; a radio frequency (RF) coil system configured to irradiate a plurality of radio frequency (RF) pulses into a region of interest of the subject and to detect a plurality of RF response signals emitted from the region of interest; a gradient coil system configured to provide a perturbation of the main magnetic field B0 using a gradient pulse sequence that causes the RF response signals to encode the spatial distribution of magnetizations in a Fourier domain on a plurality of read-out paths; and a controller in communication with the RF coil system and the gradient coil system to synchronously provide the RF coil system with the plurality of RF pulses and the gradient coil system with the gradient pulse sequence.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: August 6, 2019
    Assignee: The Johns Hopkins University
    Inventors: Daniel Alfredo Herzka, John Andrew Derbyshire
  • Patent number: 10365236
    Abstract: There is provided a Nuclear Magnetic Resonance (NMR) measurement cell for use with a solution enabling the introduction of a gas into said solution. The measurement cell includes at least a detection volume designed to be installed in a static magnetic field of an NMR spectrometer, and includes in said detection volume, a gas introduction zone, a measurement chamber for the solution at a distance from the gas introduction zone and a network of conduits for the solution formed to set up fluid communication between the gas introduction zone and the measurement chamber. The gas introduction zone includes at least one gas inlet in the network of conduits, to generate bubbles in the gas introduction zone only. There is also provided a method of manufacturing such a measurement cell and a measurement assembly including such a measurement cell.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 30, 2019
    Assignee: Comissariat a l'energie atomique et aux energies alternatives
    Inventors: Alexandre Causier, Patrick Berthault, Thomas Berthelot, Guillaume Carret
  • Patent number: 10365337
    Abstract: A superconducting magnet coil arrangement has multiple superconducting coils and at least one of the superconducting coils is provided with a secondary coil of insulated resistive wire mechanically attached to a surface of the superconducting coil.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: July 30, 2019
    Assignee: Siemens Healthcare Limited
    Inventors: Eugene Astra, Hugh Alexander Blakes, Peter Jonathan Davis, Yunxin Gao, Graham Hutton, Matthew John Longfield
  • Patent number: 10361002
    Abstract: A method and apparatus for setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients are provided. The method of setting an imaging environment of a medical apparatus based on one or more signals transmitted from a plurality of clients includes transmitting information regarding an imaging operation of the medical apparatus to the plurality of clients, receiving one or more response signals with respect to the information from the plurality of clients, and setting the imaging environment of the medical apparatus based on the one or more response signals.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nasir Desai, Toshihiro Rifu, Yeon-ju Lee, Jin-mo Jung
  • Patent number: 10359378
    Abstract: In one aspect, the disclosure relates to a nuclear magnetic resonance transceiver including: (a) a variable-frequency electromagnetic signal generator with (i) a frequency input and (ii) an EM signal output; (b) an electronic frequency controller including (i) a frequency output coupled to the frequency input of the variable-frequency EM signal generator, (ii) an intermediate frequency set-point input, and (iii) an intermediate frequency measurement input; (c) an NMR transmission probe with an EM signal input coupled to the EM signal output of the variable-frequency EM signal generator; (d) an NMR receiving probe with an EM signal output; and (e) an electronic mixer with (i) a first input coupled to the EM signal output of the NMR receiving probe, (ii) a second input coupled to the EM signal output of the variable-frequency EM signal generator, and (iii) a mixed EM signal output coupled to the frequency measurement input of the frequency controller.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: July 23, 2019
    Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
    Inventors: Evangelyn C. Alocilja, Yilun Luo
  • Patent number: 10353029
    Abstract: A magnetic resonance imaging (MRI) device includes at least one switching cell that uses a first switcher to switch paths for two of four radio frequency (RF) signals is used to output the two RF signals. The MRI device includes RF coils including a plurality of coils for receiving RF signals from an object to which magnetic fields are applied; an image processor for creating a magnetic resonance image based on the received RF signals; and a switching unit for switching connections between a plurality of input ports connectable to the plurality of coils and a plurality of output ports connectable to the image processor, wherein the switching unit includes at least one switching cell including four input ports, two output ports connected to two of the four input ports, and a first switcher for switching between paths extended from second and third input ports among the four input ports.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: July 16, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Yean Koh, Han Lim Lee
  • Patent number: 10353026
    Abstract: In order to provide interventional access during an image-guided interventional procedure, while increasing the signal-to-noise ratio for generated images compared to a single loop coil, a local coil includes a single coil element disposed around an opening through the local coil and two coil elements positioned on opposite sides of the single coil element. The opening provides access for an interventional tool used during the image-guided interventional procedure.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: July 16, 2019
    Assignees: SIEMENS AKTIENGESELLSCHAFT, QUALITY ELECTRODYNAMICS (QED)
    Inventors: Matthew Finnerty, Arne Hengerer, Volker Matschl, Gregory Weisberg, Tsinghua Zheng
  • Patent number: 10353023
    Abstract: A magnetic resonance imaging (MRI) system (100) has a radio frequency system (114, 116, 120, 124, 126) for acquiring magnetic resonance data (142, 144, 156). The radio frequency system includes a coil (124) with multiple antenna elements (126). The MRI system further includes a processor (133) for controlling the magnetic resonance imaging system. Execution of instructions (140, 170, 172, 174) cause the processor to: acquire (200) calibration magnetic resonance data (142) from a first field of view within the imaging zone using the multiple antenna elements, calculate (202, 300, 302, 304, 400) modified magnetic resonance data (144) by interpolating the calibration magnetic resonance data to a second field of view, calculate (204, 500, 502, 504, 602) a coil sensitivity kernel (146) by deconvolving the modified magnetic resonance data, and calculate (206, 604, 610) a coil sensitivity (148) by transforming each coil sensitivity kernel into image space.
    Type: Grant
    Filed: November 27, 2014
    Date of Patent: July 16, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventor: Tim Nielsen
  • Patent number: 10353024
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a plurality of first coil elements and a connector. The first coil elements are embedded in a couchtop on which a subject is placed. The connector is provided in such a region of the couchtop that is positioned on the inside of the loop of at least one of the first coil elements. It is possible to attach and detach a second coil element different from the first coil elements to and from the connector.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: July 16, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Sadanori Tomiha, Kazuya Okamoto, Manabu Ishii, Satoshi Imai, Mitsuo Takagi, Miyuki Ota
  • Patent number: 10353038
    Abstract: In a method and apparatus for the examination of a predetermined volume portion of an object with a magnetic resonance (MR) fingerprinting procedure, an MR signal curve for voxels of the volume portion is acquired, and a comparison of the MR signal curve of the respective voxel is made with stored MR signal curves in order to determine the stored MR signal curve that conforms most closely to the MR signal curve, with the result of the comparison then being made available as an output. The comparison with the MR signal curve of the voxel is (initially) performed with a specific number of signal points of the MR signal curve. A quality measure is determined with which the quality of the most closely conforming stored MR signal curves is determined. The performance of the comparison for the respective voxel is repeated if the quality measure is below a predetermined quality threshold value, with the number of signal points being first increased by a difference number.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: July 16, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: David Grodzki, Esther Raithel
  • Patent number: 10345402
    Abstract: The embodiments relate to a head coil for an imaging MRT system. The head coil includes a head coil upper part and a head coil lower part. At least the head coil upper part may be tilted relative to the head coil lower part, and an internal connecting cable of the head coil is embodied as a rigid-flex circuit board with a rigid region and a flexible region.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: July 9, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Daniel Driemel
  • Patent number: 10345403
    Abstract: A radio frequency (RF) surface coil and a magnetic resonance device employing the same are disclosed. The disclosed RF surface coil for the magnetic resonance device comprises: a plurality of conductor elements connected in series so as to form a loop-shaped surface coil; and a variable inductance unit provided in at least one of the plurality of conductor elements so as to adjust inductance, wherein the variable inductance unit comprises a conductor bar and a coupler for attachably/detachably coupling the conductor bar to/from at least one of the plurality of conductor elements.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyoungnam Kim
  • Patent number: 10345404
    Abstract: According to one embodiment, magnetic resonance imaging apparatus includes a transmission coil, a plurality of reception channels, transmission/reception circuitry, and processing circuitry. The transmission coil transmits an RF wave to a subject. The reception channels receive MR signals generated from the subject. The transmission/reception circuitry controls the transmission coil to change the flip angle of a nucleus contained in the subject and excited by the transmitted RF wave. The processing circuitry determines whether the reception channels include an impaired channel, based on the comparison between the distributions of the signal values of the received MR signals with respect to the changing flip angles among the reception channels.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: July 9, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Takahiro Ohmure, Sadanori Tomiha
  • Patent number: 10345414
    Abstract: Example embodiments associated with characterizing a sample using NMR fingerprinting are described. One example NMR apparatus includes an NMR logic that repetitively and variably samples a (k, t, E) space associated with an object to acquire a set of NMR signals that are associated with different points in the (k, t, E) space. The NMR signals are produced in response to a FISP-MRF pulse sequence. Sampling is performed with t and/or E varying in a non-constant way. The NMR apparatus may also include a signal logic that produces an NMR signal evolution from the NMR signals and a characterization logic that characterizes a tissue in the object as a result of comparing acquired signals to reference signals. Acquired signals are corrected using data describing an inhomogeneous B1 field produced by the NMR apparatus while the set of NMR signals are acquired.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: July 9, 2019
    Assignee: Case Western Reserve University
    Inventors: Vikas Gulani, Yong Chen, Nicole Seiberlich, Mark Griswold
  • Patent number: 10338055
    Abstract: A multi-frequency inductive sensing system can be used for spectrographic material analysis of a conductive target material (such as tissue) based on electrical impedance spectroscopy. An inductive senor can be driven with an excitation current at multiple sensor excitation frequencies (?) to project a time-varying magnetic field into a sensing area on the surface of the target material, inducing eddy currents within the target material. The inductive sensor can be characterized by a sensor impedance Z(?) as a function of the sensor excitation frequency (?), and the resulting induced eddy currents. Multiple sensor impedance Zs(?) measurements, at the multiple sensor excitation frequencies (?), can be determined, which represent electromagnetic properties of the target material (such as permittivity ?, permeability ?, and resistivity ?), based on the induced eddy currents.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: July 2, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: George Pieter Reitsma
  • Patent number: 10335035
    Abstract: A shim coil device for compensating for basic magnetic field inhomogeneities during medical magnetic resonance imaging of a breast of a patient, said shim coil has a housing with a contact surface that configures to bear against a patient, and at least one shim coil element having a shim coil axis. The shim coil is arranged on the patient such that the at least one shim coil axis has an angle of inclination ? to the contact surface and/or to a patient surface, where ? is ?45° and ? is ?135°.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: July 2, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stephan Biber, Ralf Ladebeck, Kuan Jin Lee, Sebastian Martius, Elisabeth Weiland
  • Patent number: 10340578
    Abstract: An electron-nuclear double resonance resonator, having a loop-gap resonator and an elongated lead; the loop-gap resonator comprises a plurality of arc-shaped conductive plates, and the elongated lead connects the arc-shaped conductive plates into a radio-frequency coil; the loop-gap resonator resonates at an electron resonance frequency, and the radio-frequency coil resonates at a nuclear resonance frequency; with the structure of the loop-gap resonator, the separation between an electric field and a magnetic field can be accelerated to ensure the maximization of the ratio of the magnetic field to the electric field inside a resonant resonator; and with the elongated lead, the impact of the lead to a resonance frequency and the mode of the loop-gap resonator is prevented as much as possible, and meanwhile the conductive plates of the loop-gap resonator can be connected into the radio-frequency coil.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: July 2, 2019
    Assignee: Wuhan Institute of Physics And Mathematics, Chinese Academy of Sciences
    Inventors: Chaoyang Liu, Quan Tao, Yugui He
  • Patent number: 10330750
    Abstract: A method and apparatus for polarizing nuclear or electronic spins is disclosed. An analyte is passed near a surface that has a plurality of spin defect centers implanted within 10 nm of the surface. The spin defect centers are exposed to a magnetic field and illumination to produce polarized spins. The polarized spins then induce spin polarization in the analyte.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: June 25, 2019
    Assignee: Research Foundation of the City University of New York
    Inventor: Carlos A. Meriles
  • Patent number: 10330753
    Abstract: A power electronic unit for an amplifier of an imaging magnetic resonance tomography (MRT) system is provided. The power electronic unit includes at least one printed circuit board, on which a plurality of transistors are arranged. Ports (e.g., drain and source) of the plurality of transistors are connected together by electrically conductive connections, and the plurality of transistors are all arranged on one side of the at least one printed circuit board. An output line or cable parallel to the connections, at least in sections, runs on the opposing side of the printed circuit board and may be connected or is connected with or without further interconnected elements (e.g., a balun) to transmitting coils of the MRT.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: June 25, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Adam Albrecht
  • Patent number: 10330754
    Abstract: A stator-less electric motor for an MRI system is provided. The stator-less electric motor includes a body, a rotor rotatable connected to the body, and at least one coil winding disposed on the rotor. The at least one coil winding is arranged so as to rotate the rotor when energized via an electrical current in the presence of a magnetic field generated by a magnet assembly of the MRI system.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: June 25, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Daniel Garcia, Tamer Fahed Khalaf, Jason Monclair Pittman, Anton Linz, William John Bonneau, Chinmoy Goswami, Vandana Rallabandi, Rahul Radhakrishna Pillai, Srinivas Satya Sai Mallampalli, Suma Memana Narayana Bhat, Viswanathan Kanakasabai
  • Patent number: 10324146
    Abstract: A method and apparatus for receiving (RX) radio-frequency (RF) signals suitable for MRI and/or MRS from a plurality of MRI “coil elements” (antennae), each contained in one or a plurality of body-coil parts, wherein the body-coil parts are easily assemble-able into a body-coil assembly (e.g., in some embodiments, a cylindrical body-coil assembly) with shield elements that are overlapped and/or concentric, and wherein the body-coil assembly is readily disassemble-able for easier shipping, and wherein the body-coil parts are optionally usable individually as transmit (TX) and/or receive (RX) coil elements for MRI. In some embodiments, the system provides for repeatable assembly and disassembly for ease of maintenance (such as frequency tuning and impedance matching) such that the body-coil assembly can be fully assembled and tested, then taken apart for less costly and easier shipping (with reduced risk of damage) and then reassembled at the destination for operation in an MRI system.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: June 18, 2019
    Assignee: Life Services, LLC
    Inventors: Brandon J. Tramm, Charles A. Lemaire, Matthew T. Waks, Scott M. Schillak
  • Patent number: 10324152
    Abstract: A passive apparatus including a plurality of resonators increases signal-to-noise ratio of radiofrequency signals emitted by a specimen and captured by an MRI machine. The apparatus increases the magnetic field component of radiofrequency energy during signal transmission from the MRI machine to the specimen, and/or reception of signals from the specimen to the MRI machine. Moreover, the apparatus enhances specimen safety by substantially avoiding unwanted generation of an electric field, or an increase in the electric field component of the RF energy. Use of the apparatus improves the images generated by the MRI machine, and/or reduces the time necessary for the MRI machine to capture the image.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 18, 2019
    Assignee: TRUSTEES OF BOSTON UNIVERSITY
    Inventors: Xin Zhang, Stephan Anderson, Guangwu Duan, Xiaoguang Zhao
  • Patent number: 10324151
    Abstract: In a method for generating an image data set for display, magnetic resonance data of a patient are provided to a computer that contains parameters of the protons underlying the measured magnetic resonance signal in measured voxels. The image data set is generated dependent on at least one user specification, taking into consideration at least two parameters per voxel.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: June 18, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: David Grodzki
  • Patent number: 10324147
    Abstract: According to some aspects, a magnetic resonance imaging system comprising a B0 magnet configured to produce a B0 magnetic field for the magnetic resonance imaging system, the B0 magnet comprising at least one first B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, at least one second B0 magnet to produce a magnetic field to contribute to the B0 magnetic field for the magnetic resonance imaging system, wherein the at least one first B0 magnet and the at least one second B0 magnet are arranged relative to one another so that an imaging region is provided there between, a surface configured to support a patient anatomy within the imaging region, and a positioning member coupled to the B0 magnet and configured to allow the B0 magnet to be tilted to position the planar surface at a corresponding incline.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: June 18, 2019
    Assignee: Hyperfine Research, Inc.
    Inventors: Christopher Thomas McNulty, Michael Stephen Poole
  • Patent number: 10324145
    Abstract: A transverse-electromagnetic (TEM) radio-frequency coil (1) for a magnetic resonance system, especially for a magnetic resonance imaging system, includes a coil (1) in which at least one of the opposite end regions of the elongate strip section (4) of each TEM coil element (2) has a lateral extension (6) transverse to a longitudinal extent of the strip section (4). These lateral extensions (6) combine with strip sections (4) to form L- or U-shaped TEM coil elements (2) and provide ‘ring-like’ current contributions resulting in a reduction of the z-sensitivity compared with a conventional TEM coil. The result is a coil array having TEM coil elements (2) that provide smaller sensitivity profiles in the z-direction, yet preserve the characteristics of a well-defined RF ground, e.g. via an RF shield or screen (3). The reduced field of view in z-direction not only reduces noise reception but also reduces the SAR generated in those regions during transmission.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: June 18, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Christoph Leussler, Daniel Wirtz
  • Patent number: 10317502
    Abstract: The invention provides for a magnetic resonance imaging system (100) for acquiring magnetic resonance data (142, 144) from an imaging zone (108).
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: June 11, 2019
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Paul Royston Harvey, Michael Jozef Duijvestijn, Steve Lorenc
  • Patent number: 10310035
    Abstract: A body coil for an MRI system has a conductor management and a tuning/detuning circuit. The tuning/detuning circuit is connected to the conductor management, and used to subject the conductor management to tuning/detuning control by a control signal. The tuning/detuning circuit has a control signal interface, a switch diode unit and an AC/DC conversion circuit. The control signal interface receives the control signal. There is at least one switch diode unit, respectively series-connected on at least one antenna rod and/or at least one end ring of the body coil conductor management. The AC/DC conversion circuit has a rectifying circuit, for converting the power of an input RF emission signal in the MRI system to a DC current, the DC current being used to provide a DC current for the switch diode unit to be turned on. The body coil reduces the cost of a DC power supply, and this reduces heat generated by the diodes.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 4, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Wen Ming Li, Tong Tong, Markus Vester, JianMin Wang
  • Patent number: 10310046
    Abstract: According to one embodiment, an MRI apparatus includes an amplifier and processing circuitry. The amplifier amplifies an RF pulse and outputs the amplified RF pulse to an RF coil. The processing circuitry performs correction processing on an envelope of an RF pulse to be inputted to the amplifier so as to compensate nonlinear input-output characteristics of the amplifier. As to this correction processing, the processing circuitry selects a correction information item out of a plurality of correction information items prepared for a corresponding plurality of imaging conditions and performs the correction processing by using the selected information item.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: June 4, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Haruki Nakamura, Kazuyuki Soejima
  • Patent number: 10310038
    Abstract: A method for supplying electrical power to a gradient amplifier that drives a gradient coil for a magnetic resonance imaging system is provided. The method includes predicting a gradient voltage required to drive the gradient coil for a scan based at least in part on a gradient coil model. The method further includes calculating a voltage set point for a power supply based at least in part on the predicted gradient voltage. The method further includes providing electrical power to the gradient amplifier via the power supply based at least in part on the calculated voltage set point. The gradient coil model is based at least in part on historical data acquired prior to the scan.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: June 4, 2019
    Assignee: General Electric Company
    Inventors: Margaret Ann Wiza, Melissa Jean Freeman, Syed Saad Asif Ali, Douglas John Link, Michael Thomas Rose, Tanzania Samone Sewell
  • Patent number: 10310032
    Abstract: Fluid channeling system (150) for NMR system (100), characterized in that the channeling system (150) includes an exhaust circuit (160) of the NMR system (100) comprising a first fluid circulation branch (161) and a second fluid circulation branch (162).
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 4, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Eric Bouleau, Daniel Lee
  • Patent number: 10310036
    Abstract: A magnetic resonance imaging (MRI) apparatus and a method of detecting an error of the MRI apparatus are provided. The MRI apparatus includes a radio frequency (RF) coil configured to transmit and receive an RF signal, a bias circuit configured to tune and detune the RF coil, and a monitoring circuit configured to monitor a parameter among a bias voltage and a bias current of the bias circuit, based on a monitoring pattern. The MRI apparatus further includes a controller configured to determine whether the bias circuit is in an abnormal state, based on a determination criteria and the monitored parameter, and either one or both of the monitoring pattern and the determination criteria vary based on a status of the bias circuit.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-sub Kim, Raghavendra Putti
  • Patent number: 10302715
    Abstract: A flexible magnetic resonance coil apparatus, an applicator, and a method for arranging a magnetic resonance coil apparatus on an object under examination are provided. The magnetic resonance coil apparatus includes at least one coil element and at least one carrier structure. The at least one carrier structure is configured to adapt its geometric shape.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: May 28, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Peter Gall, Andreas Greiser, Martin Harder, Stephan Zink
  • Patent number: 10303355
    Abstract: In a method for planning a medical imaging examination, as well as a graphical interface and a medical imaging apparatus and a storage medium for implementing the method, a planning environment for the planning of the medical imaging examination is provided on a touch display of a graphical interface, at least one imaging parameter for the medical imaging examination is specified by a manual input on the touch display, and information is provided on the touch display in response to the manual input, the information being presented haptically on the touch display.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: May 28, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Marc Beckmann, Anja Jaeger, Stephan Nufer, Thorsten Speckner, Jens Thoene
  • Patent number: 10295623
    Abstract: An MRI system for imaging one or more subjects is provided. The MRI system includes a magnet assembly and an MRI controller. The magnet assembly includes an RF coil for transmitting a first set of RF pulses into the one or more subjects at an initial Larmor frequency. The MRI controller is configured to electronically communicate with the RF coil and to adjust a resonant frequency of the RF coil such that the RF coil transmits a second set of RF pulses into the one or more subjects at one or more subsequent Larmor frequencies that are different from the initial Larmor frequency.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: May 21, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Victor Taracila, Fraser Robb, Eddy Boskamp, Daniel Chirayath, Shuying Huang, Madhwesha Rao, James Wild
  • Patent number: 10295634
    Abstract: In an apparatus and method for pulse optimization adjustment a checking is made as to whether the optimization time resulting from a calculation time for pulse optimization of a pulse sequence section for a modifiable time interval at a predefined gradient grid density, and an associated implementation time, exceeds a real time resulting from the time interval and a buffer time. The gradient grid density for pulse optimization is reduced by a factor f if the optimization time exceeds the real time.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: May 21, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: David Grodzki, Stephan Stoecker
  • Patent number: 10295621
    Abstract: An HF resonator assembly generates at least two independent alternating magnetic fields in a test volume of a magnetic resonance apparatus. The HF resonator assembly includes a first pair of flat coils that form a first HF resonator and comprise electrical conductor portions that surround a planar surface portion. The flat coils are arranged on opposing sides of the test volume, on coil support plates that are mutually parallel and in parallel with the longitudinal axis. A second pair of flat coils forms a second HF resonator on second coil support plates. The projections of the planar surface portions of the flat coils in each of the first pair of flat coils and the second pair of flat coils overlap in part, but not completely, when viewed in a direction perpendicular to the respective planar surface portions.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: May 21, 2019
    Assignee: BRUKER BIOSPIN AG
    Inventor: Nicolas Freytag
  • Patent number: 10295626
    Abstract: In one embodiment, an MRI apparatus includes receiving coils each including an A/D converter configured to convert an MR signal received from an object into a digital signal by sampling the MR signal, a clock generation circuit configured to generate a reference clock of the sampling, and a radio transmission circuit configured to wirelessly transmit a digitized MR signal; and a main body configured to wirelessly receive the digitized MR signal and generate an image of the object by reconstructing the digitized MR signal, wherein one of the receiving coils selected as a reference receiving coil by the main body is configured to transmit the reference clock to each of other receiving coils by radio or by wire; and each of the other receiving coils is configured to synchronize the reference clock generated by the clock generation circuit with the reference clock transmitted from the reference receiving coil.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 21, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroshi Hayakawa, Tomoyuki Yoshida, Sadanori Tomiha, Kazuyuki Soejima
  • Patent number: 10288714
    Abstract: In a magnetic resonance imaging apparatus, a transmission RF coil is configured to emit an RF pulse generated by using a first clock. In addition to an echo signal emitted from a patient, a reception RF coil is configured to further receive the RF pulse emitted by the transmission RF coil and configured to transmit, via a wireless communication, a multiplexed signal in which the echo signal digitalized by using a second clock, the RF pulse, and the second clock are multiplexed together. Wireless receiving circuitry is configured to receive the multiplexed signal via a wireless communication. Correcting circuitry is configured to correct the phase of the echo signal on the basis of the RF pulse and the second clock restored from the multiplexed signal received via the wireless communication. Reconstructing circuitry is configured to reconstruct an image by using the corrected echo signal.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: May 14, 2019
    Assignee: Toshiba Medical Systems Corporation
    Inventors: Sadanori Tomiha, Koji Akita
  • Patent number: 10285653
    Abstract: In one embodiment, a magnetic resonance imaging apparatus configured to sequentially execute plural imaging sequences includes: processing circuitry configured to calculate a predicted value of Long MR Examination specific absorbed energy which is an accumulated SAR (Specific Absorption Ratio) value over the plural imaging sequences; and a display configured to display information on the predicted value with respect to a predetermined safety reference value of the Long MR Examination specific absorbed energy.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 14, 2019
    Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Kazuya Tanoue, Takao Kasugai, Shinya Ozawa
  • Patent number: 10281536
    Abstract: A system and method for magnetic resonance imaging (MRI) of a subject employs an elongate housing configured to be held and manipulated in a user's hand. The housing supports at least one permanent magnet and at least one RF coil. A device positioning subsystem measures position and orientation of the housing. An electronic subsystem interfaces to the at least one RF coil and to the device positioning subsystem. The electronic subsystem is configured to i) execute pulse sequences where each pulse sequence transmits at least one RF pulse into body tissue of the subject and acquires MRI signals from the body tissue of the subject, ii) acquire position data representing position and orientation of the housing during the pulse sequences from the device positioning subsystem, and iii) process the MRI signals of i) together with the position data of ii) to derive an image of the body tissue of the subject.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 7, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Yi-Qiao Song
  • Patent number: 10281543
    Abstract: In a magnetic resonance tomography scanner and an operating method therefor, a scanning volume is subdivided in a slice direction into multiple scanning slices, and the scan data of each of the scanning slices are acquired by a scan sequence allocated to the respective scanning slice. Each scan sequence has at least one preparation pulse allocated to the scanning slice, which causes nuclear spin excitation throughout the whole scanning volume. At least two scan sequences are implemented that differ with regard to a coil current fed during the preparation pulse to a field correction coil of the scanner for reducing a local inhomogeneity of a basic magnetic field, or that differ with regard to at least one pulse parameter of the preparation pulse. The respective coil current and/or pulse parameter is determined depending on the position of the scanning slice allocated to the respective scan sequence in the scanning volume.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: May 7, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Thorsten Feiweier, Dominik Paul
  • Patent number: 10279096
    Abstract: A system for omni-orientational wireless energy transfer is described. A transmitter unit has a transmitter resonator with a coil that is configured to be coupled to a power supply to wirelessly transmit power to a receiver unit. A receiver unit has a receiver resonator with a coil coupled to a device load. At least one of the resonators is a non-planar resonator that spans a non-degenerate two-dimensional surface having at least one concave portion.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: May 7, 2019
    Assignee: TC1 LLC
    Inventors: Joseph Stark, Edward Burke
  • Patent number: 10281534
    Abstract: A method and apparatus for transmitting and receiving RF signals suitable for MRI and/or MRS from MR “coils” (antennae) that are arranged in an array next to a tissue-sample-slice holder that constrains the front, back, and edges of the tissue sample and is configured to rotate in a “roll” direction (about an axis parallel to the main DC magnetic field) and optionally also rotate in a pitch direction (at varying angles up and down, left-to-right, or both, relative to the roll axis and thus to the main DC magnetic field); the system optionally includes temperature control (heat and/or cooling), an optical grid that is marked or etched into a cover glass that holds the sample (in some embodiments, the grid is visible in the MRI images as well), an electrical and/or optical stimulation means for delivering stimulation Some embodiments combine optical image data with MR image data.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: May 7, 2019
    Assignee: Life Services, LLC
    Inventors: Brandon J. Tramm, Scott M. Schillak, Matthew T. Waks, Charles A. Lemaire
  • Patent number: 10281538
    Abstract: A warm bore cylinder assembly having an outer wall, an inner wall, and a plurality of braces is provided. The outer wall is configured to define an inner exterior portion of a cryostat assembly. The outer wall is generally cylindrical, is made of a conductive material, and has an outer wall thickness. The inner wall is disposed radially inwardly of the outer wall. The inner wall is generally cylindrical, is made of a conductive material, and has an inner wall thickness. The braces extend along an axial direction defined by the outer wall and the inner wall. The plurality of braces are interposed between and join the outer wall and inner wall. The plurality of braces define openings disposed between adjacent braces.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: May 7, 2019
    Assignee: General Electric Company
    Inventors: Jean-Baptiste Mathieu, Evangelos Trifon Laskaris, Kenneth William Rohling, Minfeng Xu, Seung-Kyun Lee