Patents Examined by G. M. A Hyder
  • Patent number: 11448716
    Abstract: The invention relates to a method for optimizing an MR imaging sequence with a plurality of sequence blocks where gradient requirements of logical gradients switched along axes including a read, slice, and phase axis are determined. Based on the requirements, a reference gradient is determined among the logical gradients having a longest minimum duration relative to remaining logical gradients within the sequence block during which the reference gradient is switched on. A scaling factor is determined for each of the logical gradients. The scaling factors for the logical gradient factors are updated taking into account the determined stretch ratios, and optimized amplitudes are determined for the logical gradients based on the updated scaling factors.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: September 20, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Waqas Majeed, David Grodzki, Florian Maier, Himanshu Bhat
  • Patent number: 11435684
    Abstract: The power supply apparatus including a high-voltage generation unit generating a DC voltage VA includes a Zener diode that drops the DC voltage VA to a DC voltage VB, a resistor connected to a line to which the DC voltage VA is output, and a voltage divider that generates a DC voltage VC by dividing the DC voltage VA with the resistor, and the voltage divider adjusts the DC voltage VC such that the potential difference between the DC voltage VB and the DC voltage VC is within a predetermined range.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: September 6, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yusuke Saito
  • Patent number: 11426094
    Abstract: Methods for reconstructing images of a subject from data acquired with a medical imaging system, such as a magnetic resonance imaging (“MRI”) system, are described. In general, the image reconstructions implement a primal-dual optimization strategy that, in each iteration, stochastically updates a dual variable.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: August 30, 2022
    Assignee: Mayo Foundation for Medical Education and Research
    Inventor: Joshua D. Trzasko
  • Patent number: 11422213
    Abstract: An apparatus for providing a B0 magnetic field for a magnetic resonance imaging system. The apparatus includes at least one permanent B0 magnet to contribute a magnetic field to the B0 magnetic field for the MRI system and a ferromagnetic frame configured to capture and direct at least some of the magnetic field generated by the B0 magnet. The ferromagnetic frame includes a first post having a first end and a second end, a first multi-pronged member coupled to the first end, and a second multi-pronged member coupled to the second end, wherein the first and second multi-pronged members support the at least one permanent B0 magnet.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: August 23, 2022
    Assignee: Hyperfine Operations, Inc.
    Inventors: Cedric Hugon, Hadrien A. Dyvorne, Michael Stephen Poole
  • Patent number: 11422215
    Abstract: The disclosure relates to a gradient coil unit comprising at least one first conductor structure, which is configured to generate a magnetic field gradient in a first direction, and an eddy current compensating conductor structure, which is configured to compensate for a first magnetic field. The first magnetic field is generated by a current induced in the first conductor structure as a result of activation of a conductor structure comprised by the gradient coil unit.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: August 23, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Peter Dietz
  • Patent number: 11424060
    Abstract: A superconducting coil of an embodiment includes a winding frame; a superconducting wire wound around the winding frame, the superconducting wire including a first region and a second region facing the first region; and a first layer placed between the first region and the second region, the first layer including a first particle and a thermosetting resin, the first particle including crystal having volume resistivity equal to or higher than 10?2 ?·m and having cleavage, and the thermosetting resin surrounding the first particle.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: August 23, 2022
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mariko Hayashi, Takashi Kuboki
  • Patent number: 11409088
    Abstract: In order to provide an optical system to be installed in a projection system which is capable of allowing a patient to view a clear image in a diagnostic imaging apparatus, the optical system according to the present invention includes a Fresnel lens having a base material and a plurality of annular sections arranged around a center axis on a reference surface of the base material, and a deflection element configured to deflect light from the Fresnel lens. In a cross section including the center axis, an inclination angle of the annular sections to the reference surface changes asymmetrically between from a middle point of one and other ends of the Fresnel lens to the one end and from the middle point to the other end.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: August 9, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Seiji Nakahara
  • Patent number: 11399733
    Abstract: A pediatric magnetic resonance (MRI) system and sub-system are provided. The pediatric MRI system includes a magnet-gradient assembly, an RF shield-body coil assembly and a pediatric MRI sub-system. The pediatric MRI sub-system includes an infant warmer or isolette having a patient section for accommodating a patient. The infant warmer is positionable relative to the magnet-gradient-body coil assembly of the pediatric MRI system. The pediatric MRI sub-system also includes a warming mattress arranged within the patient section of the infant warmer. The infant warming mattress includes an interior space filled at least partially with a host medium and a conduction heating system at least partially arranged in the interior space to conduct heat to the interior space of the infant warming mattress. The pediatric MRI system also includes at least one local radio frequency (RF) coil that is positionable within the patient section of the infant warmer.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 2, 2022
    Assignee: Advanced Imaging Research, Inc.
    Inventor: Ravi Srinivasan
  • Patent number: 11404191
    Abstract: A superconducting magnet arrangement comprises a field coil assembly with coil windings that when in operation are electrically superconducting. The field coil assembly is circuited between connection ports for a voltage supply. A switching module switches a sub-section of the field coil assembly's coil windings between its electrical superconducting and electrical resistive states, said sub-section forming a switching coil circuited between the connection ports. In the operational state where both the switching coil and the field coil(s) are superconducting and carry a permanent electrical current, the field coil(s) and the switching coil together generate a stationary magnetic field. According to the invention the switch windings give a significant contribution to the magnetic field. The field coil assembly's coil windings that may be switched between it electrically superconducting and resistive states form the switching coil.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: August 2, 2022
    Assignee: Koninklijke Philips N.V.
    Inventor: Johannes Adrianus Overweg
  • Patent number: 11402763
    Abstract: A developing cartridge 1 may include a developing roller including a developing roller shaft, a casing capable of containing a developer material, and a developing electrode or a member configure to be electrically connected to the developing roller shaft. The developing electrode or the member has a first end portion configured to be electrically connected to the developing roller shaft and a second end portion located farther away from the developing roller shaft than the first end portion. The second end portion is farther away in the second direction from the one end of the casing than the first end portion is from the one end of the casing. The developing electrode has a first hole extending in the second direction between the first end portion and the second end portion.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: August 2, 2022
    Assignee: BROTHER KOGYO KABUSHIKI KAISHA
    Inventor: Nao Itabashi
  • Patent number: 11391800
    Abstract: A shim device having an HTS shim conductor track (C) and a shim switch (Sw1) The track (C) is curved around an axis (z) and the shim switch is arranged in a first conductor track portion (S1), to interrupt its superconducting state. The track (C) extends around at least a first opening (O1) and a second opening (O2) such that the track (C) has a first circumferential current path (L1), a second circumferential current path (L2) and a third circumferential current path (L3). Two of the three paths (L1, L2, L3) each surround only one of the two openings and one of the three paths (L1, L2, L3) surrounds both openings. The first portion (S1) is part of only the first path (L1) and the second path (L2). This produces a persistent HTS shim for field homogenization, allowing both a complex field distribution and a large degree of design freedom.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: July 19, 2022
    Assignee: BRUKER SWITZERLAND AG
    Inventors: Kenneth J. Guenter, Robert Schauwecker
  • Patent number: 11391684
    Abstract: The present disclosure relates to a method for measuring aromatic contents in a hydrocarbon solution. More specifically, it relates to a measurement method capable of quickly and accurately checking aromatic contents in a compound, particularly in a hydrocarbon, in a solution state without a high-temperature drying process.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 19, 2022
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Yong Hee Lee, Wan Jae Myeong, Woo Jin Park, Bong Sik Jeon, Eui Geun Jung
  • Patent number: 11393615
    Abstract: A method for charging an HTS shim device in a cryostat having a room temperature bore using a charging device. A shim switch temporarily interrupts the superconducting state in a section of an HTS shim conductor path. The charging device includes a primary circuit with a normal-conducting charging coil and the conductor path forms a secondary circuit. A current change in the secondary circuit results from a change in magnetic flux generated by the charging coil through the secondary circuit. In a first phase the shim switch is opened to interrupt the superconducting state in a section of the conductor path, the charging coil is positioned in the bore, and the current in the primary circuit is changed; in a second phase, the conductor path is superconductingly closed; in a third phase, the current in the primary circuit is changed and/or the charging coil is removed from the bore.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: July 19, 2022
    Assignee: BRUKER SWITZERLAND AG
    Inventors: Kenneth J. Guenter, Robert Schauwecker
  • Patent number: 11385308
    Abstract: The present disclosure relates to a magnetic resonance (MR) scanner and magnetic resonance imaging (MRI) system. The MR scanner includes a superconducting magnet, a superconducting quantum processor, a first cooling system surrounding the superconducting magnet, and a second cooling system surrounding the superconducting quantum processor. The second cooling system is embedded in the first cooling system.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 12, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Stefan Popescu
  • Patent number: 11381406
    Abstract: A physical unclonable function is disclosed. A highly random distribution of magnetic particles within a thermoplastic polymer is created by magnetizing magnetizable particles in solid pellet feed material before feeding the solid pellets into an injection molding machine. Other devices and processes are disclosed.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: July 5, 2022
    Assignee: Lexmark International, Inc.
    Inventors: Gary Allen Denton, James Paul Drummond, Kelly Ann Killeen
  • Patent number: 11378630
    Abstract: Methods and apparatus for reducing noise in RF signal chain circuitry for a low-field magnetic resonance imaging system are provided. A switching circuit in the RF signal chain circuitry may include at least one field effect transistor (FET) configured to operate as an RF switch at an operating frequency of less than 10 MHz. A decoupling circuit may include tuning circuitry coupled across inputs of an amplifier and active feedback circuitry coupled between an output of the amplifier and an input of the amplifier, wherein the active feedback circuitry includes a feedback capacitor configured to reduce a quality factor of an RF coil coupled to the amplifier.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: July 5, 2022
    Assignee: Hyperfine Operations, Inc.
    Inventors: Hadrien A. Dyvorne, Todd Rearick
  • Patent number: 11372071
    Abstract: A method may include obtaining a plurality of groups of imaging data. Each group of the plurality of groups of imaging data may be generated based on MR signals acquired by an MR scanner via scanning a subject using a diffusion sequence. The method may also include determining one or more correction coefficients associated with an error caused by the diffusion sequence for each group of the plurality of groups of imaging data. The method may also include determining, based on the one or more correction coefficients corresponding to the each group of the plurality of groups of imaging data, a plurality of groups of corrected imaging data. The method may further include determining averaged imaging data by averaging the plurality of groups of corrected imaging data in a complex domain and generating, based on the averaged imaging data, an MR image.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: June 28, 2022
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Guobin Li, Nan Liu, Zhaopeng Li
  • Patent number: 11372062
    Abstract: According to one embodiment, a coil element includes an extendable and contractible coil and a capacitor. The capacitor is connected to the coil and has an electrostatic capacity which changes due to a physical change in response to extension or contraction of the coil.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: June 28, 2022
    Assignee: Canon Medical Systems Corporation
    Inventors: Sadanori Tomiha, Takafumi Ohishi, Sho Kawajiri, Satoshi Imai
  • Patent number: 11369453
    Abstract: Apparatus for imaging during surgical procedures includes an operating room for the surgical procedure and an MRI for obtaining images periodically through the surgical procedure by moving the magnet up to the table. The magnet wire is formed of a superconducting material such as magnesium di-boride or Niobium-Titanium which is cooled by a vacuum cryocooling system to superconductivity without use of liquid helium. The magnet weighs less than 1 to 2 tonne and has a floor area in the range 15 to 35 sq feet so that it can be carried on the floor by a support system having an air cushion covering the base area of the magnet having side skirts so as to spread the weight over the entire base area. The magnet remains in the room during surgery and is powered off to turn off the magnetic field when in the second position remote from the table.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: June 28, 2022
    Assignee: Sino Canada Health Engineering Research Institute (Hefei) Ltd.
    Inventors: Gong Zhang, John Saunders, Gordon A. Klimenko, Darrell Van Mol
  • Patent number: 11372031
    Abstract: A high voltage power supply apparatus includes: a comparator, a transformer, a rectifier, and a detector. The comparator is to control output of a basic voltage. A high voltage based on the basic voltage is used to perform an image forming job in an image forming apparatus. The transformer is to output an alternating current voltage of a second side of the transformer by amplifying an alternating current voltage of a first side of the transformer, the amplifying being based on a resonance phenomenon induced from the basic voltage. The rectifier is to output the high voltage by rectifying the alternating current voltage of the second side. The detector is to sense a voltage applied to the comparator and a voltage applied to the transformer, and is to output operational state information of the high voltage power supply apparatus based on the sensed voltages.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: June 28, 2022
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Kwanghoon Cheon, Jinyun Park, Jonghwa Cho