Using A Nuclear Resonance Spectrometer System Patents (Class 324/307)
  • Patent number: 10809330
    Abstract: Described here are systems and methods for mitigating or otherwise removing the effects of short-term magnetic field instabilities caused by oscillations of the cold head in a cryogen-free magnet system used for magnetic resonance systems, such as magnetic resonance imaging (“MRI”) systems, nuclear magnetic resonance (“NMR”) systems, or the like.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: October 20, 2020
    Assignee: Synaptive Medical (Barbados) Inc.
    Inventors: Chad Tyler Harris, Geron Andre Bindseil, Alexander Gyles Panther, Jeff Alan Stainsby, Philip J. Beatty
  • Patent number: 10809332
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes sequence controlling circuitry. The sequence controlling circuitry applies a pre-pulse that inverts longitudinal magnetization from a positive value to a negative value and is configured, when a predetermined time period has elapsed, to acquire k-space data by performing three-dimensional acquisitions in which a radial acquisition is performed on a kx-ky plane and a Cartesian acquisition is performed in a kz direction.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 20, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Shuhei Bannae, Satoshi Sugiura
  • Patent number: 10810713
    Abstract: To provide an image processing device and an image processing method capable of controlling contrast of a diagnosed part without greatly changing the characteristic of the entire image, and improving the diagnosis efficiency, an image processing device 100 sets a search pixel range and a search region to search for a representative pixel value as reference upon emphasis on the contrast of a diagnostic image as image data of a diagnosis object, calculates the representative pixel value for emphasis processing based on the set search pixel value range and the search region, and generates an emphasized image where the contrast of the entire diagnostic image is emphasized with the representative pixel value as reference.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: October 20, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Hiroto Kokubun, Fuyuhiko Teramoto
  • Patent number: 10809327
    Abstract: A connecting lead for a receiving antenna of a magnetic resonance tomograph, to a system made up of a magnetic resonance tomograph and to a receiving antenna is provided. The connecting lead includes a resonant contactless power coupler. The receiving antenna is magnetically resonantly coupled by the connecting lead to the magnetic resonance tomograph. The magnetic resonance tomograph includes an alternating current generator that may be connected to the connecting lead and is configured to supply the active amplifier element of the receiving antenna with energy.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: October 20, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Stefan Popescu
  • Patent number: 10809328
    Abstract: Embodiments of the present disclosure include an inductor including at least one inductor coil, the at least one inductor coil including a plurality of outer longitudinal portions aligned around an outer periphery of the inductor, and a plurality of inner longitudinal portions aligned around an interior of the inductor. The plurality of outer longitudinal portions and the plurality of inner longitudinal portions collectively form two width-wise sides of the inductor and two length-wise sides of the inductor. The two width-wise sides and the two lengthwise sides define a substantially rectangular prism shape. The two width-wise sides and the two lengthwise sides define a hollow inductor core.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: October 20, 2020
    Assignee: General Electric Company
    Inventors: Ruxi Wang, Juan Antonio Sabate, Gary Dwayne Mandrusiak, Kevin Patrick Rooney, Karthik Kumar Bodla
  • Patent number: 10802095
    Abstract: A spectrum y includes a waveform-of-interest component and a baseline component which is a wide-band component. A weight array x is applied with respect to a base function array A to generate a baseline model Ax. An optimum baseline model Ax? is searched according to a first condition to fit a corresponding portion SIAx of the base line model Ax with respect to a representative portion yI of the baseline component and a second condition to reduce an Lp norm (wherein p?1) of the weight array x.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 13, 2020
    Assignee: Jeol Ltd.
    Inventor: Tomoki Nakao
  • Patent number: 10802096
    Abstract: A method for magnetic resonance imaging (MRI) may include obtaining a plurality of k-space datasets related to a scanning of a subject performed by an MRI scanner. The method may also include obtaining at least one filter for processing the plurality of k-space datasets, and applying the at least one filter to the plurality of k-space datasets convolutionally to obtain a plurality of processed k-space datasets. By applying the at least one filter, an application region extending through the plurality of k-space datasets may be determined within the plurality of k-space datasets, and a data point within the application region may be modified based at least on the other data points within the application region. The method may further include generating an image based on at least one of the processed k-space datasets.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: October 13, 2020
    Assignee: UIH AMERICA, INC.
    Inventors: Hui Liu, Yu Ding
  • Patent number: 10802098
    Abstract: An approach is presented to recontruct image data for an object using a partial set of magnetic resonance (MR) measurements. A subset of data points in a data space representing an object are selected (e.g. through random sampling) for MR data acquisition. Partial MR data corresponding to the subset of data points is received and used for image reconstruction. The overall speed of image reconstruction can be reduced dramatically by relying on acquisition of data for the subset of data points rather than for all data points in the data space representing the object. Compressive sensing type arguments are used to fill in missing measurements, using a priori knowledge of the structure of the data. A compressed data matrix can be recovered from measurements that form a tight frame. It can be established that these measurements satisfy the restricted isometry property (RIP). The zeroth-order regularization minimization problem can then be solved, for example, using a 2D ILT approach.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: October 13, 2020
    Assignees: The United States of America, as represented by the Secretary, Department of Health and Human Services, University of Maryland, College Park
    Inventors: Peter J. Basser, Ruiliang Bai, Alexander Cloninger, Wojciech Czaja
  • Patent number: 10802092
    Abstract: A device and a method for testing the MR-safety of an implant (4). The device includes a phantom (1) that has a test volume filled with a medium (2), wherein the test volume receives the implant (4) to be tested, at least one RF transmitter (3) that emits radio-frequency electromagnetic radiation into the test volume. The device is used for detecting the heating of the implant (4) and/or of the medium (2) surrounding the implant.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: October 13, 2020
    Assignee: MR COMP GmbH
    Inventor: Gregor Schaefers
  • Patent number: 10802091
    Abstract: The disclosure relates to a method for monitoring an absorption rate when using a primary coil of a magnetic resonance device and a secondary coil inductively coupled to the primary coil and to a monitoring unit, a magnetic resonance device and a computer program product. According to the method a maximum admissible absorption rate is provided, using which a maximum admissible B1 field strength of the secondary coil is determined. Furthermore, an actual B1 field strength of the secondary coil is determined. The absorption rate is monitored using the actual B1 field strength of the secondary coil and the maximum admissible B1 field strength of the secondary coil.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: October 13, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Wolfgang Bielmeier, Gerhard Brinker, Jürgen Nistler, Volker Schnetter
  • Patent number: 10791959
    Abstract: A magnetic resonance apparatus has a scanner that has a patient receiving area, a position data acquisition unit, and a patient examination table of a patient positioning device. The table is movable within the patient receiving area. The position data acquisition unit detects a subarea, including an isocenter, of the patient receiving area, and provides position data to a speed regulating processor that regulates the speed of the table of patient positioning device depending on this position data.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 6, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Peter Gall, Andreas Greiser, Dominik Paul, Steffen Schröter, Jens Thöne, Felix Wolf
  • Patent number: 10788553
    Abstract: A transmission signal generator generates a lock transmission signal that excites a lock nucleus (deuteron) used for observing a change of a static magnetic field. A LOCK transmission circuit transmits the lock transmission signal to an NMR probe. A LOCK reception circuit receives an NMR signal of the lock nucleus. A LOCK transmission sequencer, based on a pulse sequence generated according to at least one of amplitude modulation, frequency modulation, or phase modulation, controls generation of the lock transmission signal performed by the transmission signal generator.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: September 29, 2020
    Assignee: JEOL Ltd.
    Inventors: Hiroyasu Asano, Takeshi Tukada
  • Patent number: 10788556
    Abstract: A magnetic resonance imaging system (100) acquires magnetic resonance data (142) from a subject (118) within a measurement zone (108). Pulse sequence commands (140) control the magnetic resonance imaging system to acquire the magnetic resonance data according to a magnetic resonance fingerprinting protocol. The pulse sequence commands are configured for controlling the magnetic resonance imaging system to repeatedly generate an RF pulse train (300) and acquire the magnetic resonance data as multiple k-space traces. The machine executable instructions causes the processor to: sequentially acquire (200) the multiple k-space traces of magnetic resonance data by controlling the magnetic resonance imaging system with pulse sequence commands and calculate (202) the abundance of each of a set of predetermined substances for k-space traces that are acquired after a predetermined number of k-space traces of the multiple k-space traces has been acquired and the acquired magnetization has reached a steady state.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: September 29, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Thomas Erik Amthor, Peter Koken, Karsten Sommer, Mariya Ivanova Doneva, Peter Boernert
  • Patent number: 10782256
    Abstract: A method for detection and quantification of individual analytes in liquid analyte mixtures, by means of NMR spectrometry, in which method a sample of the analyte mixture has a high-frequency pulse applied to it in an NMR spectrometer, and the resulting NMR spectrum is evaluated, is to be developed further in such a manner that it allows a precise analysis of liquid analyte mixtures even when using low-field NMR spectrometers. For this purpose, the sample of the analyte mixture is placed into a low-field NMR spectrometer, and at least one high-frequency pulse that excites only one specific analyte is applied to it.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 22, 2020
    Assignee: Leibniz-Institut fuer Analytische Wissenschaften-ISAS-e.V.
    Inventors: Ahmad Telfah, Roland Hergenroeder, Joerg Lambert
  • Patent number: 10783218
    Abstract: The present disclosure is applied to a variable group calculation apparatus for calculating an undetermined variable group that simultaneously minimizes a difference value and a data value. The difference value is a difference between an added composite value, which is obtained by adding and combining the undetermined variable group and a dictionary data group, and an observation data group. The data value includes the difference value and a regularization term of the undetermined variable group. The variable group calculation apparatus of the present disclosure includes a convolution unit configured to convert the regularization term to a convolution value for an L1 norm using the undetermined variable group and a mollifier function, and a calculation unit configured to perform the calculation using the regularization term, which is converted to the convolution value by the convolution unit.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: September 22, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro Yoshizawa, Norimasa Kobori
  • Patent number: 10782373
    Abstract: A system and method for processing highly undersampled multi-echo spin-echo data by linearizing the slice-resolved extended phase graph model generates highly accurate T2 maps with indirect echo compensation. Principal components are used to linearize the signal model to estimate the T2 decay curves which can be fitted to the slice-resolved model for T2 estimation. In another example of image processing for highly undersampled data, a joint bi-exponential fitting process can compensate for image variations within a voxel and thus provide partial voxel compensation to produce more accurate T2 maps.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: September 22, 2020
    Assignee: The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Maria Altbach, Ali Bilgin, Chuan Huang, Christian Graff
  • Patent number: 10782375
    Abstract: In a volumetric fast spin-echo magnetic resonance imaging system a plurality of radio frequency pulses can be emitted. The plurality of radio frequency pulses can be directed toward a target sample. The plurality of radio frequency pulses can have a set of repetition times. The set of repetition times can define a frequency at which the plurality of radio frequency pulses are emitted. The set of repetition times can be varied during the emitting of the plurality of the radio frequency pulses. Magnetic resonance imaging data of a target sample can be received. A pseudo-random sampling pattern can be used to facilitate the receiving of the magnetic resonance imaging data having multiple magnetic resonance imaging contrasts for a single scan.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: September 22, 2020
    Assignee: The Regents of the University of California
    Inventors: Jonathan I. Tamir, Shimon Michael Lustig
  • Patent number: 10782380
    Abstract: In trigger-adapted MR data acquisition, a trigger from the object undergoing investigation is detected, by which a periodically repeated procedure of the object is detected. An imaging sequence is performed multiple times dependent on the trigger in order to acquire MR data. The imaging sequence includes at least one preparation pulse and a subsequent readout module, the readout module ending a first time period before an end of the procedure. The respective imaging sequence is performed only if RR?RR(0)?(dRR?dRR(B1)), wherein dRR(B1) is a second time period, RR corresponds is a first time interval between a trigger that is currently being detected and a trigger that was detected immediately before the currently detected trigger, and RR(0) is a second time interval that corresponds to a predefined time interval between two directly succeeding triggers.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: September 22, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Andreas Greiser, Dominik Paul, Thorsten Speckner
  • Patent number: 10775462
    Abstract: A system and method is provided that includes acquiring chemical exchange saturation transfer (CEST) data with the MRI system and generating an acquired Z-spectrum (Z) from the CEST data. The system and method also includes computing an estimated direct water saturation (Z?) based using at least one of relaxation measurements derived from the CEST data or imaging parameters used to acquire the CEST data with the MRI system, computing a direct saturation corrected Z-spectrum (?Z) using the acquired Z-spectrum (Z) and the estimated direct water saturation (Z?), and generating a CEST image of the subject using the direct saturation corrected Z-spectrum (?Z).
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: September 15, 2020
    Assignee: The General Hospital Corporation
    Inventors: Phillip Zhe Sun, Iris Yuwen Zhou
  • Patent number: 10775468
    Abstract: In a method and apparatus for parallel recording of a magnetic resonance dataset with a number of reception coils, wherein the measurement data acquired by each coil are a predetermined part of a complete set of k-space data, an excitation pulse applied, followed by a refocusing pulse. The resulting echo signal of an image dataset is acquired while a first read gradient activated. A gradient in the phase direction is designed to be activated in order to acquire additional echo signal while an additional readout gradient is activated. The gradient in the phase direction is designed so that the additional echo signal contains k-space data that supplements the predetermined part of the k-space data.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 15, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Mario Zeller
  • Patent number: 10775469
    Abstract: According to one embodiment, a magnetic resonance imaging apparatus includes processing circuitry. The processing circuitry estimates transmission inhomogeneity caused in a transmit RF magnetic field from a first image based on a first signal received by a whole-body coil, and estimates reception inhomogeneity caused in a receive RF magnetic field from the first image and a second image based on a second signal received by a surface coil. The processing circuitry generates a third image, having a resolution higher than a resolution of the first image and a resolution of the second image, based on a third signal received by the surface coil. The processing circuitry corrects the third image by using the estimated transmission inhomogeneity and reception inhomogeneity.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: September 15, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Tomoya Tsuruyama, Shuhei Nitta, Tomoyuki Takeguchi
  • Patent number: 10775463
    Abstract: A method for providing an estimated 3D T2 map for magnetic resonance imaging using a Double-Echo Steady-State (DESS) sequence for a volume of an object in a magnetic resonance imaging (MRI) system is provided. A DESS scan of the volume is provided by the MRI system. Signals S1 and S2 are acquired by the MRI system. Signals S1 and S2 are used to provide a T2 map for a plurality of slices of the volume, comprising determining repetition time (TR), echo time (TE), flip angle ?, and an estimate of the longitudinal relaxation time (T1), and wherein the DESS scan has a spoiler gradient with an amplitude G and a duration ? and ignoring echo pathways having spent more than two repetition times in the transverse plane.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: September 15, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Brian A. Hargreaves, Bragi Sveinsson
  • Patent number: 10775461
    Abstract: In a magnetic resonance slice multiplexing method and apparatus, measurements are repeated with additional phase amounts being applied, wherein in each repetition, the additionally applied phase amounts are changed such that at least a central k-space region is fully sampled in the course of the repeated acquisitions. A calibration dataset, which is used in reconstructing image data for the simultaneously excited slices from the acquired measurement data, is determined from the measurement data that have been fully acquired in the central k-space region. The calibration dataset is updated in further measurements.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: September 15, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Mario Zeller
  • Patent number: 10775465
    Abstract: Techniques are disclosed for determining coefficients for use in correcting a magnetic relaxation time constant, T, value obtained via magnetic resonance imaging when a pulse rate was at a first pulse rate value to a T value reflecting the T value that would have been obtained if the pulse rate was at a second pulse rate value. The technique includes, for each region of interest, pairing an obtained derivative, m, and an obtained offset, c, as an ordered pair (c, m). The technique further includes fitting the obtained plurality of ordered pairs (c, m) to a polynomial function, and determining the values of the coefficients from the polynomial function.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: September 15, 2020
    Assignees: Siemens Healthcare GmbH, King's College, London
    Inventors: Sebastien Roujol, Radhouene Neji, Li Huang
  • Patent number: 10778783
    Abstract: There is provided a service providing apparatus including a determination unit configured to determine a service to be provided for an information processing apparatus based on apparatus-related information acquired from the information processing apparatus, the apparatus-related information including spatial information and function information, the spatial information being related to a space in which a function of the information processing apparatus is extended and being acquired from an external object by the information processing apparatus, the function information indicating the function of the information processing apparatus, and a processing unit configured to execute a process for the service determined to be provided.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: September 15, 2020
    Assignee: SONY CORPORATION
    Inventors: Masahiro Oba, Shunsuke Suzuki, Takashi Matsuo
  • Patent number: 10768256
    Abstract: In a method for displaying quantitative magnetic resonance image data, and a processor, and a magnetic resonance (MR) apparatus that implement such a method, first quantitative MR image data of an examination object are provided to the processor, the first quantitative MR image having been obtained using an MR scanner with a first basic magnetic field strength. The first quantitative magnetic resonance image data are converted in the processor from the first basic magnetic field strength to a second basic magnetic field strength, thereby generating second quantitative MR image data, which are then displayed.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: September 8, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Berthold Kiefer, Lars Lauer, Heiko Meyer, Edgar Mueller, Elmar Rummert, David Grodzki
  • Patent number: 10768261
    Abstract: A method for magnetic resonance imaging suppresses off-resonance gradient-induced image artifacts due to metal. The method includes performing by a magnetic resonance imaging (MRI) apparatus two multi-spectral imaging (MSI) acquisitions within a field of view of the MRI apparatus, where the two MSI acquisitions have alternating-sign readout gradients. The two MSI acquisitions are then processed and combined by the MRI apparatus using a weighted image combination to produce a final image.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 8, 2020
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Xinwei Shi, Brian A. Hargreaves
  • Patent number: 10768253
    Abstract: In a magnetic resonance measurement sequence, an inversion pulse is applied that acts on a longitudinal magnetization of a first spin species and a second spin species, for example on a water portion and a fat portion. An excitation pulse is applied after a predetermined time period. At least one manipulation pulse is subsequently applied, respectively with associated gradient pulse.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: September 8, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Thorsten Feiweier
  • Patent number: 10768250
    Abstract: Techniques for crushing unwanted coherence pathways during magnetic resonance spectral (MRS) measurements include receiving first data that indicates a sequence of RF pulses with one or more target coherence pathways of spin states for a subject that has at least N?1 coupled spin states of interest. A negative, non-integer amplitude is determined for at least one intervening crusher pulse emitted from at least one spatial gradient magnetic coil. The at least one intervening crusher pulse has a duration less than a time between successive pulses of the sequence of RF pulses; and, the intervening crusher pulse de-phases unwanted coherence pathways. A MRS device is operated using the intervening crusher pulse and the sequence of RF pulses.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: September 8, 2020
    Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
    Inventors: Karl Landheer, Christoph Juchem
  • Patent number: 10758746
    Abstract: Disclosed are a radiotherapy assistant apparatus for modulating a build-up region of a photon beam for a radiotherapy, a radiotherapy system including the radiotherapy assistant apparatus, and method for the radiotherapy system. The radiotherapy assistant apparatus for modulating a build-up region of a photon beam for a radiotherapy, including at least: a magnetic field generator that generates a magnetic field that has a direction perpendicular to a movement direction of the photon beam, the magnetic field generator is disposed on a movement route along which the photon beam moves toward a target portion of the radiotherapy; and a magnetic field intensity adjuster that adjusts an intensity of the magnetic field generated by the magnetic field generator. The magnetic field generator disperses secondary electrons that have particular energy levels equal to or lower than a preset value.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: September 1, 2020
    Assignees: THE ASAN FOUNDATION, UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION
    Inventors: Jung Won Kwak, Sang Wook Lee, Byung Chul Cho, Seung Do Ahn, Won Sik Choi, Woo Sang Ahn, Chi Young Jeong, Seong Soo Shin, Kyoung Jun Yoon
  • Patent number: 10761159
    Abstract: A dual frequency coil package system for use in transmitting and receiving at least two frequencies in an MRI system, including a frequency converter coupled to the MRI system to receive a first frequency through the local transmit coil port and convert the first frequency to a second frequency, a second frequency transmit coil to receive the second frequency from the frequency converter and to transmit the second frequency, a dual tuned receiver coil to receive and to output the at least two frequencies, and a switchable receiver to receive the at least two frequencies output from the dual tuned receiver coil and to transmit the first frequency received from the dual tuned receiver coil directly to the MRI system, and to convert the second frequency received from the dual tuned receiver coil to the first frequency before transmission to the MRI system.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: September 1, 2020
    Assignee: ScanMed, LLC
    Inventor: Randall W. Jones
  • Patent number: 10761165
    Abstract: A system and method of acquiring an image at a magnetic resonance imaging (MRI) system is provided. Accordingly, an analog signal based on a pulse sequence and a first gain is obtained. The analog signal is converted into a digitized signal. A potential quantization error is detected in the digitized signal based on a boundary. When the detection is affirmative, a replacement analog signal based on the pulse sequence is received. At least one portion of the replacement analog signal can be based on an adjusted gain. The adjusted gain is a factor of the first gain. The replacement analog signal is digitized into a replacement digitized signal. At least one portion of the replacement digitized signal corresponding to the at least one portion of the replacement analog signal is adjusted based on a reversal of the factor.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: September 1, 2020
    Assignee: SYNAPTIVE MEDICAL (BARBADOS) INC.
    Inventors: Cameron Anthony Piron, Alexander Gyles Panther, Chad Tyler Harris, Stephen B. E. McFadyen
  • Patent number: 10761174
    Abstract: A method for recording a B0 map of a main magnetic field of a magnetic resonance device in an imaging volume of which an object to be recorded is arranged includes scanning a recording region to be covered by the B0 map by the magnetic resonance device. The recording region is scanned by a map recording sequence slice-by-slice in successive slices in a slice selection direction extending in a phase encoding direction and a readout direction, or three-dimensionally using two phase encoding directions and one readout direction in order to ascertain the B0 map. In a preliminary scan, the magnetic resonance device ascertains extension information describing the extension of the object using a scout sequence, which is used to define the recording region in sequence parameters of the map recording sequence and/or to adjust at least one sequence parameter of the map recording sequence.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: September 1, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Daniel Niederlöhner
  • Patent number: 10761169
    Abstract: In a method and apparatus for recording a magnetic resonance (MR) data set with MR signals from at least two slices, a first radio-frequency (RF) pulse is radiated in at least one first slice, a second RF pulse is radiated in at least one second slice, and readout of at least one first and at least one second MR signal takes place. The flip angle of the second RF pulse is smaller than the flip angle of the first RF pulse.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 1, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Mario Zeller
  • Patent number: 10761171
    Abstract: A system and method for generating quantitative images of a subject using a nuclear magnetic resonance system. The method includes performing a navigator module to acquire navigator data, and performing an acquisition module during free breathing of the subject to acquire NMR data from the subject that contains one or more resonant species that simultaneously produce individual NMR signals in response to the acquisition module. The above steps are repeated to acquire data from a plurality of partitions across the volume. The navigator data is analyzed to determine if the NMR data meets a predetermined condition and if not, the above steps are repeated for at least an affected partition corresponding to NMR data that did not meet the predetermined condition. The NMR data is compared to a dictionary of signal evolutions to determine quantitative values for two or more parameters of the resonant species in the volume.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: September 1, 2020
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Vikas Gulani, Nicole Seiberlich, Mark A. Griswold, Yong Chen, Bhairav B. Mehta, Simone Coppo
  • Patent number: 10753998
    Abstract: Resolution is enhanced for diffusion MR imaging. The tensors modeling the underlying water diffusion in brain tissues are used to interpolate other diffusion tensors, providing higher resolution diffusion biomarker images. Each diffusion tensor is represented by a pair of elements, the one in an ‘orientation space’ and another in a ‘shape space.’ The tensors are iteratively interpolated by averaging the aforementioned elements in separate mathematical spaces. The weighted average of the shape components of the diffusion tensors is computed in closed form, which decreases the runtime.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: August 25, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Hasan Ertan Cetingul
  • Patent number: 10756580
    Abstract: A wireless power transfer system (1) includes a primary coil (2) for generating an oscillating electromagnetic field for wirelessly transferring power to a secondary coil. The system also includes emitting coils (6) arranged to generate an electromagnetic field for exciting a nuclear quadrupole resonance in the biological material of an animal (7) exposed to the electromagnetic field generated by the emitting coils. The system also includes detecting coils (6) for detecting the absorption and/or emission of electromagnetic radiation by and/or from the excitation of the nuclear quadrupole resonance. The system is arranged, when the detecting coils detect the absorption or emission of electromagnetic radiation, to prevent the primary coil from generating, or to cause the primary coil to reduce the amplitude of, the oscillating electromagnetic field.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: August 25, 2020
    Assignee: Oxford University Innovation Limited
    Inventors: Arzhang Ardavan, James Semple
  • Patent number: 10746832
    Abstract: A method and apparatus for magnetic resonance (MR) diffusion tensor imaging (DTI) with minimizes artifacts caused by motion-induced changes of the diffusion encoding. An object (10) is subject to at least one shot of a multi-echo imaging sequence to generate a train of echo signals. The multi-echo imaging sequence includes diffusion gradients, acquiring the echo signals for different diffusion gradients, detecting motion of the object (10) during acquisition of the echo signals, determining a plurality of motional states of the object (10) based on the detected motion, wherein the object (10) is stationary in each detected motional state, determining directions of the diffusion gradients relative to a reference frame of the object (10) for detected motional states of the object (10), respectively, and deriving diffusion coefficients from the acquired echo signals for the determined relative directions of the diffusion gradients.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: August 18, 2020
    Assignee: Koninklijke Philips N.V.
    Inventors: Feng Huang, Zhigang Wu, Zhongbiao Wu
  • Patent number: 10746830
    Abstract: Methods and systems are provided for hybrid slice encoding. In one embodiment, a method for magnetic resonance imaging comprises, during a scan with a pulse sequence, sampling k-space linearly for a predetermined number of echoes, and sampling k-space centrically for remaining echoes of the pulse sequence. In this way, blurriness along the slice direction may be reduced for 3D fast spin echo imaging.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: August 18, 2020
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Gaohong Wu, Richard Scott Hinks, Robert Marc Lebel, Moran Wei
  • Patent number: 10748082
    Abstract: In some aspects, a quantum computing system includes a multi-dimensional array of qubit devices. Coupler devices reside at intervals between neighboring pairs of the qubit devices in the multi-dimensional array. Each coupler device is configured to produce an electromagnetic interaction between one of the neighboring pairs of qubit devices. In some cases, each qubit device has a respective qubit operating frequency that is independent of an offset electromagnetic field experienced by the qubit device, and the coupling strength of the electromagnetic interaction provided by each coupler device varies with an offset electromagnetic field experienced by the coupler device. In some cases, readout devices are each operably coupled to a single, respective qubit device to produce qubit readout signals that indicate the quantum state of the qubit device.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: August 18, 2020
    Assignee: Rigetti & Co, Inc.
    Inventors: Chad Tyler Rigetti, Dane Christoffer Thompson
  • Patent number: 10746827
    Abstract: A tissue imaging system (10) includes a stationary array of magnets (12) arranged to generate an inhomogeneous main magnetic field (B0), a tissue holder (16) adjacent the array of magnets (12) and operative to move tissue (14) placed therein about and/or along a coordinate axis, one or more RF receive coils (20) adjacent the tissue holder (16) and the magnets (12), and an MRI processor in communication with the magnets (12), the RF receive coils (20) and the tissue holder (16). An image of the tissue (14) is created by using spatial encoding of magnetic resonance signals generated by the magnets (12) and RF receive coils (20) for different spatial orientations of the tissue (14) moved by the tissue holder (16) with respect to the magnets. Spatial inhomogeneities in the main magnetic field spatially modulate a phase of each of the magnetic resonance signals.
    Type: Grant
    Filed: February 5, 2017
    Date of Patent: August 18, 2020
    Assignee: CLEAR-CUT MEDICAL LTD.
    Inventor: Moshe Shapiro
  • Patent number: 10746822
    Abstract: Systems and methods for quantitative susceptibility mapping (“QSM”) using magnetic resonance imaging (“MRf”) and a localized processing technique are described. A field-shift map is processed based on localized regions of local field perturbations. These localized field-shift regions are processed using established QSM algorithms, or using direct dipole inversion techniques, to compute regional susceptibility distributions from the localized field shift information. When the localized regions correspond to subvolumes of the field-shift map, local susceptibility maps can be generated and combined to form a composite quantitative susceptibility map. By computing regional susceptibility distributions based on localized field-shift information, residual streaking artifacts in the susceptibility map are constrained to the individual volumes from which they originate, thereby eliminating their propagation through the image.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: August 18, 2020
    Assignee: The Medical College of Wisconsin, Inc.
    Inventors: Kevin Koch, Casey Anderson
  • Patent number: 10739430
    Abstract: A method may include providing an initial flip angle schedule of refocusing radio frequency pulses, the refocusing radio frequency pulses being configured to generate an echo train; comparing the initial flip angle schedule with a first criterion, the first criterion relating to a first parameter relating to the echo train; determining, a first flip angle schedule based on the first comparison, the first flip angle schedule satisfying the first criterion; comparing the first flip angle schedule with a second criterion, the second criterion relating to a second parameter relating to the echo train; determining, a second flip angle schedule based on the second comparison, the second flip angle schedule satisfying the second criterion; and obtaining a magnetic resonance (MR) signal based on the second flip angle schedule.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 11, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Chaohong Wang, Guobin Li
  • Patent number: 10732242
    Abstract: An object positioned in an examination volume of a magnetic resonance (MR) device (1) is T2-weighted MR imaged such that the MR image is essentially free from interfering contributions from MR signals without T2 weighting. The object (10) is subject to a first T2 preparation sequence (T2PREP1) including an excitation RF pulse (21), one or more refocusing RF pulses (22), and a tip-up RF pulse (23). The object (10) is subject to a first readout sequence (RO1) including at least one excitation RF pulse and switched magnetic field gradients for acquiring a first set of MR signals. The object (10) is subject to a second T2 preparation sequence (T2PREP2) including an excitation RF pulse (21?), one or more refocusing RF pulses (22?), and a tip-up RF pulse (23?). At least one of the RF pulses (21?, 22?, 23?) of the second T2 preparation sequence (T2PREP2) has a different phase than the corresponding RF pulse (21, 22, 23) of the first T2 preparation sequence (T2PREP1).
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 4, 2020
    Assignee: Koninklijke Philips N.V.
    Inventor: Johannes Petrus Groen
  • Patent number: 10732243
    Abstract: In a method and magnetic resonance (MR) apparatus or optimizing a time progression of an MR control sequence that operates an MR scanner of the MR apparatus so as to execute at least two sequence modules, a property of a component of the magnetic resonance apparatus is detected, and a first requirement of the component is determined for a first sequence module of the at least two sequence modules. A second requirement of the component is detected for a second sequence module of the at least two sequence modules. The time progression of the at least two sequence modules is optimized, taking account of the property, the first requirement and second requirement.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: August 4, 2020
    Assignee: Siemens Healthcare GmbH
    Inventor: Thorsten Feiweier
  • Patent number: 10732247
    Abstract: In a method and apparatus for creating MR images of an examination volume, MR reference data of the examination volume are determined, and a local weighting matrix is determined using the MR reference data in order to extract MR data of the examination volume from MR signals measured in accelerated fashion with the local weighting matrix. Motion of the examination volume is determined while the MR signals measured in accelerated fashion from the examination volume are detected, whereby, if an adaptation of the reconstruction process is required when taking into consideration the determined motion, this proceeds by recalculation of the local weighting matrix taking into consideration the determined motion for correction of the determined motion, and application of the recalculated weighting matrix during the creation of the MR images which are calculated on the basis of the MR signals measured in accelerated fashion.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: August 4, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Thomas Beck, Mario Zeller
  • Patent number: 10729355
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a receiving unit and a determining unit. The receiving unit collectively receives settings of an imaging region on an image of a subject with respect to at least part of imaging protocols in a series of imaging protocols performed in an examination. The determining unit determines the propriety of the setting with respect to each imaging protocol included in the part of the imaging protocols before imaging is started using the part of the imaging protocols.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: August 4, 2020
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Kensuke Shinoda
  • Patent number: 10725095
    Abstract: A system for measuring a device under test (DUT) includes a computing device and a measurement device that measures an electrical or physical parameter of the DUT. The computing device receives and stores measurement data in a DUT record associated with the DUT. The computing device further obtains a first image of the DUT, displays the first image as a reference image with a first reference frame, receives a live image of the DUT from an image sensor, and displays the live image with a second reference frame that corresponds to the first reference frame. A cursor on the live image moves according to movement of the image sensor relative to the DUT. A second image of the DUT is obtained, wherein the second image is substantially aligned with the reference image based on an alignment of the cursor with the second reference frame. The second image is stored in the DUT record.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: July 28, 2020
    Assignee: Fluke Corporation
    Inventors: John Neeley, Jordan Schlichting, Thomas McManus, Peter Bergstrom, Lindsey Berdan, Joseph V. Ferrante, Michael Devin Stuart
  • Patent number: 10725124
    Abstract: A system for magnetic detection includes a nitrogen vacancy (NV) diamond material comprising a plurality of NV centers, a radio frequency (RF) excitation source configured to provide RF excitation to the NV diamond material, an optical excitation source configured to provide optical excitation to the NV diamond material, an optical detector configured to receive an optical signal emitted by the NV diamond material, and a controller. The optical signal is based on hyperfine states of the NV diamond material. The controller is configured to detect a gradient of the optical signal based on the hyperfine states emitted by the NV diamond material.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: July 28, 2020
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Brian P. Boesch, Gregory Scott Bruce, Jeff D. Cammerata, David Nelson Coar, Laird Nicholas Egan, Bryan Neal Fisk, Wilbur Lew, Arul Manickam, Stephen Michael Sekelsky, John B. Stetson, Jr., Peter G. Kaup, Julie Lynne Miller, Jon C. Russo, Emanuel Solomon Stockman, Thomas J. Meyer, James Michael Krause, James P. Mabry, Elton Pepa
  • Patent number: 10728469
    Abstract: Systems and methods are disclosed for generating hyperspectral images, which may correspond to a three dimensional image in which two dimensions correspond to a spatial field of view and a third dimension corresponds to a frequency domain absorption spectrum. Disclosed systems and methods include those employing dual optical frequency comb Fourier transform spectroscopy and computational imaging for generation of hyperspectral images. Such a combination advantageously allows for imaging systems to exhibit low size, weight, and power, enabling small or handheld sized imaging devices.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 28, 2020
    Assignee: DRS Network & Imaging Systems, LLC
    Inventors: Marco A. Lopez, Eden Y. C. Mei, Eric Anderson