Patents by Inventor Michael Kohler

Michael Kohler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11609289
    Abstract: In a method for providing setting parameter sets for at least one measuring protocol described by protocol parameters for acquiring magnetic resonance data with a magnetic resonance facility, setting parameter set is determined for each of at least two temperature status categories of the magnetic resonance facility using a temperature model describing a development of a temperature status of at least one component of the magnetic resonance facility. The method also includes preventing overheating of the at least one component due to the measurement with the measuring protocol being repeated a maximum number of times for a specified number of repetitions.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: March 21, 2023
    Assignee: Siemens Healthcare GmbH
    Inventors: Thorsten Feiweier, Michael Köhler
  • Patent number: 11531078
    Abstract: The disclosure relates to a method for generating a B0 map for a magnetic resonance examination of an examination subject, a magnetic resonance device, and a computer program product for executing the method. The method provides for the application of at least two preparatory RF pulses during a preparatory stage and at least one readout RF pulse during an acquisition stage. At least one stimulated echo signal is acquired after the readout RF pulse. A B0 map that shows the actual spatial distribution of the magnetic field strength of the main magnetic field is derived from the at least one acquired FID echo signal and the at least one acquired stimulated echo signal.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: December 20, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Michael Köhler
  • Patent number: 11357418
    Abstract: A control device establishes a change in a main magnetic field expected for a respective time instant and based on the established expected change in the main magnetic field, correctively adjusts the main magnetic field and/or a nominal receive frequency of the RF receive coil and/or a transmit frequency for subsequent RF transmit pulses and/or takes the expected change in the main magnetic field into account in the evaluation of the received MR signals. At least for some of the RF transmit pulses, the control device acquires, via a sensor device, a portion of the respective radiofrequency wave supplied to the RF transmit coil. The controller extracts therefrom an oscillation corresponding to a respiratory motion of the patient and based on the variation with time of the extracted oscillation, establishes the change in the main magnetic field expected for the respective time instant.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: June 14, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Petra Bildhauer, Flavio Carinci, Michael Köhler
  • Publication number: 20220179092
    Abstract: An adjustment device for adjusting a visual field of a Lidar measuring device in a focal plane array arrangement on a vehicle, with: a pitch angle estimating unit for determining a pitch angle (N) of the vehicle; an area unit for determining a desired object detection area in relation to an alignment of the vehicle based upon the pitch angle; a selection unit for determining a selection of rows (Z1-Z6) of transmitting elements of a Lidar transmitting unit of the Lidar measuring device and/or sensor elements of a Lidar receiving unit of the Lidar measuring device running parallel to a horizontal plane of the vehicle based upon the desired object detection area; and a control interface for activating the selection of rows of transmitting elements of the Lidar transmitting unit and/or sensor elements of the Lidar receiving unit of the Lidar measuring device, so as to detect objects within the object detection area.
    Type: Application
    Filed: December 31, 2021
    Publication date: June 9, 2022
    Inventors: Ralf Beuschel, Falko Diebel, Michael Köhler
  • Publication number: 20220179093
    Abstract: An adjustment device for adjusting a detection process of a Lidar measuring device in a focal plane array arrangement on a vehicle, with: an input interface for receiving a setting with information about at least two vertical acquisition zones; a setting unit for determining a control parameter of a detection process for each of the at least two acquisition zones (E1-E4) based upon the received setting; a selection unit for determining a partial quantity of rows running parallel to a longitudinal plane of the vehicle of transmitting elements of a Lidar transmitting unit of the Lidar measuring device and/or sensor elements of a Lidar receiving unit of the Lidar measuring device for each of the at least two acquisition zones based upon the received setting; and a control unit for controlling the Lidar measuring device, wherein the determined partial quantity of rows is controlled for each acquisition zone based upon the determined control parameter, so as to detect objects within the at least two acquisition zo
    Type: Application
    Filed: December 31, 2021
    Publication date: June 9, 2022
    Inventors: Ralf Beuschel, Falko Diebel, Michael Köhler
  • Patent number: 11354776
    Abstract: The disclosure relates to a method for correcting image data acquired by a magnetic resonance device, a magnetic resonance device, and a computer program product. According to the method, first navigator data, image data, and second navigator data are acquired. Moreover, temperature values of the magnetic resonance device are determined. The image data is corrected based on the first navigator data, the second navigator data, and the temperature values.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: June 7, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Michael Köhler, Dominik Paul, Mario Zeller
  • Publication number: 20220137189
    Abstract: An improved method for optical distance measurement is provided, in which only subsets of the transmitting elements of the transmission matrix are activated when using a transmission matrix to transmit measuring pulses and a reception matrix for receiving the latter.
    Type: Application
    Filed: January 18, 2022
    Publication date: May 5, 2022
    Inventors: Michael KIEHN, Michael KÖHLER
  • Publication number: 20220099771
    Abstract: In a method, an imaging sequence is irradiated into an examination region in which an examination object is located. The imaging sequence includes an acquisition section. The acquisition section includes acquiring a plurality of echo signals, each of which samples a k-space region of a k-space. The plurality of echo signals comprises a plurality of first echo signals and a plurality of second echo signals. The plurality of first echo signals and the plurality of second echo signals are generated from different magnetization configurations. The k-space regions sampled by the plurality of first echo signals sample the k-space in a different order to the k-space regions sampled by the plurality of second echo signals.
    Type: Application
    Filed: September 29, 2021
    Publication date: March 31, 2022
    Inventor: Michael Köhler
  • Publication number: 20220099766
    Abstract: A computer-implemented method for provision of a result dataset having position information of a local radio-frequency coil, including: providing input data having at least magnetic resonance data, which is acquired by means of the local radio-frequency coil; determining a result dataset by applying a trained function to the input data, wherein the result dataset comprises position information for determining the position of the local radio-frequency coil; and providing the result dataset.
    Type: Application
    Filed: September 30, 2021
    Publication date: March 31, 2022
    Applicant: Siemens Healthcare GmbH
    Inventors: Michael Köhler, Johann Sukkau, Michael Wullenweber
  • Publication number: 20220099767
    Abstract: The disclosure relates to a method for generating a B0 map for a magnetic resonance examination of an examination subject, a magnetic resonance device, and a computer program product for executing the method. The method provides for the application of at least two preparatory RF pulses during a preparatory stage and at least one readout RF pulse during an acquisition stage. At least one stimulated echo signal is acquired after the readout RF pulse. A B0 map that shows the actual spatial distribution of the magnetic field strength of the main magnetic field is derived from the at least one acquired FID echo signal and the at least one acquired stimulated echo signal.
    Type: Application
    Filed: September 17, 2021
    Publication date: March 31, 2022
    Inventor: Michael Köhler
  • Patent number: 11275143
    Abstract: Systems and methods for measuring eddy current fields occurring as a result of gradient pulses in a magnetic resonance sequence at a point in time during the magnetic resonance sequence in relation to at least one direction of pulse effect. At least the parts of the magnetic resonance sequence comprising the gradient pulses relating to the at least one direction of pulse effect are performed as a preparation sequence up until the point in time followed directly by a measurement sequence in which first measurement data is recorded. The preparation sequence is played out again with the same, directly consecutive measurement sequence without the gradient pulses relating to the at least one direction of pulse effect or with gradient pulses having an inverted sign relating to the at least one direction of pulse effect. Second measurement data is recorded.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: March 15, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: Michael Köhler
  • Patent number: 11262438
    Abstract: An improved method for optical distance measurement is provided, in which only subsets of the transmitting elements of the transmission matrix are activated when using a transmission matrix to transmit measuring pulses and a reception matrix for receiving the latter.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: March 1, 2022
    Assignee: IBEO AUTOMOTIVE SYSTEMS GmbH
    Inventors: Michael Kiehn, Michael Köhler
  • Publication number: 20210278492
    Abstract: The disclosure relates to a magnetic resonance tomography scanner and to a method for operating the magnetic resonance tomography scanner. The method includes determining a B0 field map. The method further includes determining an excitation of the nuclear spins to be achieved and a spectrally selective excitation pulse for transmission by a transmitter by way of an antenna as a function of the B0 field map. In the method, the excitation pulse is configured here to generate the excitation of the nuclear spins to be achieved in the patient. The excitation pulse is then output by way of the antenna.
    Type: Application
    Filed: February 5, 2021
    Publication date: September 9, 2021
    Inventors: David Grodzki, Michael Köhler, Dieter Ritter
  • Patent number: 11061777
    Abstract: A method and product for implementing application consistent snapshots of a sharded relational database across multiple storage arrays using a distributed and federated protection domains model across two or more storage clusters.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: July 13, 2021
    Assignee: Nutanix, Inc.
    Inventor: Jonathan Michael Kohler
  • Publication number: 20210165079
    Abstract: The invention relates to an assembly or a method for ascertaining the distance to at least one object. The light signals are converted into first electric signals by a first group of light-receiving elements, and the light signals are additionally converted into second electrical signals by a second group of light-receiving elements. The first electric signals are used to ascertain the distance by means of a time-correlated photon counting process depending on a starting time for the emission of the light signals. Furthermore, the second electric signals are used to determine the distance by means of an additional signal processing which differs from the time-correlated photon counting process. The second group has a lower degree of sensitivity for converting the photons into an electric current than the first group.
    Type: Application
    Filed: November 20, 2018
    Publication date: June 3, 2021
    Inventors: Ralf Beuschel, Michael Kiehn, Michael Köhler
  • Publication number: 20200400770
    Abstract: Systems and methods for measuring eddy current fields occurring as a result of gradient pulses in a magnetic resonance sequence at a point in time during the magnetic resonance sequence in relation to at least one direction of pulse effect. At least the parts of the magnetic resonance sequence comprising the gradient pulses relating to the at least one direction of pulse effect are performed as a preparation sequence up until the point in time followed directly by a measurement sequence in which first measurement data is recorded. The preparation sequence is played out again with the same, directly consecutive measurement sequence without the gradient pulses relating to the at least one direction of pulse effect or with gradient pulses having an inverted sign relating to the at least one direction of pulse effect. Second measurement data is recorded.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 24, 2020
    Inventor: Michael Köhler
  • Publication number: 20200388008
    Abstract: The disclosure relates to a method for correcting image data acquired by a magnetic resonance device, a magnetic resonance device, and a computer program product. According to the method, first navigator data, image data, and second navigator data are acquired. Moreover, temperature values of the magnetic resonance device are determined. The image data is corrected based on the first navigator data, the second navigator data, and the temperature values.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 10, 2020
    Inventors: Michael Köhler, Dominik Paul, Mario Zeller
  • Patent number: 10823809
    Abstract: A phase difference caused by eddy currents is determined for an MR system. First MR data is acquired with a first sequence by irradiating at least one RF pulse having an RF excitation pulse, importing a first test gradient during or after the RF excitation pulse, applying a read-out gradient, and acquiring the first MR data while the read-out gradient is switched, so the first MR data is acquired for at least one K-space line. Second MR data is acquired with a second sequence by importing a second test gradient during or after the RF excitation pulse, and applying the read-out gradient. The second MR data is acquired while the read-out gradient is switched, so the second MR data is acquired for the at least one K-space line. The phase difference per voxel is determined using the first MR data and the second MR data.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: November 3, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Michael Köhler, Gudrun Ruyters
  • Publication number: 20200150161
    Abstract: Systems and methods are provided for determining a use of a system component in an imaging system. The imaging system includes a primary side configured to provide power to the system component and a secondary side including the system component that uses the power provided by the primary side during the image sequence. The method includes determining the use of the system component during an imaging sequence, determining a time averaged power provided by the primary side during the imaging sequence, determining a maximum time averaged power that may be provided by the primary side until a temperature limit is reached on the primary side. Further, whether the time averaged power is smaller than the maximum time averaged power is determined.
    Type: Application
    Filed: November 5, 2019
    Publication date: May 14, 2020
    Inventors: Thorsten Feiweier, Michael Köhler, Helmut Lenz, Sören Grübel
  • Patent number: 10643657
    Abstract: A signal acquisition of a signal based on specific trigger events is provided. In particular, a separate segment of an input signal is stored for each trigger event. Thus, each trigger event generates separate data comprising data relating to a specific period of time in association with a corresponding trigger event.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: May 5, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventor: Michael Köhler