Patents by Inventor Stefan Roll

Stefan Roll 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: 11714149
    Abstract: A method for generating an MRI sequence (1) which is characterized in that a first time segment type and a second time segment type differing therefrom are predefined and the MRI sequence (1) is constructed by time segments (5, 6) of the first time segment type and time segments (5, 6) of the second time segment type being strung together alternately.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: August 1, 2023
    Assignee: Neoscan Solutions GmbH
    Inventors: Stefan Röll, Christoph Dinh
  • Patent number: 11573278
    Abstract: An MR measuring assembly (3) with an MR device (2) is provided, which has a main magnet (4) generating a stray magnetic field and a platform (1), having a side border (5), on which the MR device (2) is placed. The border (5) marks an iso-contour surface of the stray field at a specified magnetic field strength. The platform (1) therefore forms a natural barrier that prevents people or objects being exposed to magnetic field strengths that are too high. To this end provision is additionally made, in accordance with the invention, for a step (15) for the marking of an iso-contour surface of a stray magnetic field of an MR device (2) at a specified magnetic field to be used.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 7, 2023
    Assignee: Neoscan Solutions GmbH
    Inventors: Stefan Roll, Robert Odenbach
  • Publication number: 20220171005
    Abstract: A method for generating an MRI sequence (1) which is characterized in that a first time segment type and a second time segment type differing therefrom are predefined and the MRI sequence (1) is constructed by time segments (5, 6) of the first time segment type and time segments (5, 6) of the second time segment type being strung together alternately.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Applicant: Neoscan Solutions GmbH
    Inventors: Stefan RÖLL, Christoph DINH
  • Publication number: 20210199734
    Abstract: An MR measuring assembly (3) with an MR device (2) is provided, which has a main magnet (4) generating a stray magnetic field and a platform (1), having a side border (5), on which the MR device (2) is placed. The border (5) marks an iso-contour surface of the stray field at a specified magnetic field strength. The platform (1) therefore forms a natural barrier that prevents people or objects being exposed to magnetic field strengths that are too high. To this end provision is additionally made, in accordance with the invention, for a step (15) for the marking of an iso-contour surface of a stray magnetic field of an MR device (2) at a specified magnetic field to be used.
    Type: Application
    Filed: November 25, 2020
    Publication date: July 1, 2021
    Applicant: Neoscan Solutions GmbH
    Inventors: Stefan ROLL, Robert ODENBACH
  • Patent number: 10444306
    Abstract: A magnetic resonance facility is provided. The magnetic resonance facility includes at least one object table configured to mount an object to be examined and at least one coil facility embodied separately from the object table, which includes at least one local coil and at least one connecting portion, which may be introduced into at least one recess of the object table and may be held there to hold the coil facility. The connecting portion in the recess is guided displaceably along a longitudinal direction of the recess between different positions in which it may be held. At least one coil-facility-side connecting device is arranged on the connecting portion and may establish an electrical connection for the power supply and/or for signal transmission between the coil facility and the object table and/or at least one optical connection for signal transmission between the coil facility and the object table.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: October 15, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Katharina Hesels, Stefan Röll
  • Publication number: 20170299669
    Abstract: A magnetic resonance facility is provided. The magnetic resonance facility includes at least one object table configured to mount an object to be examined and at least one coil facility embodied separately from the object table, which includes at least one local coil and at least one connecting portion, which may be introduced into at least one recess of the object table and may be held there to hold the coil facility. The connecting portion in the recess is guided displaceably along a longitudinal direction of the recess between different positions in which it may be held. At least one coil-facility-side connecting device is arranged on the connecting portion and may establish an electrical connection for the power supply and/or for signal transmission between the coil facility and the object table and/or at least one optical connection for signal transmission between the coil facility and the object table.
    Type: Application
    Filed: April 12, 2017
    Publication date: October 19, 2017
    Inventors: Katharina Hesels, Stefan Röll
  • Patent number: 8686728
    Abstract: A system generates a Radio Frequency (RF) magnetic field in an MR imaging unit using an RF transmitting coil for generating a Radio Frequency (RF) magnetic field and multiple RF receiver coils for receiving RF signals for Magnetic Resonance (MR) image data acquisition. An RF transmission coil generates an RF magnetic field. An RF receiver coil receives an RF signal for MR image data acquisition and couples a magnetic field from the RF receiver coil to the RF transmission coil for adaptively altering the RF magnetic field generated by the RF transmission coil to reduce inhomogeneity in the RF magnetic field generated by the RF transmission coil in response to applying an RF pulse to the RF transmission coil. An adjustment processor adjusts characteristics of the RF receiver coil to alter the RF magnetic field generated by the RF transmission coil.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: April 1, 2014
    Assignee: Siemens Medical Solutions USA, Inc.
    Inventors: Bernd Stoeckel, Stefan Röll
  • Publication number: 20130021033
    Abstract: A system generates a Radio Frequency (RF) magnetic field in an MR imaging unit using an RF transmitting coil for generating a Radio Frequency (RF) magnetic field and multiple RF receiver coils for receiving RF signals for Magnetic Resonance (MR) image data acquisition. An RF transmission coil generates an RF magnetic field. An RF receiver coil receives an RF signal for MR image data acquisition and couples a magnetic field from the RF receiver coil to the RF transmission coil for adaptively altering the RF magnetic field generated by the RF transmission coil to reduce inhomogeneity in the RF magnetic field generated by the RF transmission coil in response to applying an RF pulse to the RF transmission coil. An adjustment processor adjusts characteristics of the RF receiver coil to alter the RF magnetic field generated by the RF transmission coil.
    Type: Application
    Filed: July 21, 2011
    Publication date: January 24, 2013
    Applicant: SIEMENS MEDICAL SOLUTIONS USA, INC.
    Inventors: Bernd Stoeckel, Stefan Röll
  • Publication number: 20090027052
    Abstract: A PET examination which acquires a data record of the body of a patient is carried out during at least one embodiment of a method for acquiring measured data. On the basis of the measured values of the data record, at least one region of interest in the body of the patient is determined, in which at least one examination of at least one embodiment of a method is carried out.
    Type: Application
    Filed: June 17, 2008
    Publication date: January 29, 2009
    Inventors: Jurgen Kampmeier, Gunther Platsch, Martin Requardt, Stefan Roll, Sebastian Schmidt, Kristin Schmiedehausen, Michael Szimtenings
  • Patent number: 7382126
    Abstract: In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a strongly-sensitive atomic nucleus type (A) with involvement of an MR-active, weakly-sensitive atomic nucleus type (X), all RF pulses are radiated sequentially, i.e. with defined time interval relative to one another, such that at no point in time of the sequence are different RF pulses radiated simultaneously or overlapping, and the sequence of the RF pulses causes a polarization transfer of the two involved atomic nucleus types (A), (X).
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: June 3, 2008
    Assignee: Siemens Aktiengesellschaft
    Inventors: Uwe Böttcher, Stefan Röll
  • Patent number: 7215119
    Abstract: In a method for dynamic frequency detection of the resonance frequency in magnetic resonance spectroscopy, by measuring navigator signals at the same point in time in each of a number of successive sequence passes, and by comparing the navigator signals, a frequency shift of the resonance frequency is determined on the basis of which the respective individual spectrum obtained from each sequence repetition is corrected with respect to the measured frequency shift.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: May 8, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Gunnar Krüger, Stefan Röll
  • Publication number: 20070052416
    Abstract: In a method and apparatus for detection improvement of a weakly-sensitive atomic nucleus type in MR spectroscopy data acquisition using polarization transfer for a weakly-sensitive atomic nucleus type (A) with involvement of an MR-active, strongly-sensitive atomic nucleus type (X), all RF pulses are radiated sequentially, i.e. with defined time interval relative to one another, such that at no point in time of the sequence are different RF pulses radiated simultaneously or overlapping, and the sequence of the RF pulses causes a polarization transfer of the two involved atomic nucleus types (A), (X).
    Type: Application
    Filed: August 25, 2006
    Publication date: March 8, 2007
    Inventors: Uwe Bottcher, Stefan Roll
  • Publication number: 20050248343
    Abstract: In a method for dynamic frequency detection of the resonance frequency in magnetic resonance spectroscopy, by measuring navigator signals at the same point in time in each of a number of successive sequence passes, and by comparing the navigator signals, a frequency shift of the resonance frequency is determined on the basis of which the respective individual spectrum obtained from each sequence repetition is corrected with respect to the measured frequency shift.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 10, 2005
    Inventors: Gunnar Kruger, Stefan Roll
  • Patent number: 6919721
    Abstract: In a hybrid CSI procedure for a magnetic resonance device, for a predeterminable volume of interest of the hybrid CSI procedure, the magnetic resonance device automatically defines an increased volume that exceeds the volume of interest such that all magnetic resonance signal-emitting substances of interest contained in the volume of interest are excited in order to create the magnetic resonance signals to be evaluated spectroscopically, and a saturation volume directly adjoining the volume of interest is automatically defined and saturated before the excitation by the magnetic resonance device such that no unwanted magnetic resonance signals are created from outside the volume of interest.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: July 19, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Uwe Böttcher, Jan Ruff, Stefan Röll
  • Publication number: 20040257077
    Abstract: In a hybrid CSI procedure for a magnetic resonance device, for a predeterminable volume of interest of the hybrid CSI procedure, the magnetic resonance device automatically defines an increased volume that exceeds the volume of interest such that all magnetic resonance signal-emitting substances of interest contained in the volume of interest are excited in order to create the magnetic resonance signals to be evaluated spectroscopically, and a saturation volume directly adjoining the volume of interest is automatically defined and saturated before the excitation by the magnetic resonance device such that no unwanted magnetic resonance signals are created from outside the volume of interest.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 23, 2004
    Inventors: Uwe Bottcher, Jan Ruff, Stefan Roll