Patents by Inventor Peter Speier

Peter Speier 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).

  • Publication number: 20170242086
    Abstract: A method for generating at least one acquisition template for an acquisition of magnetic resonance signals, an acquisition template generating unit, a magnetic resonance apparatus and a computer program product. At least one acquisition template is generated with an acquisition template generating unit. The at least one acquisition template has a plurality of spiral-like spokes in a k-space, each spoke having a plurality of spiral points.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 24, 2017
    Inventors: Jens Wetzl, Christoph Forman, Peter Speier
  • Publication number: 20170227618
    Abstract: In a method and apparatus for acquiring magnetic resonance (MR) data from a predetermined volume within an examination object, a control protocol for a gradient echo sequence is selected that specifies that gradient moments produced in said gradient echo sequence be balanced along all three spatial directions. In this gradient echo sequence a slice selection gradient is activated in a slice selection direction that produces a balanced gradient moment, with simultaneous radiation of an RF pulse that simultaneously excites nuclear spins in multiple slices of the examination object, with said excitation being repeated according to a repetition time. A phase of MR signals to be acquired from a same one of said multiple layers is varied from repetition time-to-repetition time.
    Type: Application
    Filed: December 2, 2016
    Publication date: August 10, 2017
    Applicant: Siemens Healthcare GmbH
    Inventors: Peter Speier, Daniel Staeb
  • Patent number: 9684982
    Abstract: A computer-implemented method for performing isotropic reconstruction of Magnetic Resonance Imaging (MRI) data includes receiving a stack of slices acquired by an MRI device in two or more directions and reslicing the stack of slices into (i) an acquired view stack comprising high-resolution slices acquired in-plane, and (ii) a reslice stack comprising degraded slices acquired out of plane. An estimated slice profile is generated based on the stack of slices and the acquired view stack is convolved with the estimated slice profile to yield a simulated distorted slice stack. The simulated distorted slice stack is subtracted from the acquired view stack to yield a high-frequency band estimate and the high-frequency band estimate is combined with the reslice stack to yield isotropic reconstruction results.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 20, 2017
    Assignee: Siemens Healthcare GmbH
    Inventors: Ti-chiun Chang, Xiaoguang Lu, Peter Speier
  • Patent number: 9684979
    Abstract: A method of magnetic resonance (MR) imaging of a volume undergoing repetitive motion includes obtaining source slice data indicative of a plurality of source slices during the repetitive motion, and obtaining anchor slice data indicative of an anchor slice during the repetitive motion. The anchor slice intersects the plurality of source slices. The source slice data and the anchor slice data are reconstructed. A three-dimensional image assembly procedure is implemented to generate, for each phase of the repetitive motion, volume data based on a respective subset of the reconstructed source slice data. For each phase of the repetitive motion, the respective subset of slices is selected based on a correlation of the source slice data and the anchor slice data along an intersection between each source slice and the anchor slice. The source slice data of the selected subset is corrected for misalignment with the anchor slice data.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: June 20, 2017
    Assignee: Siemens Healthcare GmbH
    Inventors: Xiaoguang Lu, Peter Speier, Hasan Ertan Cetingul, Marie-Pierre Jolly, Michaela Schmidt, Christoph Guetter, Carmel Hayes, Arne Littmann, Hui Xue, Mariappan S. Nadar, Frank Sauer, Edgar Müller
  • Publication number: 20170160367
    Abstract: A transmitter for pilot tone navigation in a magnetic resonance tomography system includes a power supply and an antenna. The transmitter is configured to transmit a pilot tone signal via the antenna. The transmitter also includes a decoupling element in order to protect a transmitter output from signals that the antenna receives with excitation pulses of the magnetic resonance tomography system during a magnetic resonance tomography. In a method, movement-dependent changes to the pilot tone signal of the transmitter are identified by a controller of the magnetic resonance tomography system.
    Type: Application
    Filed: December 3, 2016
    Publication date: June 8, 2017
    Inventors: Steffen Schröter, Jan Bollenbeck, Matthias Fenchel, Peter Speier, Markus Vester
  • Publication number: 20170160364
    Abstract: A method is provided for ascertaining at least one item of movement information describing a sought movement as a partial movement of an overall movement in an at least partially moved examination region. In the method, at least one excitation signal having a first frequency band is output and receiving signals generated by the excitation signal are recorded with a receiving coil arrangement, (e.g., a receiving coil arrangement of a magnetic resonance device), having a plurality of receiving channels. The coils of the receiving coil arrangement are designed to record a receiving frequency band including the first frequency band, wherein for ascertaining the movement information the complex receiving signals of the receiving channels are combined at one instant according to a combination specification ascertained over a period by an analysis of the receiving signals that identifies at least one component of a movement that contributes to the sought movement.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 8, 2017
    Inventors: Matthias Fenchel, Peter Speier
  • Patent number: 9645216
    Abstract: A method and a measuring-sequence-determining device for determining a measuring sequence for a magnetic resonance system based on at least one intra-repetition-interval time parameter are provided. During the determination of the measuring sequence in a gradient-optimization method, gradient-pulse parameters of the measuring sequence are automatically optimized to reduce at least one gradient-pulse-parameter maximum value. As a boundary condition in the gradient-optimization method, the intra-repetition-interval time parameter is kept constant at least within a specified tolerance value.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: May 9, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Björn Heismann, Mathias Nittka, Peter Speier, Aurélien Stalder
  • Publication number: 20170124730
    Abstract: The invention concerns a method for reconstructing medical image data which has access to free capacities of at least two computers and manages the use thereof for the purposes of the reconstruction. The method is a particularly reliable alternative to the reconstruction of medical image data based on algorithms that would require a working memory of above-average size.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 4, 2017
    Applicant: Siemens Healthcare GmbH
    Inventors: Christoph Forman, Rainer Kirsch, Christian Muehlhaeusser, Edgar Mueller, Peter Speier
  • Publication number: 20170061652
    Abstract: A computer-implemented method for performing isotropic reconstruction of Magnetic Resonance Imaging (MRI) data includes receiving a stack of slices acquired by an MRI device in two or more directions and reslicing the stack of slices into (i) an acquired view stack comprising high-resolution slices acquired in-plane, and (ii) a reslice stack comprising degraded slices acquired out of plane. An estimated slice profile is generated based on the stack of slices and the acquired view stack is convolved with the estimated slice profile to yield a simulated distorted slice stack. The simulated distorted slice stack is subtracted from the acquired view stack to yield a high-frequency band estimate and the high-frequency band estimate is combined with the reslice stack to yield isotropic reconstruction results.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 2, 2017
    Inventors: Ti-chiun Chang, Xiaoguang Lu, Peter Speier
  • Publication number: 20160245888
    Abstract: A method for generating motion information for an at least partially moving examination region includes outputting at least one first excitation signal with a first frequency band. The first excitation signal is picked up with a receive coil arrangement of a magnetic resonance system. The at least one coil of the receive coil arrangement is configured to pick up a receive frequency band that includes the first frequency band. At least one item of motion information for the examination region is determined from the picked up first excitation signal.
    Type: Application
    Filed: February 24, 2016
    Publication date: August 25, 2016
    Inventors: Jan Bollenbeck, Georg Pirkl, Robert Rehner, Peter Speier, Markus Vester
  • Patent number: 9414767
    Abstract: In a method to correct an EKG signal, the EKG signal is acquired, and used for R-spike triggering, during a magnetic resonance (MR) image acquisition sequence that produces interference signals in the EKG signal generated by gradient jumps, wherein the gradient jumps repeat at a fixed time interval, and wherein the duration of a cardiac cycle measured via the EKG signal is at least five times the time interval. During at least a first cardiac cycle, immediately after detection of the R-spike in the EKG signal no detection of the R-spike for triggering takes place for a dead time that is shorter than the duration of the cardiac cycle and during which the MR sequence is already running, and the EKG signal is acquired in that dead time as a reference signal. The reference signal is analyzed to extract interference signals that respectively repeat after the time interval, which are used to determine a correction signal having a duration equal to the time interval.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: August 16, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Peter Speier
  • Patent number: 9354289
    Abstract: In a method and apparatus to reduce movement artifacts in magnetic resonance images an essentially unmoving area of a region to be imaged is located in a region of high sensitivity of a first group of individual local antennas, and a moving area is located in the region of high sensitivity of a second group of local antennas. Spatially coded magnetic resonance signals are received by a first group of the local antennas and are individually processed further. Spatially coded nuclear magnetic resonance signals are received by the second group of local antennas and are combined with a weighting, using weighting factors. The weighting factors are determined so as to reduce gradient of the weighted, combined, spatially dependent sensitivity of the local antennas of the second group.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: May 31, 2016
    Assignee: Siemens Aktiengellschaft
    Inventors: Wilfried Landschuetz, Peter Speier
  • Publication number: 20160091586
    Abstract: In a method for operating a medical imaging apparatus having subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes, for a series of states of physiological processes that occur during the scan sequence. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions per observed state, that optimize the functional subsequences of the scan sequence locally.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Thorsten Speckner, Peter Speier, Daniel Nico Splitthoff
  • Publication number: 20160091585
    Abstract: In a method for determining time windows in a scan sequence, in which values of setting parameters of a scan can be changed during a current scan without adversely affecting the scan data obtained with the scan, comprising the following a scan sequence is loaded into a control computer, that then determines the time windows in the scan sequence in which values of setting parameters can be changed during a current scan, on the basis of an analysis of useful coherences in the scan sequence. The determined time windows are stored or processed so as to be available to operate an imaging apparatus to execute the scan sequence.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Thorsten Speckner, Peter Speier, Daniel Nico Splitthoff
  • Publication number: 20160091587
    Abstract: In a method for operating a medical imaging examination apparatus having multiple subsystems, current ambient conditions in a scan volume of the apparatus are determined and stored in a global ambient condition parameter set. A control computer starts a scan sequence according to a selected scan protocol, and sequence control data that define different functional sub-sequences for the respective subsystems are provided to the control computer. Different effective volumes are assigned to each functional sub-sequence, and respective current sub-regions in the effective volume associated with the respective sub-sequence are determined, in which a volume optimization is to take place. Control signals for the scan sequence are calculated using the sequence control data, the global ambient condition parameter set, and the determined current sub-regions of the affected volumes, in order to optimize the functional sub-sequences at least with regard to the current sub-region of the assigned effective volume.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Thorsten Speckner, Peter Speier, Daniel Nico Splitthoff, Michael Wullenweber
  • Publication number: 20160091589
    Abstract: In a method for operating a medical imaging apparatus having multiple subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions that optimize the functional subsequences of the scan sequence locally, at least with regard to a sub-region of the respective effective volumes.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Peter Speier
  • Publication number: 20160091590
    Abstract: In a method for operating a medical imaging examination apparatus having multiple subsystems controlled by a control computer in a scan sequence, a control protocol for the scan is provided to the control computer, which determines sequence control data for the control protocol that define different functional subsequences of the scan, with different effective volumes assigned to each functional subsequence. Current ambient conditions of the apparatus are determined that are decisive for the determined relevant sequence control data and associated effective volumes. Control signals for the scan are determined from the sequence control data, the effective volumes and the current ambient conditions determined that optimize the functional subsequences of the scan.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Thomas Loeffler, Thorsten Speckner, Peter Speier, Daniel Nico Splitthoff, Stephan Stoecker, Johann Sukkau, Michael Wullenweber
  • Publication number: 20160091588
    Abstract: In a method for operating a medical imaging apparatus having subsystems, a control protocol assigned to a scan sequence to be performed is provided to a control computer that determines sequence control data for the control protocol, which define different functional subsequences of the scan sequence. Different effective volumes are assigned to each functional subsequence, and current ambient conditions of the apparatus are determined for the sequence control data and associated effective volumes, for a series of states of physiological processes that occur during the scan sequence. Control signals for the scan sequence are determined from the sequence control data, the effective volumes and the current ambient conditions per observed state, that optimize the functional subsequences of the scan sequence locally.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 31, 2016
    Applicant: Siemens Aktiengesellschaft
    Inventors: Thomas Benner, Swen Campagna, Thorsten Feiweier, Bernd Kuehn, Peter Speier
  • Publication number: 20150342496
    Abstract: In a method and medical imaging apparatus, for generating medical image data records, raw data of the examination object are acquired by operation of a medical imaging scanner, a reconstruction algorithm issued for reconstructing a medical image data record on the basis of raw data and of a value of a physiological parameter. At least two medical image data records are created by applying the reconstruction algorithm at least twice to the acquired raw data using a different virtual value of the physiological parameter each time. The at least two medical image data records are provided from the reconstruction computer.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andreas Greiser, Peter Speier, Aurelien Stalder
  • Publication number: 20150282764
    Abstract: In a method for computing MR images of an examination object that performs a cyclic movement, MR signals are detected over at least two cycles of the cyclic movement. In each of these cycles, data for multiple MR images are recorded. Over these cycles, a magnetization of the examination object that influences the MR images approaches a state of equilibrium in a second of these cycles is closer to the state of equilibrium than in a first of these cycles. Movement information for various movement phases of the cyclic movement of the examination object is determined using the MR images from the second cycle, with movement information of the examination object determined for each of the various movement phases. Movement correction of the examination object is carried out in the MR images of the first cycle using the movement information determined in the second cycle.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 8, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Andreas Greiser, Michaela Schmidt, Peter Speier, Aurelien Stalder, Michael Zenge