Patents by Inventor Dominik Paul

Dominik Paul 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: 10451698
    Abstract: In a magnetic resonance (MR) apparatus and operating method, a first pulse sequence is executed in order to acquire echo signals from a target volume produced by radiation of a radio-frequency (RF) excitation pulse, thereby obtaining an original measurement dataset. A reference measurement dataset is then acquired by executing another pulse sequence immediately after acquisition of the aforementioned echo signals. These steps are repeated until the original measurement dataset has reached a predetermined degree of completeness that is still incomplete according to the Nyquist criterion. The original measurement dataset is then completed using the reference measurement dataset and a parallel acquisition technique.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: October 22, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Wilhelm Horger, Dominik Paul, Mario Zeller
  • Publication number: 20190317169
    Abstract: In a method for reconstructing contrast levels from magnetic resonance (MR) acquisitions using a parallel acquisition (PAT) technique, MR raw data for at least two contrast levels are generated or acquired, the raw data includes reference lines. Reference line images are reconstructed from the reference lines of the MR raw data for at least two of the contrast levels. A histogram analysis is implemented on the basis of the reference line images. A PAT reconstruction of image representations of the different contrast levels is implemented, wherein the decision as to which reference lines are used for the PAT reconstruction being made on the basis of the histogram analysis.
    Type: Application
    Filed: April 15, 2019
    Publication date: October 17, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul
  • Publication number: 20190310340
    Abstract: High-quality magnetic resonance (MR) recordings are triggered with movements of an object, for example the heartbeat. In a method and apparatus for obtaining raw data reconstruction for an MR image, a spin-echo-based sequence is executed that includes applying a static magnetic field and applying a magnetization pulse train. A movement of the object to be imaged is detected and a target contrast for two tissue types of the object is prespecified. The repetition time of the pulse train is set in dependence on the movement of the object to be imaged, and the flip angle is set such that prespecified target contrast for the two tissue types is obtained at the set repetition time.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Hans-Peter Fautz, Dominik Paul
  • Publication number: 20190310337
    Abstract: In a pulse sequence that is produced and used for controlling a magnetic resonance imaging system as part of an inversion recovery measurement sequence, a number of partial volumes to be imaged are excited, wherein the pulse sequence includes a start sequence followed by an excitation sequence. The start sequence is series arrangement of a succession of at least two initial inversion pulses for inverting partial volumes. The excitation sequence is series arrangement of excitation blocks and additional inversion pulses, with each excitation block being followed by additional inversion pulses, so that excitation blocks and additional inversion pulses always alternate.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 10, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul, Daniel Nico Splitthoff, Mario Zeller
  • Publication number: 20190310339
    Abstract: In order to optimize magnetic resonance (MR) images in spin echo-based imaging, MR raw data are acquired by applying a static magnetic field, an excitation pulse, a refocusing pulse, and an RF pulse at the same time point as an echo elicited by the pulses with the result that the magnetization in the negative z-direction is deflected by a flip angle. The flip angle is selected such that, given a specified repetition time of the excitation pulse, a predetermined contrast is provided for two specified tissue types of the subject to be imaged. An MR image is reconstructed from the acquired MR raw data.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Hans-Peter Fautz, Dominik Paul
  • Patent number: 10429464
    Abstract: In a magnetic resonance apparatus having a scanner that generates a basic magnetic field in an imaging volume, and an operating method to acquire data from an entirety of a recording volume, wherein the scanner has a global shim coil acting on the entire imaging volume, and a local shim coil acting, with the global shim coil, on a sub-volume containing a region of interest, a first adjustment volume is established that contains the recording volume. A smaller, second adjustment volume is established containing the region of interest, and at most, the sub-volume. Using a field map of the basic magnetic field that covers the first adjustment volume, shim currents are respectively identified for the global shim unit, for homogenizing the first adjustment volume, and for the local shim unit, for homogenizing the second adjustment volume, accounting for the effect of the first shim currents on the second adjustment volume.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: October 1, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Daniel Niederloehner, Dominik Paul
  • Patent number: 10422843
    Abstract: In a method and magnetic resonance apparatus for modification of a magnetic resonance actuation sequence, a parameter of the magnetic resonance actuation sequence is specified that, is categorized in one of a number of predefined categories for this parameter to which a boundary condition is linked. The boundary condition is taken into account and observed during the determination of a property of the pulses to be activated.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: September 24, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: David Grodzki, Dominik Paul
  • Patent number: 10416261
    Abstract: In a method and apparatus for recording magnetic resonance (MR) data of a target region of a subject, the recording process is divided into subsections each follow the other after a repetition time. Before each recording of MR data of a subsection with a measurement sequence, an adiabatic preparatory pulse is activated that inverts the longitudinal magnetization of a saturation molecule type, from which no MR data are to be recorded. An excitation pulse is emitted spaced by an inversion time from the preparatory pulse. Before the first preparatory pulse, at least one adiabatic preparation pulse is emitted that inverts the longitudinal magnetization with a timing such that the longitudinal magnetization of the saturation molecule type at the time of the first preparatory pulse at a steady state value, which occurs again before the repetition time after each preparatory pulse.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: September 17, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul
  • Publication number: 20190277930
    Abstract: In a method and computer for creating a pulse sequence for controlling a magnetic resonance (MR) tomography system to generate image data, raw MR data are acquired by exciting different transverse magnetizations in a number of sub-volumes of the subject, with a sequence of pulse iterations being executed that each prepare, excite and read out sub-volumes. The pulse iterations are designed so that a readout occurs when the pulse sequence is applied between a preparation of two spatially directly adjacent sub-volumes.
    Type: Application
    Filed: March 6, 2019
    Publication date: September 12, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Mario Zeller
  • Publication number: 20190277931
    Abstract: In a method and apparatus for recording magnetic resonance data for determining at least one parameter map describing a material parameter in the scanning region, the scanning area having a number of slices, a slice-specific preparation pulse is used, wherein magnetic resonance data are scanned after different waiting times following the preparation pulse. Magnetic resonance data of different waiting times are acquired from at least two slices, by determining an overall pulse by overlaying the slice-specific preparation pulses for the individual slices, and then activating the overall pulse to read out the magnetic resonance data of the slices with a readout sequence after the respective waiting times.
    Type: Application
    Filed: March 8, 2019
    Publication date: September 12, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Flavio Carinci, Mario Zeller
  • Patent number: 10386436
    Abstract: In a method and apparatus for generating magnetic resonance (MR) measurement data of an object, (a) a multiband RF excitation pulse is radiated into the object to simultaneously selectively excite at least two slices, which do not overlap, in the object, and (b) echo signals generated are read out with at least two reception coils and are stored in a measurement data record, and (c) after reading out a last echo signal that follows from the multiband RF excitation pulse, a driven equilibrium module is radiated that includes at least one further multiband RF pulse. Steps (a) to (c) are repeated with different position encoding and/or while exciting different slices, until all desired measurement data are stored in the measurement data record. The measurement data contained in the measurement data record are separated into slice-specific measurement data records on the basis of coil sensitivity data of the reception coils used for read-out purposes.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 20, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul, Mario Zeller
  • Publication number: 20190250236
    Abstract: A method for operating a magnetic resonance device includes using an acquisition technique using a plurality of coil elements of a transmit and/or receive coil in parallel. For each coil element, a sensitivity map describing the spatial sensitivity of the respective coil element is acquired at the start of the acquisition procedure and used in the reconstruction of a magnetic resonance image dataset from the magnetic resonance data. Magnetic resonance data of the individual coil elements is thus merged. Reference information indicating the position of the patient and/or of the coil elements is measured at the start of the examination procedure. Comparison information supplementary thereto is measured during the acquisition procedure. A reacquisition of at least a portion of the sensitivity maps is performed if at least one recalibration criterion describing a deviation exceeding a threshold value is fulfilled in a comparison of the comparison data with the reference data.
    Type: Application
    Filed: February 11, 2019
    Publication date: August 15, 2019
    Inventors: Dominik Paul, Mario Zeller
  • Patent number: 10379187
    Abstract: In order to enable improved analysis of a magnetic resonance sequence, which provides a number of radio-frequency pulses for the acquisition of magnetic resonance measurement data of an object undergoing investigation by a magnetic resonance apparatus, the magnetic resonance sequence is provided to a computer and a first average radio-frequency output that is present during a first time window of the magnetic resonance sequence is determined. A second average radio-frequency output that is present during a second time window of the magnetic resonance sequence is determined. A value derived from the first average radio-frequency output and the second average radio-frequency output is provided from the computer.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: August 13, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Andreas Greiser, Dominik Paul, Daniel Nico Splitthoff
  • Publication number: 20190242962
    Abstract: A magnetic resonance apparatus and method acquire magnetic resonance data with a recording technique in which the Cartesian scanning of k-space is carried out differently, by a rotation of gradient directions around the center of k-space, for different recording sections of a respective part of the magnetic resonance data, and this recording technique is combined with an accelerating imaging technique for which reference data completely describing a reference range around the center of k-space are used for each individual slice to be scanned. At the beginning of the recording, a calibration area of k-space, which includes all the reference ranges required in the course of recording, is determined and a calibration data set of k-space is recorded in a calibration measurement with complete, Cartesian scanning of the calibration area. Reference data for each recording section are determined from this calibration data set.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 8, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Flavio Carinci, Mario Zeller
  • Publication number: 20190227139
    Abstract: In a method and magnetic resonance (MR) apparatus for creating an MR 3D image dataset, spin echo sequences are used to acquire two raw datasets that are each undersampled, wherein the excitation pulses or the refocusing pulses radiated in the data acquisitions have an opposite phase for the two raw datasets. These two raw datasets are combined into a combined 3D raw dataset that is not undersampled, and a weighting matrix is calculated for use in calculating the raw data points that were not acquired in the first raw dataset and the raw data points not acquired in the second raw dataset. A first complete raw dataset and second complete raw dataset are thereby calculated, which are then combined. The MR 3D data is then reconstructed from tis combined raw dataset.
    Type: Application
    Filed: January 18, 2019
    Publication date: July 25, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul
  • Patent number: 10330759
    Abstract: In a method and apparatus for acquiring magnetic resonance (MR) data, an MR data acquisition scanner is operated, while a subject is situated therein to execute a simultaneous multislice (SMS) turbo spin echo (TSE) sequence by implementing a TSE-based reference scan to acquire reference data and an imaging scan, to acquire raw MR data from the subject. The reference data and the raw MR data are entered into a memory organized as k-space. A computer accesses the memory in order to make the k-space data, composed of said reference data and said image data, available in electronic form, as at least one data file.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: June 25, 2019
    Assignee: Siemens Healthcare GmbH
    Inventors: Flavio Carinci, Dominik Paul, Himanshu Bhat, Mario Zeller
  • Publication number: 20190178965
    Abstract: The disclosure relates to the automatic determination of correction factor values for producing MR images using a magnetic resonance system. A plurality of MR images is produced, wherein each MR image is produced using parameters with parameter values and using correction factors with correction factor values. In order to produce the MR images, MR data of the same examination object is acquired under the same external boundary conditions. The MR images are evaluated automatically in respect of artifacts in the respective MR image, in order to determine the MR image with the least artifacts among the MR images. The correction factor values are determined as those correction factor values which have been used to produce the MR image with the least artifacts. The parameters determine a sequence, with which the MR data is acquired for producing the MR images. The correction factors reduce influences which influence the acquisition of the MR data.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 13, 2019
    Inventors: Dominik Paul, Mario Zeller
  • Publication number: 20190178966
    Abstract: In a method and apparatus for generating a magnetic resonance data record, at least two excitation cycles are executed, wherein, in each excitation cycle, at least one magnetic resonance signal is recorded, using different phases with a first radio-frequency pulse in two consecutive excitation cycles, with at least one dephasing gradient being applied in an excitation cycle.
    Type: Application
    Filed: December 7, 2018
    Publication date: June 13, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Flavio Carinci, Daniel Nico Splitthoff
  • Patent number: 10317488
    Abstract: In a method and a magnetic resonance system for fat saturation when acquiring magnetic resonance data in a predetermined volume segment of an examination object, a SPAIR pulse is emitted and an RF excitation pulse is emitted following a predetermined time period after the SPAIR pulse, and magnetic resonance data are thereafter acquired. The time period of at least one slice is set so as to be different from the time period for the remaining slices.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: June 11, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jan Ole Blumhagen, Dominik Paul, Daniel Nico Splitthoff
  • Publication number: 20190167203
    Abstract: In a method and apparatus for characterizing an obstacle within an examination object using a medical image data set by the use of a database containing at least one data class, a trained artificial neural network defines and develops relationships between different obstacles, features and medical imaging data sets. A data entry of a data class is assigned by the neural network to the obstacle within the examination object and the obstacle within the examination object is characterized in an electronic output by this data entry.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Mario Zeller