Patents by Inventor DAVID GRODZKI

DAVID GRODZKI 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: 11555876
    Abstract: The present disclosure relates to quantitative magnetic resonance imaging. A time series of magnetic resonance images of an examination region are assigned to different time points following an excitation is acquired by means of a magnetic resonance device, a signal evolution varying with respect to time is determined from the magnetic resonance images for each pixel from the magnetic resonance data of all of the magnetic resonance images and, by comparison of the signal evolution with comparison evolutions stored in a database, at least one quantitative result value on which the comparison evolution exhibiting the greatest agreement is based is assigned to a respective pixel.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: January 17, 2023
    Assignee: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Publication number: 20220397623
    Abstract: In a computer-implemented method for setting a field of view for a magnetic resonance scan, exclusion information describing a region of the original field of view that is unmapped owing to the distortion is ascertained on the basis of the distortion map for at least one first set of field-of-view parameters describing a rectangular or cuboidal original field of view, the exclusion information is used to determine a second set of field-of-view parameters to be used for the magnetic resonance scan, and the magnetic resonance scan is performed using the second set of field-of-view parameters.
    Type: Application
    Filed: June 9, 2022
    Publication date: December 15, 2022
    Applicant: Siemens Healthcare GmbH
    Inventors: Dominik Paul, Hans-Peter Fautz, Mario Zeller, David Grodzki, Hannah Hale
  • Patent number: 11501460
    Abstract: In a method for performing a magnetic resonance measurement of an organ structure of a patient using a magnetic resonance imaging system adapted to the imaging of the organ structure: a correct positioning of the organ structure of the patient is ascertained, a correct positioning of the magnetic resonance imaging system with regard to the positioning of the organ structure of the patient is ascertained, a magnetic resonance scanning protocol is selected, a spatial coverage of the magnetic resonance measurement with regard to the organ structure to be imaged is adjusted, and the magnetic resonance measurement is performed to acquire magnetic resonance image data of the organ structure.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 15, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Daniel Rinck, David Grodzki, Rene Kartmann, Mario Zeller
  • Patent number: 11488334
    Abstract: In a method for operating a magnetic resonance (MR) apparatus, MR raw-data is acquired from an acquisition region of a patient for a sampling region of k-space using a MR sequence that employs ultrashort echo times; a first MR image dataset is reconstructed from the MR raw-data of the k-space region; a second MR image dataset is reconstructed from the MR raw-data in a central subregion of the sampling region in k-space; a resolution of the second MR image dataset is interpolated to increase the resolution of the second MR image dataset to a resolution of the first magnetic resonance image dataset; and the first and second MR image datasets are combined to obtain an output MR image dataset.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: November 1, 2022
    Assignee: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Patent number: 11474177
    Abstract: In a method for MRI where k-space describing spatial frequencies in an acquisition volume (AV) is scanned, a first measured data acquisition is performed in the AV with a first gradient field strength of a gradient field, including irradiating a RF pulse into the AV and acquiring a first series of measured values spaced apart temporally, a second measured data acquisition is performed with a second, different gradient field strength, including irradiating a RF pulse into the AV and acquiring a second series of measured values spaced apart temporally. With the first measured data acquisition, the first measured values for a respective response signal are acquired at a first time interval from one another and with the second measured data acquisition, the second measured values for a respective response signal are acquired at a second, different time interval from one another.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: October 18, 2022
    Assignee: Siemens Healtchare GmbH
    Inventor: David Grodzki
  • Publication number: 20220308146
    Abstract: Methods and systems are provided for identifying radio frequency (RF) interference without an RF room during imaging in a magnetic resonance tomography system. The method includes performing an acquisition, wherein scanning of a k-space along a trajectory takes place and an angle of rotation ? exists between a scan start position of a first individual acquisition and a scan start position of a following second individual acquisition. A first image is obtained from the first individual acquisition and a second image is obtained from the second individual acquisition. One of the two images is rotated in respect of the other image about the angle of rotation ?. A correlation is determined between the one rotated image and the other image, and a point of interference is identified from the correlation.
    Type: Application
    Filed: February 24, 2022
    Publication date: September 29, 2022
    Inventors: David Grodzki, Stephan Kannengiesser
  • Publication number: 20220296119
    Abstract: A method for performing a magnetic resonance measurement of a patient using a magnetic resonance apparatus is provided. The magnetic resonance apparatus includes a radiofrequency antenna unit for producing an excitation pulse. A first B0 field map for a first motion state of the patient, and a second B0 field map for a second motion state of the patient are provided. A first excitation pulse for the first motion state, and a second excitation pulse for the second motion state are determined based on the first B0 field map and the second B0 field map. A magnetic resonance measurement is performed, during which the motion state of the patient is monitored. When the patient is in the first motion state, the radiofrequency antenna unit transmits the first excitation pulse. When the patient is in the second motion state, the radiofrequency antenna unit transmits the second excitation pulse.
    Type: Application
    Filed: March 17, 2022
    Publication date: September 22, 2022
    Inventors: David Grodzki, Dieter Ritter
  • Patent number: 11448716
    Abstract: The invention relates to a method for optimizing an MR imaging sequence with a plurality of sequence blocks where gradient requirements of logical gradients switched along axes including a read, slice, and phase axis are determined. Based on the requirements, a reference gradient is determined among the logical gradients having a longest minimum duration relative to remaining logical gradients within the sequence block during which the reference gradient is switched on. A scaling factor is determined for each of the logical gradients. The scaling factors for the logical gradient factors are updated taking into account the determined stretch ratios, and optimized amplitudes are determined for the logical gradients based on the updated scaling factors.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: September 20, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Waqas Majeed, David Grodzki, Florian Maier, Himanshu Bhat
  • Publication number: 20220291316
    Abstract: The present disclosure is directed to techniques for actuation of a magnetic resonance device for generating a high frequency pulse for specific saturation of nuclear spins in an examination region of an examination object. The techniques may include providing a frequency spectrum of the examination region, providing a B0 field map, establishing a first resonance frequency for a first tissue and a second resonance frequency for a second tissue taking account of the frequency spectrum, determining a saturation pulse by establishing a high frequency pulse configured for a spectrally selective excitation of the first tissue and the second tissue taking account of the first resonance frequency, the second resonance frequency and the B0 field map, and outputting the saturation pulse by means of the high frequency antenna unit.
    Type: Application
    Filed: March 10, 2022
    Publication date: September 15, 2022
    Applicant: Siemens Healthcare GmbH
    Inventors: David Grodzki, Dieter Ritter
  • Publication number: 20220280117
    Abstract: The disclosure relates to an imaging apparatus for acquiring image data from a diagnostically-relevant body region of a patient comprising a sensor and a correction unit, wherein the at least one sensor is embodied to output a signal containing information on movement of the diagnostically relevant body region of the patient and the correction unit is embodied to receive the signal from the at least one sensor, and to apply a correction method in dependence on the signal to reduce the influence of the movement of the diagnostically relevant body region of the patient on an imaging examination. The disclosure further relates to a local coil for acquiring magnetic resonance signals in a frequency and power range of a magnetic resonance measurement, and a method for correcting patient movement.
    Type: Application
    Filed: February 24, 2022
    Publication date: September 8, 2022
    Applicant: Siemens Healthcare GmbH
    Inventors: Mario Zeller, David Grodzki
  • Publication number: 20220187399
    Abstract: In accordance with a method for operating an MRT system a first MR recording is performed so as to map an object to generate first MR data that represents the object. The first MR recording is performed in accordance with a first k-space scanning scheme and during the first MR recording at least one first excitation pulse is transmitted. A second MR recording that is different from the first MR recording is performed to generate second MR data and a noise component is determined in dependence upon the second MR data by a computing unit and the noise component represents an influence of at least one external noise source. An MR image is generated by the computing unit in dependence upon the first MR data and in dependence upon the noise component.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 16, 2022
    Inventors: Rainer Schneider, Stephan Biber, David Grodzki, Stephan Kannengie├čer
  • Publication number: 20220187394
    Abstract: To operate a magnetic resonance tomography system, first analysis signals are received by a main receive antenna and an auxiliary receive antenna. Based thereon, a first interference source and first weighting factors are determined. Second analysis signals are received by the main receive antenna and the auxiliary receive antenna and in accordance with the first weighting factors, a combination of the second analysis signals is created. Based thereon, a second interference source is determined. Second weighting factors are determined in order to suppress the influence of the first interference source and an influence of the second interference source. A magnetic resonance signal is received during an examination phase by the main receive antenna and an interference signal by the auxiliary receive antenna. An interference-suppressed magnetic resonance signal is created as a combination of the magnetic resonance signal and the interference signals depending on the second weighting factors.
    Type: Application
    Filed: November 22, 2021
    Publication date: June 16, 2022
    Inventors: Stephan Biber, Rainer Schneider, Stephan Kannengie├čer, David Grodzki
  • Patent number: 11275135
    Abstract: A method for suppressing interference signals during an image acquisition with a magnetic resonance tomography scanner that has an antenna and an interference signal sensor is provided. The magnetic resonance tomography scanner receives a reference interference signal via the interference signal sensor, receives a magnetic resonance signal via the antenna, and reduces a portion of an interference signal in the magnetic resonance signal as a function of the reference interference signal. During the reduction of the interference signal, the method takes into account the fact that the reference interference signal also has a signal portion of the magnetic resonance signal.
    Type: Grant
    Filed: July 24, 2020
    Date of Patent: March 15, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Stephan Biber, David Grodzki
  • Publication number: 20220065965
    Abstract: Method for optimizing an MR control sequence for acquiring MR data of an examination subject by means of an MR device having gradient coils. The method includes providing an MR control sequence having sequence portions, each having an excitation portion, a phase encoding portion and a readout portion, wherein the phase encoding portion is arranged in each case between the excitation portion and the readout portion with respect to time; providing a defined parameter for the MR control sequence; providing an optimization objective; ascertaining usage time of the gradient coils between the excitation portion and the readout portion with respect to time for each of the sequence portions; optimizing the excitation portions for each of the sequence portions considering the ascertained usage time for the corresponding sequence portion and the defined parameter with regard to the optimization objective; and providing the optimized MR control sequence having the optimized excitation portions.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 3, 2022
    Applicant: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Publication number: 20220050158
    Abstract: An MRI scanner and a method for operation of the MRI scanner are provided. The MRI scanner has a first receiving antenna for receiving a magnetic resonance signal from a patient in a patient tunnel, a second receiving antenna for receiving a signal having the Larmor frequency of the magnetic resonance signal, and a receiver. The second receiving antenna is located outside of the patient tunnel or near an opening thereof. The receiver has a signal connection to the first receiving antenna and the second receiving antenna and is configured to suppress an interference signal by the second receiving antenna in the magnetic resonance signal received by the first receiving antenna.
    Type: Application
    Filed: October 27, 2021
    Publication date: February 17, 2022
    Inventors: Stephan Biber, Ian Edward Nichols, David James Sadler, David Grodzki, Markus Vester
  • Patent number: 11251998
    Abstract: A pilot tone device for acquiring physiological data of a patient and a magnetic resonance tomography system with a corresponding pilot tone device are provided. The pilot tone device has a pilot tone transmitter that is designed to transmit a pilot tone in an ISM band.
    Type: Grant
    Filed: June 14, 2020
    Date of Patent: February 15, 2022
    Assignee: Siemens Healthcare GmbH
    Inventors: Stephan Biber, David Grodzki
  • Publication number: 20220018919
    Abstract: A magnetic resonance tomography scanner with a noise suppressor for suppressing interferences of reception and a method for operation of the magnetic resonance tomography scanner are provided. The noise suppressor receives an interference signal with a sensor, determines a noise suppression signal with a noise suppression controller, and sends the noise suppression signal using a controllable radio frequency amplifier via a transmit antenna, so that the interference signal on a receive antenna of the magnetic resonance tomography scanner is reduced.
    Type: Application
    Filed: July 14, 2021
    Publication date: January 20, 2022
    Inventors: David Grodzki, Rainer Schneider
  • Patent number: 11199598
    Abstract: An MRI scanner and a method for operation of the MRI scanner are provided. The MRI scanner has a first receiving antenna for receiving a magnetic resonance signal from a patient in a patient tunnel, a second receiving antenna for receiving a signal having the Larmor frequency of the magnetic resonance signal, and a receiver. The second receiving antenna is located outside of the patient tunnel or near an opening thereof. The receiver has a signal connection to the first receiving antenna and the second receiving antenna and is configured to suppress an interference signal by the second receiving antenna in the magnetic resonance signal received by the first receiving antenna.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: December 14, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Stephan Biber, Ian Edward Nichols, David James Sadler, David Grodzki, Markus Vester
  • Patent number: 11150314
    Abstract: Automated setting techniques for MR imaging with ultra-short echo times in a region to be examined are described. With the method protocol parameter values for an MR imaging method are determined. The protocol parameters comprise a predetermined imaging resolution. Optimized values for echo time and bandwidth are also determined based on an image signal simulation, which is based on the determined protocol parameters. The signal to noise ratio and point spread function are used as optimization criteria.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: October 19, 2021
    Assignee: Siemens Healthcare GmbH
    Inventor: David Grodzki
  • Patent number: 11137468
    Abstract: In a method and magnetic resonance imaging apparatus having a scanner that for acquires a magnetic resonance dataset, a magnetic resonance sequence is provided to a computer and is converted in the computer into a digital sequence execution signal that includes a target gradient waveform in the form of a time-discrete target gradient signal the computer calculates a pre-GIRF gradient signal by applying a digital pre-emphasis filter to the target gradient signal. The computer transmits the pre-GIRF gradient signal to the magnetic resonance system scanner and) the scanner executes the digital sequence execution signal containing the pre-GIRF gradient signal in order to acquire magnetic resonance raw data.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: October 5, 2021
    Assignee: Siemens Healthcare GmbH
    Inventors: Thomas Kluge, David Grodzki