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    Determining test positions in a target volume for a magnetic resonance system test measurement to improve magnetic resonance image quality of the system
    1.
    发明授权
    Determining test positions in a target volume for a magnetic resonance system test measurement to improve magnetic resonance image quality of the system 有权

    公开(公告)号：US12189009B2

    公开(公告)日：2025-01-07

    申请号：US17955784

    申请日：2022-09-29

    Applicant: Siemens Healthineers AG

    Inventor： Mario Zeller ,  Adam Kettinger

    IPC: G01R33/54

    Abstract: In a method for determining at least one test position for a test measurement to be recorded by means of a magnetic resonance system, a test image is recorded, and at least one test position is selected based on the test image. With methods for the compensation of effects of deviations of gradients actually generated during a readout duration from gradients planned for this readout time duration, the selection of test positions according to the disclosure based on a test image advantageously ensures that the test positions lie in a recording region favorable for the test measurement, e.g. also within an examination object to be examined in the test image. A higher image quality in MR images, which were generated using test measurements carried out at test positions positioned according to the disclosure, can therefore be achieved.

    Echo Planar Slice Multiplexing
    5.
    发明申请
    Echo Planar Slice Multiplexing 有权

    公开(公告)号：US20240385271A1

    公开(公告)日：2024-11-21

    申请号：US18664645

    申请日：2024-05-15

    Applicant: Siemens Healthineers AG

    Inventor： Thorsten Feiweier ,  Mario Zeller ,  Adam Kettinger ,  Michael Köhler ,  Max Müller

    IPC: G01R33/561 ,  G01R33/483 ,  G01R33/565

    Abstract: Method for separating measurement data of an examination object, which data was acquired in collapsed form simultaneously for slices using an EPI SMS technique, into measurement data of individual slices, first and second sets of reference measurement data for separating the measurement data are acquired for each of the slices using a GRE acquisition technique, wherein the reference measurement data in the first set is acquired during switching of readout gradients of a first polarity, and the reference measurement data in the second set is acquired during switching of readout gradients of a second polarity. Based on the two sets of reference measurement data, corresponding separate first calibration data is determined from the reference measurement data acquired using a GRE acquisition technique while switching readout gradients of a first polarity, and second calibration data is determined from the reference measurement data acquired while switching readout gradients of a second polarity.

    PREPARING A MAGNETIC RESONANCE IMAGING METHOD IN COMPLIANCE WITH STIMULATION-BASED LIMITATIONS
    6.
    发明公开
    PREPARING A MAGNETIC RESONANCE IMAGING METHOD IN COMPLIANCE WITH STIMULATION-BASED LIMITATIONS 审中-公开

    公开(公告)号：US20240295621A1

    公开(公告)日：2024-09-05

    申请号：US18592973

    申请日：2024-03-01

    Applicant: Siemens Healthineers AG

    Inventor： Thorsten Feiweier ,  Max Müller ,  Adam Kettinger ,  Mario Zeller ,  Gudrun Ruyters

    IPC: G01R33/54 ,  G01R33/56 ,  G01R33/563

    CPC classification number: G01R33/543 ,  G01R33/5608 ,  G01R33/56341

    Abstract: A method for preparing magnetic resonance imaging of an object under examination is described. A plurality of representative pulse sequence segments are generated, each of which is associated with a reference gradient amplitude of the gradient pulse having the highest stimulation potential of the representative pulse sequence segment, and the stimulation potential of which is representative of a group of partially different pulse sequences. For each of the representative pulse sequence segments, a maximum gradient slew rate is determined for which a permitted maximum value of the stimulation potential is not exceeded. One of the representative pulse sequence segments is determined and selected, for a measurement protocol to be planned for a magnetic resonance imaging to be performed, according to the gradient amplitude of the gradient pulse having the highest stimulation potential of a pulse sequence segment of the pulse sequence on which the measurement protocol is based. The pulse sequence segment of the pulse sequence on which the measurement protocol is based is adjusted in such a way that a maximum gradient slew rate associated with the selected representative pulse sequence segment is also not exceeded by the pulse sequence segment of the pulse sequence on which the measurement protocol is based.

    Preparing a magnetic resonance imaging method in compliance with stimulation-based limitations
    8.
    发明授权
    Preparing a magnetic resonance imaging method in compliance with stimulation-based limitations 有权

    公开(公告)号：US12222412B2

    公开(公告)日：2025-02-11

    申请号：US18592973

    申请日：2024-03-01

    Applicant: Siemens Healthineers AG

    Inventor： Thorsten Feiweier ,  Max Müller ,  Adam Kettinger ,  Mario Zeller ,  Gudrun Ruyters

    IPC: G01V3/00 ,  G01R33/54 ,  G01R33/56 ,  G01R33/563

    Abstract: A method for preparing magnetic resonance imaging of an object under examination is described. A plurality of representative pulse sequence segments are generated, each of which is associated with a reference gradient amplitude of the gradient pulse having the highest stimulation potential of the representative pulse sequence segment, and the stimulation potential of which is representative of a group of partially different pulse sequences. For each of the representative pulse sequence segments, a maximum gradient slew rate is determined for which a permitted maximum value of the stimulation potential is not exceeded. One of the representative pulse sequence segments is determined and selected, for a measurement protocol to be planned for a magnetic resonance imaging to be performed, according to the gradient amplitude of the gradient pulse having the highest stimulation potential of a pulse sequence segment of the pulse sequence on which the measurement protocol is based. The pulse sequence segment of the pulse sequence on which the measurement protocol is based is adjusted in such a way that a maximum gradient slew rate associated with the selected representative pulse sequence segment is also not exceeded by the pulse sequence segment of the pulse sequence on which the measurement protocol is based.

    Computer-implemented method for operating an imaging facility, imaging facility, computer program and electronically readable data carrier
    9.
    发明授权
    Computer-implemented method for operating an imaging facility, imaging facility, computer program and electronically readable data carrier 有权

    公开(公告)号：US12136144B1

    公开(公告)日：2024-11-05

    申请号：US18637722

    申请日：2024-04-17

    Applicant: Siemens Healthineers AG

    Inventor： Mario Zeller

    IPC: G06T11/00 ,  G01R33/56

    Abstract: The disclosure relates to techniques for operating an imaging facility for preparing an imaging process. For each imaging process, at least one image dataset is reconstructed in a reconstruction step from raw data recorded in accordance with at least one recording protocol using a reconstruction facility with reconstruction software. For advance calculation of a duration for the reconstruction step, an input dataset comprising at least one protocol parameter of the recording protocol influencing the duration of the reconstruction step and at least one hardware parameter describing the hardware of the reconstruction facility and/or at least one software parameter describing the reconstruction software is compiled, and the duration is ascertained from the input dataset by way of a trained advance calculation function, which is trained by machine learning.

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