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.

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.