公开(公告)号：US20200333410A1

公开(公告)日：2020-10-22

申请号：US16699415

申请日：2019-11-29

申请人： Gudrun Ruyters ,  Andrew Dewdney ,  Manuel Stich ,  Herbert Köstler ,  Christiane Pfaff ,  Tobias Wech ,  Adrienne Campbell-Washburn

发明人： Gudrun Ruyters ,  Andrew Dewdney ,  Manuel Stich ,  Herbert Köstler ,  Christiane Pfaff ,  Tobias Wech ,  Adrienne Campbell-Washburn

IPC分类号： G01R33/385 ,  G01R33/565

摘要： The disclosure relates to methods, devices, and systems for developing gradient system characterization functions and imaging a patient using pre-emphasized magnetic field components in a magnetic resonance (MR) device, wherein the processes allow for a reduction in a number of artifacts when reconstructing the magnetic resonance image. The gradient system characterization function (e.g., a gradient system transfer function) may be developed by measuring a behavior of the MR device at a target temperature and developing at least one gradient system characterization function for a gradient coil of the MR device at the target temperature based on the measured behavior. A patient may be subsequently imaged by the MR device, wherein the imaging process comprises measuring a temperature of a gradient coil, determining a gradient system characterization function at the measured temperature, calculating a pre-emphasized gradient of the gradient coil, and imaging the patient using the pre-emphasized magnetic field component.

公开(公告)号：US11112472B2

公开(公告)日：2021-09-07

申请号：US16699415

申请日：2019-11-29

申请人： Gudrun Ruyters ,  Andrew Dewdney ,  Manuel Stich ,  Herbert Köstler ,  Christiane Pfaff ,  Tobias Wech ,  Adrienne Campbell

发明人： Gudrun Ruyters ,  Andrew Dewdney ,  Manuel Stich ,  Herbert Köstler ,  Christiane Pfaff ,  Tobias Wech ,  Adrienne Campbell

IPC分类号： G01R33/385 ,  G01R33/565

摘要： A gradient system characterization function (e.g., a gradient system transfer function) may be developed by measuring a behavior of the MR device at a target temperature and developing at least one gradient system characterization function for a gradient coil of a magnetic resonance (MR) device at the target temperature based on the measured behavior. A patient may be subsequently imaged by the MR device, wherein the imaging process comprises measuring a temperature of a gradient coil, determining a gradient system characterization function at the measured temperature, calculating a pre-emphasized gradient of the gradient coil, and imaging the patient using the pre-emphasized magnetic field component.