- 专利标题： METHOD AND DEVICE FOR CONTROLLING A MAGNETIC RESONANCE IMAGING SYSTEM
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申请号： EP19174690.8申请日： 2019-05-15
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公开(公告)号： EP3739353A1公开(公告)日： 2020-11-18
- 发明人: Bampton, Adrian , Biber, Stephan , Johnstone, Adam Paul , Nistler, Jürgen , Potthast, Andreas , Vester, Markus , de Oliveira, Andre
- 申请人： Siemens Healthcare GmbH
- 申请人地址： Henkestraße 127 91052 Erlangen DE
- 专利权人： Siemens Healthcare GmbH
- 当前专利权人： Siemens Healthcare GmbH
- 当前专利权人地址： Henkestraße 127 91052 Erlangen DE
- 主分类号： G01R33/389
- IPC分类号： G01R33/389 ; G01R33/58 ; G01R33/3815
摘要：
The invention describes a calibration method for calibrating a measuring element for determining the electric current I flowing through a basic-field magnet of a magnetic resonance imaging system, comprising the steps:
- performing a measurement with the measuring element,
- performing a frequency measurement in the magnetic field of the basic-field magnet with a frequency measuring unit,
wherein the measurement of the measuring element and the frequency measurement are corresponding to the same magnetic field of the basic-field magnet,
- calculating a calibration factor based on the deviation between the measurement of the measuring element and the frequency measurement,
- calibrating the measuring element or the electric current in the basic-field magnet based on the calibration factor.
The invention further describes a ramping method, a system for calibrating a measuring element, a magnet power supply unit, a control unit and a magnetic resonance imaging system.
- performing a measurement with the measuring element,
- performing a frequency measurement in the magnetic field of the basic-field magnet with a frequency measuring unit,
wherein the measurement of the measuring element and the frequency measurement are corresponding to the same magnetic field of the basic-field magnet,
- calculating a calibration factor based on the deviation between the measurement of the measuring element and the frequency measurement,
- calibrating the measuring element or the electric current in the basic-field magnet based on the calibration factor.
The invention further describes a ramping method, a system for calibrating a measuring element, a magnet power supply unit, a control unit and a magnetic resonance imaging system.
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