发明申请
- 专利标题: Method for compensating for a magnetic field disturbance affecting a magnetic resonance device, and a magnetic resonance device
- 专利标题(中): 用于补偿影响磁共振装置的磁场干扰的方法和磁共振装置
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申请号: US11244779申请日: 2005-10-06
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公开(公告)号: US20060076954A1公开(公告)日: 2006-04-13
- 发明人: Ralph Kimmlingen , Axel Endt
- 申请人: Ralph Kimmlingen , Axel Endt
- 专利权人: Siemens Aktiengesellschaft,Siemens Magnet Technology Ltd.
- 当前专利权人: Siemens Aktiengesellschaft,Siemens Magnet Technology Ltd.
- 优先权: DE102004049497.5 20041011
- 主分类号: G01V3/00
- IPC分类号: G01V3/00
摘要:
The invention relates to a method for compensating for a magnetic field disturbance affecting a magnetic resonance device, whereby the magnetic field disturbance is caused by a deflection of a component of the magnetic resonance device. To this end, the deflection or a variable causing the deflection is acquired in timed-dependent fashion, a mathematical field disturbance model is provided which models the effect the of the deflection on the magnetic field, and the acquired deflection or the variable causing the deflection is converted by means of the field disturbance model into a control variable for a compensation magnetic field generator or a high-frequency antenna. The compensation magnetic field generator controlled in this manner generates, for example, a compensation magnetic field which compensates for the magnetic field disturbance. The high-frequency antenna controlled in this manner is, for example, matched in its mid frequency to the magnetic field disturbance.
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