Method for compensating for a magnetic field disturbance affecting a magnetic resonance device, and a magnetic resonance device
    1.
    发明申请
    Method for compensating for a magnetic field disturbance affecting a magnetic resonance device, and a magnetic resonance device 审中-公开
    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

    公开(公告)号:US20060076954A1

    公开(公告)日:2006-04-13

    申请号:US11244779

    申请日:2005-10-06

    IPC分类号: G01V3/00

    CPC分类号: G01R33/389

    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.

    摘要翻译: 本发明涉及一种用于补偿影响磁共振装置的磁场干扰的方法,由此磁场扰动是由磁共振装置的部件偏转引起的。 为此,以时间依赖的方式获得引起偏转的偏转或变量,提供了数学场干扰模型,其对磁场上的偏转的影响进行建模,并且获得的偏转或引起偏转的变量 通过场干扰模型转换成用于补偿磁场发生器或高频天线的控制变量。 以这种方式控制的补偿磁场发生器产生例如补偿磁场干扰的补偿磁场。 以这种方式控制的高频天线例如在其中频与磁场干扰相匹配。