Magnetic field generating device for NMR-CT
    30.
    发明公开
    Magnetic field generating device for NMR-CT 失效
    Eine ein Magnetfeld erzeugende VorrichtungfürNMR-CT。

    公开(公告)号:EP0161782A1

    公开(公告)日:1985-11-21

    申请号:EP85302389.3

    申请日:1985-04-04

    IPC分类号: H01F7/02 G01N24/06 A61B5/06

    摘要: A magnetic field generating device for nuclear magnetic resonance-computerized tomography comprising a pair of permanent magnets magnetized in the same direction with different-polarity poles mutually opposed to define an air gap, whose maximum energy product, (BH) max , is not less than 240kJ/m 3 , each of the opposing faces of the permanent magnets having a magnetic pole facing provided with an annular rib and, as occasion demands, at least one inner projection inside the annular rib, and the permanent magnets being coupled magnetically by a yoke to generate a magnetic field within the air gap.
    The present device is able to create a uniform and stable magnetic field, in spite of its small-sized body.

    摘要翻译: 一种用于核磁共振计算机断层摄影的磁场产生装置,包括一对永磁体,该永久磁体在相同方向上被磁化,所述永磁体与限定气隙相互相对的不同极性极磁极,其最大能量乘积(BH)max不小于 永磁体的相对面中的每一个具有面对设置有环形肋的磁极,并且根据需要,在环形肋内部具有至少一个内部突起,并且永久磁铁磁耦合 通过磁轭在气隙内产生磁场。 该设备能够创建均匀稳定的磁场,尽管其体积小。