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    • 8. 发明授权
    • Filler material for magnet resonant system self-shielded gradient coil assemblies
    • 用于磁共振系统自屏蔽梯度线圈组件的填充材料
    • US06441614B1
    • 2002-08-27
    • US09453082
    • 1999-12-02
    • William Alan EdelsteinRobert Arvin HedeenAnthony Mantone
    • William Alan EdelsteinRobert Arvin HedeenAnthony Mantone
    • G01V300
    • G01R33/3856G01R33/3854
    • A self-shielded gradient coil assembly for an MR imaging system has inner and outer gradient coil windings disposed in coaxial relationship and defining a hollow annular space therebetween. Inner and outer helical cooling tubes are affixed to the outer and inner surfaces of the inner and outer gradient coil windings, respectively, by a thermally conductive epoxy, and a concrete filler material substantially fills the remaining hollow annular space. The concrete filler material may be poured into the hollow annular space to fill the space, or a pre-formed hollow concrete cylinder may be inserted coaxially into the space, defining remaining inner and outer annular volumes which are then filled with a thermally conductive epoxy bonding together the inner and outer gradient coil windings, the cooling tubes and the hollow concrete cylinder.
    • 用于MR成像系统的自屏蔽梯度线圈组件具有以同轴关系设置的内部和外部梯度线圈绕组,并且在它们之间限定中空的环形空间。 内外螺旋冷却管分别通过导热环氧树脂固定在内外梯度线圈绕组的外表面和内表面上,并且混凝土填料基本上填充剩余的中空环形空间。 可以将混凝土填料材料注入中空环形空间以填充空间,或者预先形成的空心混凝土圆柱体可以同轴地插入到空间中,限定剩余的内部和外部环形体积,然后填充导热环氧树脂粘合 内外梯度线圈绕组,冷却管和空心混凝土缸体。