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发明授权
CN1947656B 射频屏蔽方法、磁共振成像设备和发射/接收表面线圈 失效 - 权利终止

射频屏蔽方法、磁共振成像设备和发射/接收表面线圈
摘要：
为了降低隔离表面线圈(10)和安装在磁体部件(1)侧上的体线圈(2)的成本，用于表面线圈(10)的射频屏蔽(12)放置在安装于MRI设备(100)的磁体部件(1)侧上的体线圈(2)和不安装在磁体部件(1)侧上的表面线圈体(11)之间。用于表面线圈(10)的射频屏蔽(12)抑制体线圈(2)接收发自于表面线圈体(11)的射频脉冲。因为体线圈(2)中的感应电压大幅度降低，在体线圈(2)侧上提供的开关不再需要电阻元件用于高电压和高电流。因此，设备(100)可以简化，成本可以降低。结果，设备(100)的可靠性得到改善。
摘要（英）：

In order to reduce the cost for isolation between a surface coil and a body coil installed on a magnet assembly side, an RF shield for a surface coil is disposed between a body coil installed on a magnet assembly side of an MRI apparatus and a surface coil body not installed on the magnet assembly side. The reception by the body coil of RF pulses transmitted from the surface coil body is suppressed by the RF shield for the surface coil. Since an induced voltage in the body coil drops to a great extent, a switch provided on the body coil side no longer requires a component resistant to high voltage and high current. Thus, the apparatus can be simplified and the cost can be reduced. As a result, the reliability of the apparatus is improved.

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