High-frequency coil device and magnetic resonance imaging device using same

The invention provides a high-frequency coil device and a magnetic resonance imaging apparatus using the same, wherein the distance between coils can be maintained in any mounting position in an RF coil including a movable coil unit, and uniform sensitivity distribution and high sensitivity can be realized. The high-frequency coil device is provided with: a first coil unit capable of moving on a substantially circular track; and a second coil unit fixed in the substantially circular track, the first coil unit and the second coil unit are disposed at substantially point-symmetric positions, and the magnetic coupling of the conductor loops included in the two coil units is maintained substantially constant in the movable range of the first coil unit. 本发明提供一种在包含可动的线圈单元的RF线圈中无论在哪个安装位置都能够维持线圈之间的距离、且能够实现均匀的灵敏度分布和高灵敏度的高频线圈装置及使用该高频线圈装置的磁共振成像装置。所述高频线圈装置具备：第1线圈单元，能够在大致圆形的轨道上移动；及第2线圈单元，固定于该大致圆形的轨道内，第1线圈单元和第2线圈单元配置于大致点对称的位置，在第1线圈单元的可动范围中，包含于两个线圈单元中的导体环的磁耦合保持为大致恒定。