HIGH-FREQUENCY COIL DEVICE AND MAGNETIC RESONANCE IMAGING APPARATUS USING THE SAME
To provide a high-frequency coil device that can maintain a distance between coils at any attachment position and achieve uniform sensitivity distribution and high sensitivity in an RF coil including a movable coil unit.SOLUTION: A high-frequency coil device includes: first coil unit that can move o...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; jpn |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | To provide a high-frequency coil device that can maintain a distance between coils at any attachment position and achieve uniform sensitivity distribution and high sensitivity in an RF coil including a movable coil unit.SOLUTION: A high-frequency coil device includes: first coil unit that can move on a substantially-circular trajectory; and a second coil unit that is fixed in the substantially-circular trajectory. The first coil unit and the second coil unit are arranged at substantially-point symmetrical positions. Magnetic coupling of conductor loops contained in both coil units is kept almost constant in the movable range of the first coil unit.SELECTED DRAWING: Figure 1
【課題】可動なコイルユニットを含むＲＦコイルにおいて、どの装着位置においてもコイル間の距離を維持することができ、均一な感度分布と高い感度を達成できる高周波コイル装置を提供する。【解決手段】略円形の軌道上を移動可能な第１のコイルユニットと、当該略円形軌道内に固定された第２のコイルユニットと、を備え、第１のコイルユニットと第２のコイルユニットは、略点対称の位置に配置されており、第１のコイルユニットの可動範囲において、両コイルユニットに含まれる導体ループの磁気結合がほぼ一定に保たれる。【選択図】図１ |
|---|