公开(公告)号：US5483163A

公开(公告)日：1996-01-09

申请号：US104849

申请日：1993-08-12

申请人： Han Wen ,  Andrew S. Chesnick ,  Robert S. Balaban

发明人： Han Wen ,  Andrew S. Chesnick ,  Robert S. Balaban

IPC分类号： G01R33/36 ,  G01R33/28

CPC分类号： G01R33/3453 ,  G01R33/3628 ,  G01R33/34007 ,  G01R33/3642

摘要： An MRI probe/transmitter coil has a pair of concentric cylinders with a plurality of inductively coupled freely rotating resonant elements radially mounted between the two cylinders. The coil can be tuned both symmetrically by pivoting all the resonant elements uniformly or asymmetrically by tuning them individually. The coil is driven in quadrature by a quad-hybrid circuit. A substantial part of the electromagnetic energy is stored in the resonant elements outside of the loading region of the coil to reduce perturbation in the coil operation due to the characteristics of the test subject.

摘要翻译： MRI探针/发射器线圈具有一对同心圆筒，其具有径向安装在两个气缸之间的多个感应耦合的自由旋转的谐振元件。 可以通过单独调谐来均匀或不对称地枢转所有谐振元件来对称地调节线圈。 线圈由四态混合电路正交驱动。 电磁能的大部分被存储在线圈负载区域之外的谐振元件中，以减少由于测试对象的特性引起的线圈操作的扰动。