公开(公告)号：EP3221867A1

公开(公告)日：2017-09-27

申请号：EP15861488.3

申请日：2015-11-20

申请人： The Medical College of Wisconsin, Inc.

发明人： METT, Richard Raymond ,  HYDE, James Stuart ,  SIDABRAS, Jason Walter

IPC分类号： H01B5/04 ,  H01F27/34

CPC分类号： G01R33/341 ,  G01R33/3628

摘要： High Q-value radio frequency (RF] coils are described. In general, the RF coils include multiple conductor layers that at least partially overlap to define a capacitive region that equalizes current flowing in each conductor. In some instances, the RF coil includes sets of layered conductors, where each set of layered conductors overlaps in an overlap region. In some other instances, the RF coil includes a spiraled conductor coupled to a dielectric material, where the number of turns of the spiral defines the overlap area. Multiple spiraled conductors can be interleaved. An equalization coil can also be provided to equalize currents along an axial dimension of each conductor in such RF coils. The thickness of the conductors is less than three skin depths, and preferably less than one skin depth, to overcome skin-depth limitations.

摘要翻译： 通常，RF线圈包括多个导体层，所述多个导体层至少部分地重叠以限定均衡每个导体中流动的电流的电容性区域。在一些情况下，RF线圈包括多组 在一些其他情况下，RF线圈包括耦合到介电材料的螺旋导体，其中螺旋的圈数限定重叠区域，多个螺旋导体 还可以提供均衡线圈以均衡沿这些RF线圈中的每个导体的轴向尺寸的电流，导体的厚度小于三个趋肤深度，并且优选地小于一个趋肤深度，以克服皮肤 - 深度限制。