公开(公告)号：US4797617A

公开(公告)日：1989-01-10

申请号：US933152

申请日：1986-11-21

申请人： George J. Misic ,  Aarne Lillo ,  John L. Patrick ,  G. Neil Holland

发明人： George J. Misic ,  Aarne Lillo ,  John L. Patrick ,  G. Neil Holland

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/20

CPC分类号： G01R33/34046 ,  G01R33/34007 ,  G01R33/3628 ,  G01R33/3657

摘要： A nuclear magnetic resonance radio frequency coil. The disclosed coil provides high frequency resonance signals for perturbing a magnetic field within the coil. The coil is impedance matched and tuned with adjustable capacitors. A balanced configuration is achieved with a co-axial cable chosen to phase shift an energization signal coupled to the coil. The preferred coil is a thin metallic foil having a shorting conductor, four wing conductors, and uniquely shaped parallel cross conductors connecting the shorting and wing conductors. When mounted to an rf transmissive plastic substrate and energized the coil produces a homogenous field within a region of interest the size of a patient head. A semicircular balanced feedbar arrangement is used to minimize undesired field contributions.

摘要翻译： 核磁共振射频线圈。 所公开的线圈提供用于扰乱线圈内的磁场的高频谐振信号。 线圈阻抗匹配并用可调电容器调谐。 使用同轴电缆实现平衡配置，以使相耦合到线圈的通电信号相移。 优选的线圈是具有短路导体，四个机翼导体和连接短路和翼导体的独特成形的平行十字导体的薄金属箔。 当安装到rf透射塑料基板并通电时，线圈在患者头部的尺寸的感兴趣区域内产生均匀的场。 使用半圆平衡馈线布置来最小化不期望的场贡献。

公开(公告)号：US4634980A

公开(公告)日：1987-01-06

申请号：US641570

申请日：1984-08-16

申请人： George J. Misic ,  Aarne Lillo ,  John L. Patrick ,  G. Neil Holland

发明人： George J. Misic ,  Aarne Lillo ,  John L. Patrick ,  G. Neil Holland

IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36 ,  H01Q7/02 ,  G01R33/20

CPC分类号： G01R33/34007 ,  G01R33/34046 ,  G01R33/3628 ,  G01R33/3657

摘要： A nuclear magnetic resonance radio frequency coil. The disclosed coil provides high frequency resonance signals for perturbing a magnetic field within the coil. The coil is impedance matched and tuned with adjustable capacitors. A balanced configuration is achieved with a co-axial cable chosen to phase shift an energization signal coupled to the coil. The preferred coil is a thin metallic foil having a shorting conductor, four wing conductors, and uniquely shaped parallel cross conductors connecting the shorting and wing conductors. When mounted to a rf transmissive plastic substrate and energized the coil produces a homogeneous field within a region of interest the size of a patient head. A semicircular balanced feedbar arrangement is used to minimize undesired field contributions.

摘要翻译： 核磁共振射频线圈。 所公开的线圈提供用于扰乱线圈内的磁场的高频谐振信号。 线圈阻抗匹配并用可调电容器调谐。 使用同轴电缆实现平衡配置，以使相耦合到线圈的通电信号相移。 优选的线圈是具有短路导体，四个机翼导体和连接短路和翼导体的独特成形的平行十字导体的薄金属箔。 当安装到rf透射塑料基板并通电时，线圈在患者头部的尺寸的感兴趣区域内产生均匀的场。 使用半圆平衡馈线布置来最小化不期望的场贡献。