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    Head coil arrays for parallel imaging in magnetic resonance imaging
    3.
    发明授权
    Head coil arrays for parallel imaging in magnetic resonance imaging 有权
    用于磁共振成像中的并行成像的头部线圈阵列

    公开(公告)号：US06930480B1

    公开(公告)日：2005-08-16

    申请号：US10187353

    申请日：2002-06-28

    申请人： Hiroyuki Fujita ,  Labros S. Petropoulos ,  Mark Xueming Zou ,  Pei H. Chan ,  Dashen Chu ,  Joseph Murphy-Boesch

    发明人： Hiroyuki Fujita ,  Labros S. Petropoulos ,  Mark Xueming Zou ,  Pei H. Chan ,  Dashen Chu ,  Joseph Murphy-Boesch

    IPC分类号： G01R33/34 ,  G01R33/561 ,  G01V3/00

    CPC分类号： G01R33/34046 ,  G01R33/5611

    摘要： A partially parallel acquisition RF coil array for imaging a human head includes at least a first, a second and a third loop coil adapted to be arranged circumambiently about the lower portion of the head; and at least a forth, a fifth and a sixth coil adapted to be conformably arranged about the summit of the head. A partially parallel acquisition RF coil array for imaging a human head includes at least a first, a second, a third and a fourth loop coil adapted to be arranged circumambiently about the lower portion of the head; and at least a first and a second Figure-8 or saddle coil adapted to be conformably arranged about the summit of the head.

    摘要翻译： 用于对人头进行成像的部分并行采集RF线圈阵列包括至少第一，第二和第三环形线圈，其适于围绕头部的下部周边布置; 以及适于围绕头部的顶点顺应地布置的至少一个第四，第五和第六线圈。 用于对人头进行成像的部分并行采集RF线圈阵列包括至少第一，第二，第三和第四环形线圈，其适于围绕头部的下部周边布置; 以及至少第一和第二图8或鞍形线圈，其适于围绕头部的顶点顺应地布置。

    Super shielding of finite length structures in open magnetic and electric systems
    4.
    发明授权
    Super shielding of finite length structures in open magnetic and electric systems 失效
    开放式磁力和电气系统中有限长度结构的超级屏蔽

    公开(公告)号：US06236203B1

    公开(公告)日：2001-05-22

    申请号：US09162005

    申请日：1998-09-28

    申请人： Shmaryu M. Shvartsman ,  Robert W. Brown ,  Hiroyuki Fujita ,  Michael A. Morich ,  Labros S. Petropoulos

    发明人： Shmaryu M. Shvartsman ,  Robert W. Brown ,  Hiroyuki Fujita ,  Michael A. Morich ,  Labros S. Petropoulos

    IPC分类号： G01R3320

    CPC分类号： G01R33/4215

    摘要： Methods of designing an active shield for substantially zeroing an electro-magnetic field on one side of a predetermined boundary in open magnetic resonance imaging systems and in open electric systems are provided. The methods include defining a finite length geometry for a primary structure which, in the case of zeroing a magnetic field, carries a first current distribution on its surface. A finite length geometry is also defined for a secondary structure which, in the case of zeroing a magnetic field, carries a second current distribution on its surface. In the case of zeroing an electric field, the current distributions are replaced with charge distributions. A total magnetic or electric field resulting from a combination of the first and second current or charge distributions respectively is constrained such that normal components (in the magnetic field case) or tangential components (in the electric field case) thereof substantially vanish at the surface of one of the primary and secondary structures. The first current or charge distribution is constrained to the surface of the primary structure, and the second current or charge distribution is constrained to the surface of the secondary structure. The first and second current or charge distributions are then calculated concurrently allowing both the first and second current or charge distributions to vary while observing the constraints such that a predetermined magnetic or electric field is achieved in a first region and a magnetic or electric field on one side of a predetermined boundary is substantially zeroed.

    摘要翻译： 提供了在开放式磁共振成像系统和开放式电气系统中设计用于使预定边界的一侧上的电磁场基本归零的有源屏蔽的方法。 这些方法包括为初级结构定义有限长几何形状，在使磁场归零的情况下，其在其表面上承载第一电流分布。 还对二次结构定义了有限长几何形状，在二次结构的归零的情况下，在其表面上承载第二电流分布。 在电场归零的情况下，电流分布被电荷分布替代。 分别由第一和第二电流或电荷分布的组合产生的总磁场或电场被约束，使得正常分量（在磁场情况下）或切向分量（在电场情况下）基本上消失在 主要和次要结构之一。 第一电流或电荷分布被约束到初级结构的表面，并且第二电流或电荷分布被约束到二级结构的表面。 然后同时计算第一和第二电流或电荷分布，同时允许第一和第二电流或电荷分布同时观察约束，使得在第一区域中实现预定的磁场或电场，并且在一个区域上实现磁场或电场 预定边界的一侧基本为零。

    Technique for designing distributed radio frequency coils and distributed radio frequency coils designed thereby
    5.
    发明授权
    Technique for designing distributed radio frequency coils and distributed radio frequency coils designed thereby 失效
    用于设计分布式射频线圈和由此设计的分布式射频线圈的技术

    公开(公告)号：US5689189A

    公开(公告)日：1997-11-18

    申请号：US638203

    申请日：1996-04-26

    申请人： Michael A. Morich ,  Labros S. Petropoulos ,  Hiroyuki Fujita ,  Shmaryu Shvartsman ,  Robert W. Brown

    发明人： Michael A. Morich ,  Labros S. Petropoulos ,  Hiroyuki Fujita ,  Shmaryu Shvartsman ,  Robert W. Brown

    IPC分类号： A61B5/055 ,  G01R33/34 ,  G01V3/00

    CPC分类号： G01R33/341

    摘要： A localized coil (30) is disposed in the temporally constant magnetic field of a magnetic resonance imaging system. The localized coil is designed in five steps: a static problem formulation step, a static current solution step, a discretization step, a current loop connection step, and a high frequency solution step. One radio frequency coil designed by this process to be carried on a circularly cylindrical former includes two coil sections (60, 62) disposed on opposite sides of the dielectric former. Each of the two coil sections includes a pair of inner loops (64.sub.1, 64.sub.2) disposed symmetrically relative to a z=0 plane of symmetry and a second pair of loops (68.sub.1, 68.sub.2) also disposed symmetrically about the plane of symmetry. To raise self-resonance frequency, the inner and outer loops are connected in parallel. The resonance frequency is fine-tuned with reactive elements (66.sub.1, 66.sub.2). To ensure balanced current flow between the two coil portions, the two portions are connected (78) in parallel.

    摘要翻译： 局部线圈（30）设置在磁共振成像系统的时间上恒定的磁场中。 局部线圈设计有五个步骤：静态问题制定步骤，静态电流解决步骤，离散化步骤，电流环路连接步骤和高频解决步骤。 通过该工艺设计的一个射频线圈被承载在圆柱形成形器上，包括设置在电介体的相对侧上的两个线圈部分（60,62）。 两个线圈段中的每一个包括一对相对于z = 0对称平面对称设置的内环（641,642），以及也围绕对称平面对称设置的第二对环（681,682）。 为了提高自谐振频率，内环和外环并联。 谐振频率与无功元件（661,662）进行微调。 为了确保两个线圈部分之间的平衡电流流动，两个部分平行连接（78）。

    Coil arrays for parallel imaging in magnetic resonance imaging
    6.
    发明授权
    Coil arrays for parallel imaging in magnetic resonance imaging 有权
    用于磁共振成像中的并行成像的线圈阵列

    公开(公告)号：US07221161B2

    公开(公告)日：2007-05-22

    申请号：US10761854

    申请日：2004-01-21

    申请人： Hiroyuki Fujita ,  Mark Xueming Zou ,  Dan K. Spence

    发明人： Hiroyuki Fujita ,  Mark Xueming Zou ,  Dan K. Spence

    IPC分类号： G01V3/00

    CPC分类号： G01R33/3415

    摘要： A system and method for configuring coils in a coil array are provided. The system includes a coil arrangement for a medical imaging system. The coil arrangement includes a plurality of coil elements for a medical imaging system and a plurality of twisted portions in combination with at least one of the plurality of coil elements.

    摘要翻译： 提供一种用于配置线圈阵列中的线圈的系统和方法。 该系统包括用于医疗成像系统的线圈装置。 线圈装置包括用于医学成像系统的多个线圈元件和与多个线圈元件中的至少一个组合的多个扭转部分。

    MRI coil system for breast imaging
    7.
    发明授权
    MRI coil system for breast imaging 失效
    用于乳腺成像的MRI线圈系统

    公开(公告)号：US06850065B1

    公开(公告)日：2005-02-01

    申请号：US10205794

    申请日：2002-07-26

    申请人： Hiroyuki Fujita ,  Mark Xueming Zou

    发明人： Hiroyuki Fujita ,  Mark Xueming Zou

    IPC分类号： G01R33/341 ,  G01V3/00

    CPC分类号： G01R33/3678

    摘要： A RF receive coil system for imaging a breast on a human chest with a horizontal field MRI system includes a volume saddle coil adapted to be contoured about the chest; and a Helmholtz coil having a lower portion adapted to be contoured about the chest and an upper portion adapted to be above the chest The coils are operable in quadrature mode.

    摘要翻译： 用于使用水平场MRI系统对人胸部的乳房进行成像的RF接收线圈系统包括适于围绕胸部轮廓的体积鞍座线圈; 以及亥姆霍兹线圈，其具有适于围绕胸部轮廓的下部和适于在胸部上方的上部。线圈可以正交模式操作。

    Wireless communication apparatus having wireless communication functions conforming to incompatible communication standards
    9.
    发明授权
    Wireless communication apparatus having wireless communication functions conforming to incompatible communication standards 失效
    具有符合不兼容通信标准的无线通信功能的无线通信装置

    公开(公告)号：US08005504B2

    公开(公告)日：2011-08-23

    申请号：US11560170

    申请日：2006-11-15

    申请人： Eiichi Sano ,  Hiroyuki Fujita

    发明人： Eiichi Sano ,  Hiroyuki Fujita

    IPC分类号： H04M1/00

    CPC分类号： H04W52/42 ,  H04B7/0602 ,  H04B7/0805 ,  H04B7/0825 ,  H04M2250/02 ,  H04M2250/06

    摘要： A wireless communication apparatus is provided. The wireless communication apparatus includes wireless communication functions conforming to incompatible first and second communication standards. The wireless communication apparatus includes a first transceiver that performs a wireless communication operation conforming to the first communication standard and includes a first transmission/reception port, a second transceiver that performs a wireless communication operation conforming to the second communication standard and includes a second transmission/reception port, a shared antenna shared by the first and the second transceivers, an antenna connecting unit that connects the shared antenna and the first and the second transmission/reception ports, and a control unit that controls the communication operations in the first and the second transceivers.

    摘要翻译： 提供一种无线通信装置。 无线通信装置包括符合不兼容的第一和第二通信标准的无线通信功能。 无线通信装置包括执行符合第一通信标准的无线通信操作的第一收发器，并且包括第一发送/接收端口，执行符合第二通信标准的无线通信操作的第二收发器，并且包括第二发送/ 接收端口，由第一和第二收发器共享的共享天线，连接共享天线与第一和第二发送/接收端口的天线连接单元，以及控制单元，其控制第一和第二收发器中的通信操作 收发器