公开(公告)号：US09041399B2

公开(公告)日：2015-05-26

申请号：US13593546

申请日：2012-08-24

申请人： Timothy James Hollis ,  Fengshun Tan

发明人： Timothy James Hollis ,  Fengshun Tan

IPC分类号： G01R33/341 ,  G01R33/385 ,  H01F6/06 ,  G01R33/421

CPC分类号： G01R33/385 ,  G01R33/3854 ,  G01R33/4215 ,  H01F6/06

摘要： A gradient coil is provided. The gradient coil comprises: a first layer comprised of a first plurality of turns of wires; and a second layer of coil comprised of a second plurality of turns of wires. Each turn of wire in the first and second plurality of turns of wires circles along the side walls of a cylindrical substrate and each turn of wire in the first and second plurality of turns of wires include a first portion wound along the inner side wall of the substrate and a second portion wound along the outer side wall of the substrate.

摘要翻译： 提供梯度线圈。 梯度线圈包括：第一层，由第一多圈线组成; 以及由第二多圈线组成的第二层线圈。 第一和第二多圈线中的线的每一圈都沿着圆柱形基板的侧壁圆周，并且第一和第二多圈线中的每根线都包括沿着第一和第二多个线的内侧壁缠绕的第一部分 衬底和沿衬底的外侧壁缠绕的第二部分。

公开(公告)号：US20150072864A1

公开(公告)日：2015-03-12

申请号：US14531140

申请日：2014-11-03

申请人： Anbo Wu ,  Minfeng Xu ,  Timothy James Hollis ,  Ye Bai ,  Weijun Shen ,  Evangelos Trifon Laskaris ,  Jian-She Wang ,  Yan Zhao

发明人： Anbo Wu ,  Minfeng Xu ,  Timothy James Hollis ,  Ye Bai ,  Weijun Shen ,  Evangelos Trifon Laskaris ,  Jian-She Wang ,  Yan Zhao

IPC分类号： H01F6/06

CPC分类号： H01F6/06 ,  G01R33/288 ,  G01R33/3815 ,  H01F6/04

摘要： A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.

摘要翻译： 超导磁体系统包括线圈支撑结构，超导线圈以及导电和导热绕组。 超导线圈和导电绕组由线圈支撑结构支撑。 每个导电绕组与相应的超导线圈电磁耦合。 每个导电绕组电气短路。

公开(公告)号：US08698497B2

公开(公告)日：2014-04-15

申请号：US12889053

申请日：2010-09-23

申请人： Timothy James Hollis ,  Chris Cirel

发明人： Timothy James Hollis ,  Chris Cirel

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3858

摘要： A coil assembly for a Magnetic Resonance Imaging (MRI) system includes a primary gradient coil, and a corrector coil, at least a portion of the corrector coil being interwoven with a portion of the primary gradient coil such that the portion of the primary gradient coil is concentric with the portion of the corrector coil. An MRI imaging system and a method of fabricating the coil assembly are also provided.

摘要翻译： 用于磁共振成像（MRI）系统的线圈组件包括初级梯度线圈和校正线圈，校正线圈的至少一部分与主梯度线圈的一部分交织，使得主梯度线圈的部分 与校正线圈的部分同心。 还提供了MRI成像系统和制造线圈组件的方法。

公开(公告)号：US08729894B2

公开(公告)日：2014-05-20

申请号：US12847846

申请日：2010-07-30

申请人： Timothy James Hollis ,  Yuri Lvovsky

发明人： Timothy James Hollis ,  Yuri Lvovsky

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  H01F6/02

摘要： Systems and methods for operating a magnetic resonance imaging (MRI) during ramping are provided. One method includes reducing pressure in a cryogen vessel of an MRI system during magnet ramping. The method also includes returning pressure in the cryogen vessel to a normal operating pressure level after magnet ramping is complete.

摘要翻译： 提供了在斜坡期间操作磁共振成像（MRI）的系统和方法。 一种方法包括在磁体斜坡期间降低MRI系统的冷冻剂容器中的压力。 该方法还包括在磁体斜坡完成之后将冷冻剂容器中的压力返回至正常工作压力水平。

公开(公告)号：US20130049755A1

公开(公告)日：2013-02-28

申请号：US13593546

申请日：2012-08-24

申请人： Timothy James HOLLIS ,  Fengshun Tan

发明人： Timothy James HOLLIS ,  Fengshun Tan

IPC分类号： G01R33/341

CPC分类号： G01R33/385 ,  G01R33/3854 ,  G01R33/4215 ,  H01F6/06

摘要： A gradient coil is provided. The gradient coil comprises: a first layer comprised of a first plurality of turns of wires; and a second layer of coil comprised of a second plurality of turns of wires. Each turn of wire in the first and second plurality of turns of wires circles along the side walls of a cylindrical substrate and each turn of wire in the first and second plurality of turns of wires include a first portion wound along the inner side wall of the substrate and a second portion wound along the outer side wall of the substrate.

摘要翻译： 提供梯度线圈。 梯度线圈包括：第一层，由第一多圈线组成; 以及由第二多圈线组成的第二层线圈。 第一和第二多圈线中的线的每一圈都沿着圆柱形基板的侧壁圆周，并且第一和第二多圈线中的每根线都包括沿着第一和第二多个线的内侧壁缠绕的第一部分 衬底和沿衬底的外侧壁缠绕的第二部分。

公开(公告)号：US20120153952A1

公开(公告)日：2012-06-21

申请号：US12970706

申请日：2010-12-16

申请人： Silke Maria Lechner ,  Timothy James Hollis ,  Bruce Courtney Campbell Amm

发明人： Silke Maria Lechner ,  Timothy James Hollis ,  Bruce Courtney Campbell Amm

IPC分类号： G01R33/44

CPC分类号： G01R33/56572 ,  G01R33/56518

摘要： Methods, systems and computer program products are described for providing gradient linearity correction in a magnetic resonance image. The method in one example obtains, using a simulation, a time-dependent eddy current induced magnetic gradient field produced by a gradient system in response to a gradient switching pulse. Subsequently, the method determines time-dependent eddy current harmonic response coefficients for at least one higher harmonic frequency based upon the time-dependent eddy current induced magnetic gradient field. The method then corrects the magnetic resonance image based upon the time-dependent eddy current harmonic response coefficients.

摘要翻译： 描述了用于在磁共振图像中提供梯度线性校正的方法，系统和计算机程序产品。 一个示例中的方法使用模拟来获得由梯度系统响应于梯度切换脉冲产生的时间依赖的涡流感应磁梯度场。 随后，该方法基于时间依赖的涡流感应磁梯度场确定至少一个较高谐波频率的时间依赖涡流谐波响应系数。 该方法然后基于时间依赖的涡流谐波响应系数校正磁共振图像。

公开(公告)号：US20120028805A1

公开(公告)日：2012-02-02

申请号：US12847846

申请日：2010-07-30

申请人： Timothy James Hollis ,  Yuri Lvovsky

发明人： Timothy James Hollis ,  Yuri Lvovsky

IPC分类号： G01R33/035 ,  G01R33/44

CPC分类号： G01R33/3815 ,  H01F6/02

摘要： Systems and methods for operating a magnetic resonance imaging (MRI) during ramping are provided. One method includes reducing pressure in a cryogen vessel of an MRI system during magnet ramping. The method also includes returning pressure in the cryogen vessel to a normal operating pressure level after magnet ramping is complete.

摘要翻译： 提供了在斜坡期间操作磁共振成像（MRI）的系统和方法。 一种方法包括在磁体斜坡期间降低MRI系统的冷冻剂容器中的压力。 该方法还包括在磁体斜坡完成之后将冷冻剂容器中的压力返回至正常工作压力水平。

公开(公告)号：US07579838B2

公开(公告)日：2009-08-25

申请号：US11283132

申请日：2005-11-18

申请人： Timothy James Hollis

发明人： Timothy James Hollis

IPC分类号： G01V3/00

CPC分类号： G01R33/381 ,  G01R33/3875

摘要： Systems, methods and apparatus are provided through which a partially elongated field-of-view in a magnetic resonance imaging system is generated either by an asymmetric primary coil or a conventional symmetrical primary coil with a supplementary high odd-order shim that elongates the field-of-view towards one end of the bore. For significantly increased efficiency, the high odd-order shim can evoke specific parts of the primary coil by injecting additional current and/or subtracting current from specific turns, as required.

摘要翻译： 提供了一种系统，方法和装置，通过该系统，方法和装置，通过非对称初级线圈或具有补充高奇数级垫片的常规对称初级线圈产生磁共振成像系统中的部分细长视场， 朝向钻孔的一端。 为了显着提高效率，高奇数垫片可以根据需要通过从特定匝数注入额外的电流和/或减去电流来唤起初级线圈的特定部分。

公开(公告)号：US08914086B2

公开(公告)日：2014-12-16

申请号：US13559256

申请日：2012-07-26

申请人： Anbo Wu ,  Minfeng Xu ,  Timothy James Hollis ,  Ye Bai ,  Weijun Shen ,  Evangelos Trifon Laskaris ,  Jian-She Wang ,  Yan Zhao

发明人： Anbo Wu ,  Minfeng Xu ,  Timothy James Hollis ,  Ye Bai ,  Weijun Shen ,  Evangelos Trifon Laskaris ,  Jian-She Wang ,  Yan Zhao

IPC分类号： H01B12/00 ,  H01F6/00 ,  H01L39/00 ,  G01R33/3815 ,  H01F6/06 ,  H01F6/04 ,  G01R33/28

CPC分类号： H01F6/06 ,  G01R33/288 ,  G01R33/3815 ,  H01F6/04

摘要： A superconducting magnet system includes a coil support structure, superconducting coils, and electrically and thermally conductive windings. The superconducting coils and the conductive windings are supported by the coil support structure. Each conductive winding is electromagnetically coupled with a corresponding superconducting coil. Each conductive winding is electrically shorted.

摘要翻译： 超导磁体系统包括线圈支撑结构，超导线圈以及导电和导热绕组。 超导线圈和导电绕组由线圈支撑结构支撑。 每个导电绕组与相应的超导线圈电磁耦合。 每个导电绕组电气短路。

公开(公告)号：US20120074942A1

公开(公告)日：2012-03-29

申请号：US12889053

申请日：2010-09-23

申请人： TIMOTHY JAMES HOLLIS ,  CHRIS CIREL

发明人： TIMOTHY JAMES HOLLIS ,  CHRIS CIREL

IPC分类号： G01R33/44

CPC分类号： G01R33/385 ,  G01R33/3858

摘要： A coil assembly for a Magnetic Resonance Imaging (MRI) system includes a primary gradient coil, and a corrector coil, at least a portion of the corrector coil being interwoven with a portion of the primary gradient coil such that the portion of the primary gradient coil is concentric with the portion of the corrector coil. An MRI imaging system and a method of fabricating the coil assembly are also provided.

摘要翻译： 用于磁共振成像（MRI）系统的线圈组件包括初级梯度线圈和校正线圈，校正线圈的至少一部分与主梯度线圈的一部分交织，使得主梯度线圈的部分 与校正线圈的部分同心。 还提供了MRI成像系统和制造线圈组件的方法。