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1. 发明授权

US08890529B2 System and apparatus for providing interconnections in a gradient coil assembly 有权
标题翻译：用于在梯度线圈组件中提供互连的系统和装置
公开(公告)号：US08890529B2
公开(公告)日：2014-11-18
申请号：US13157596
申请日：2011-06-10
申请人： Longzhi Jiang , Timothy J. Havens , John Scaturro, Jr. , William L. Einziger , Tesfaye K. Kidane
发明人： Longzhi Jiang , Timothy J. Havens , John Scaturro, Jr. , William L. Einziger , Tesfaye K. Kidane
IPC分类号： G01R33/385 , G01R33/421
CPC分类号： G01R33/385 , G01R33/3858 , G01R33/4215
摘要： A gradient coil apparatus for a magnetic resonance imaging (MRI) system includes an inner gradient coil assembly comprising at least one inner gradient coil and an outer gradient coil assembly comprising at least one outer gradient coil. At least one gradient coil interconnect is coupled to the inner gradient coil and the outer gradient coil. The gradient coil interconnect includes a wire assembly comprising a plurality of conductors. The wire assembly has a first end electrically coupled to the outer gradient coil assembly and a second end electrically coupled to the inner gradient coil. The gradient coil interconnect also includes a reinforcement material disposed around a portion of the wire assembly.
摘要翻译：用于磁共振成像（MRI）系统的梯度线圈装置包括内梯度线圈组件，其包括至少一个内梯度线圈和包括至少一个外梯度线圈的外梯度线圈组件。至少一个梯度线圈互连件耦合到内部梯度线圈和外部梯度线圈。梯度线圈互连包括包括多个导体的线组件。线组件具有电耦合到外梯度线圈组件的第一端和电耦合到内梯度线圈的第二端。梯度线圈互连件还包括围绕线组件的一部分设置的增强材料。

2. 发明申请

US20120306495A1 SYSTEM AND APPARATUS FOR PROVIDING INTERCONNECTIONS IN A GRADIENT COIL ASSEMBLY 有权
标题翻译：用于在梯形线圈组件中提供互连的系统和装置
公开(公告)号：US20120306495A1
公开(公告)日：2012-12-06
申请号：US13157596
申请日：2011-06-10
申请人： Longzhi Jiang , Timothy J. Havens , John Scaturro, JR. , William L. Einziger , Tesfaye K. Kidane
发明人： Longzhi Jiang , Timothy J. Havens , John Scaturro, JR. , William L. Einziger , Tesfaye K. Kidane
IPC分类号： G01R33/44
CPC分类号： G01R33/385 , G01R33/3858 , G01R33/4215
摘要： A gradient coil apparatus for a magnetic resonance imaging (MRI) system includes an inner gradient coil assembly comprising at least one inner gradient coil and an outer gradient coil assembly comprising at least one outer gradient coil. At least one gradient coil interconnect is coupled to the inner gradient coil and the outer gradient coil. The gradient coil interconnect includes a wire assembly comprising a plurality of conductors. The wire assembly has a first end electrically coupled to the outer gradient coil assembly and a second end electrically coupled to the inner gradient coil. The gradient coil interconnect also includes a reinforcement material disposed around a portion of the wire assembly.
摘要翻译：用于磁共振成像（MRI）系统的梯度线圈装置包括内梯度线圈组件，其包括至少一个内梯度线圈和包括至少一个外梯度线圈的外梯度线圈组件。至少一个梯度线圈互连件耦合到内部梯度线圈和外部梯度线圈。梯度线圈互连包括包括多个导体的线组件。线组件具有电耦合到外梯度线圈组件的第一端和电耦合到内梯度线圈的第二端。梯度线圈互连件还包括围绕线组件的一部分设置的增强材料。

3. 发明申请

US20130002252A1 SYSTEM AND APPARATUS FOR BALANCING RADIAL FORCES IN A GRADIENT COIL 有权
标题翻译：用于平衡线圈中的径向力的系统和装置
公开(公告)号：US20130002252A1
公开(公告)日：2013-01-03
申请号：US13183647
申请日：2011-07-15
申请人： Tesfaye K. Kidane , Timothy J. Havens , Longzhi Jiang
发明人： Tesfaye K. Kidane , Timothy J. Havens , Longzhi Jiang
IPC分类号： G01R33/44
CPC分类号： G01R33/3854
摘要： A gradient coil apparatus for a magnetic resonance imaging (MRI) system includes an inner gradient coil assembly and an outer gradient coil assembly disposed around the inner gradient coil assembly. The outer gradient coil assembly has an outer surface, a first end and a second end. The gradient coil apparatus also includes a force balancing apparatus disposed around the outer surface of the outer gradient coil assembly. In one embodiment, the force balancing apparatus includes an active force balancing coil disposed around the outer surface of the outer gradient coil assembly. In another embodiment, the force balancing apparatus includes a first passive conducting strip disposed around the first end of the outer gradient coil assembly and a second passive conducting strip disposed around the second end of the outer gradient coil assembly.
摘要翻译：用于磁共振成像（MRI）系统的梯度线圈装置包括内梯度线圈组件和设置在内梯度线圈组件周围的外梯度线圈组件。外梯度线圈组件具有外表面，第一端和第二端。梯度线圈装置还包括围绕外梯度线圈组件的外表面设置的力平衡装置。在一个实施例中，力平衡装置包括设置在外梯度线圈组件的外表面周围的主动力平衡线圈。在另一个实施例中，力平衡装置包括围绕外部梯度线圈组件的第一端设置的第一无源导电带和围绕外部梯度线圈组件的第二端设置的第二无源导电条。

4. 发明授权

US08766635B2 System and apparatus for balancing radial forces in a gradient coil 有权
标题翻译：用于平衡梯度线圈中的径向力的系统和装置
公开(公告)号：US08766635B2
公开(公告)日：2014-07-01
申请号：US13183647
申请日：2011-07-15
申请人： Tesfaye K. Kidane , Timothy J. Havens , Longzhi Jiang
发明人： Tesfaye K. Kidane , Timothy J. Havens , Longzhi Jiang
IPC分类号： G01V3/00 , G01R33/385
CPC分类号： G01R33/3854
摘要： A gradient coil apparatus for a magnetic resonance imaging (MRI) system includes an inner gradient coil assembly and an outer gradient coil assembly disposed around the inner gradient coil assembly. The outer gradient coil assembly has an outer surface, a first end and a second end. The gradient coil apparatus also includes a force balancing apparatus disposed around the outer surface of the outer gradient coil assembly. In one embodiment, the force balancing apparatus includes an active force balancing coil disposed around the outer surface of the outer gradient coil assembly. In another embodiment, the force balancing apparatus includes a first passive conducting strip disposed around the first end of the outer gradient coil assembly and a second passive conducting strip disposed around the second end of the outer gradient coil assembly.
摘要翻译：用于磁共振成像（MRI）系统的梯度线圈装置包括内梯度线圈组件和设置在内梯度线圈组件周围的外梯度线圈组件。外梯度线圈组件具有外表面，第一端和第二端。梯度线圈装置还包括围绕外梯度线圈组件的外表面设置的力平衡装置。在一个实施例中，力平衡装置包括设置在外梯度线圈组件的外表面周围的主动力平衡线圈。在另一个实施例中，力平衡装置包括围绕外部梯度线圈组件的第一端设置的第一无源导电带和围绕外部梯度线圈组件的第二端设置的第二无源导电条。

5. 发明授权

US07141974B2 Active-passive electromagnetic shielding to reduce MRI acoustic noise 有权
标题翻译：主动被动电磁屏蔽减少MRI声学噪声
公开(公告)号：US07141974B2
公开(公告)日：2006-11-28
申请号：US10925691
申请日：2004-08-25
申请人： William A Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
发明人： William A Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
IPC分类号： G01V3/00
CPC分类号： G01R33/3854 , G01R33/4215
摘要： The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat. The actively shielded gradient winding can also be extended to portions at the ends of the actively shielded gradient winding and further to portions inside the inner radius of the inner portion of the actively shielded gradient winding. The actively shielded gradient windings and passive shielding should be designed concurrently in order to substantially optimize the gradient linearity and reduce the eddy currents generated in metallic parts of the magnetic resonance imaging system.
摘要翻译：本发明提供了一种用于降低磁共振成像装置中的声学噪声的装置，其包括位于主动屏蔽梯度绕组元件外部的无源屏蔽，以便减小在不需要的方向上扩展到梯度线圈组件外部的场的幅度并与磁体相互作用低温恒温器或其他金属磁体部件，引起导致声音噪声的涡流。无源屏蔽元件是位于圆柱形磁体系统中的圆柱形梯度线圈组件的外半径上的导电层，位于梯形线圈组件的端部的导电层位于圆柱形磁体系统中，导电层位于主动屏蔽梯度内在圆柱形磁体系中缠绕内部元件。被动屏蔽也可以位于与磁体低温恒温器振动隔离的分离结构上。主动屏蔽的梯度绕组还可以延伸到主动屏蔽的梯度绕组的端部的部分，并且还可以延伸到主动屏蔽的梯度绕组的内部的内半径内的部分。主动屏蔽梯度绕组和无源屏蔽应同时设计，以便基本上优化梯度线性并减少在磁共振成像系统的金属部分中产生的涡流。

6. 发明授权

US07375526B2 Active-passive electromagnetic shielding to reduce MRI acoustic noise 失效
标题翻译：主动被动电磁屏蔽减少MRI声学噪声
公开(公告)号：US07375526B2
公开(公告)日：2008-05-20
申请号：US11551413
申请日：2006-10-20
申请人： William A. Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
发明人： William A. Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
IPC分类号： G01V3/00
CPC分类号： G01R33/3854 , G01R33/4215
摘要： The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat. The actively shielded gradient winding can also be extended to portions at the ends of the actively shielded gradient winding and further to portions inside the inner radius of the inner portion of the actively shielded gradient winding. The actively shielded gradient windings and passive shielding should be designed concurrently in order to substantially optimize the gradient linearity and reduce the eddy currents generated in metallic parts of the magnetic resonance imaging system.
摘要翻译：本发明提供了一种用于降低磁共振成像装置中的声学噪声的装置，其包括位于主动屏蔽的梯度绕组元件外部的无源屏蔽，以便减少在不需要的方向上扩展到梯度线圈组件外部的场的大小并与磁体相互作用低温恒温器或其他金属磁体部件，引起导致声音噪声的涡流。无源屏蔽元件是位于圆柱形磁体系统中的圆柱形梯度线圈组件的外半径上的导电层，位于梯形线圈组件的端部的导电层位于圆柱形磁体系统中，导电层位于主动屏蔽梯度内在圆柱形磁体系中缠绕内部元件。被动屏蔽也可以位于与磁体低温恒温器振动隔离的分离结构上。主动屏蔽的梯度绕组还可以延伸到主动屏蔽的梯度绕组的端部的部分，并且还可以延伸到主动屏蔽的梯度绕组的内部的内半径内的部分。主动屏蔽梯度绕组和无源屏蔽应同时设计，以便基本上优化梯度线性并减少在磁共振成像系统的金属部分中产生的涡流。

7. 发明申请

US20080094062A1 ACTIVE-PASSIVE ELECTROMAGNETIC SHIELDING TO REDUCE MRI ACOUSTIC NOISE 失效
标题翻译：主动被动电磁屏蔽减少MRI声音噪声
公开(公告)号：US20080094062A1
公开(公告)日：2008-04-24
申请号：US11551413
申请日：2006-10-20
申请人： William A. Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
发明人： William A. Edelstein , Tesfaye K. Kidane , Victor Taracilla , Tanvir N. Baig , Timothy P. Eagan , Robert W. Brown
IPC分类号： G01V3/00
CPC分类号： G01R33/3854 , G01R33/4215
摘要： The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat. The actively shielded gradient winding can also be extended to portions at the ends of the actively shielded gradient winding and further to portions inside the inner radius of the inner portion of the actively shielded gradient winding. The actively shielded gradient windings and passive shielding should be designed concurrently in order to substantially optimize the gradient linearity and reduce the eddy currents generated in metallic parts of the magnetic resonance imaging system.
摘要翻译：本发明提供了一种用于降低磁共振成像装置中的声学噪声的装置，其包括位于主动屏蔽梯度绕组元件外部的无源屏蔽，以便减小在不需要的方向上扩展到梯度线圈组件外部的场的幅度并与磁体相互作用低温恒温器或其他金属磁体部件，引起导致声音噪声的涡流。无源屏蔽元件是位于圆柱形磁体系统中的圆柱形梯度线圈组件的外半径上的导电层，导电层位于梯形线圈组件的圆柱形磁体系统的端部，导电层位于主动屏蔽梯度内在圆柱形磁体系中缠绕内部元件。被动屏蔽也可以位于与磁体低温恒温器振动隔离的分离结构上。主动屏蔽的梯度绕组还可以延伸到主动屏蔽的梯度绕组的端部的部分，并且还可以延伸到主动屏蔽的梯度绕组的内部的内半径内的部分。主动屏蔽梯度绕组和无源屏蔽应同时设计，以便基本上优化梯度线性并减少在磁共振成像系统的金属部分中产生的涡流。

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