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1. 发明申请

US20110227573A1 MAGNETIC RESONANCE IMAGING SYSTEM WITH SATELLITE GRADIENT COILS 有权
标题翻译：具有卫星梯度线圈的磁共振成像系统
公开(公告)号：US20110227573A1
公开(公告)日：2011-09-22
申请号：US13131296
申请日：2009-12-02
申请人： Jan Konijn , Gerardus Bernardus Jozef Mulder
发明人： Jan Konijn , Gerardus Bernardus Jozef Mulder
IPC分类号： G01R33/44
CPC分类号： G01R33/385 , G01R33/56572
摘要： The present invention relates to a magnetic resonance imaging system comprising a main magnet (102), the main magnet (102) comprising a magnet bore, the bore having a longitudinal axis (118) parallel to the main magnetic field of the main magnet (102), the magnet bore comprising a gradient coil system, wherein the gradient coil system comprises a first (108) satellite coil and an inner coil (114), wherein the first satellite coil comprises at least one pair of saddle coils (200; 202; 204; 206) arranged oppositely over the magnet bore and wherein the inner coil (114) comprises at least two pairs of saddle coils (208) arranged oppositely over the magnet bore, wherein the inner coil (114) is located at a larger diameter from the central axis (118) than the first (108) satellite coil, wherein the first satellite coil and the inner coil form a stepped coil structure.
摘要翻译：磁共振成像系统技术领域本发明涉及一种磁共振成像系统，其包括主磁体（102），所述主磁体（102）包括磁体孔，所述孔具有与所述主磁体（102）的主磁场平行的纵轴（118）），所述磁体孔包括梯度线圈系统，其中所述梯度线圈系统包括第一（108）卫星线圈和内线圈（114），其中所述第一卫星线圈包括至少一对鞍座线圈（200; 202; 所述内部线圈（114）包括相对地布置在所述磁体孔上方的至少两对鞍形线圈（208），其中所述内部线圈（114）位于比所述磁体孔更大的直径处所述中心轴线（118）比所述第一卫星线圈（108）多，其中所述第一卫星线圈和所述内线圈形成阶梯式线圈结构。

2. 发明申请

US20070080689A1 Mri apparatus with means for noise reduction 失效
标题翻译：具有降噪手段的Mri设备
公开(公告)号：US20070080689A1
公开(公告)日：2007-04-12
申请号：US10595921
申请日：2004-11-17
申请人： Jan Konijn , Cornelis Leonardus Ham
发明人： Jan Konijn , Cornelis Leonardus Ham
IPC分类号： G01V3/00
CPC分类号： F16F15/02 , F16F2222/02 , F16F2222/025 , G01R33/3854 , G01R33/3856
摘要： The invention relates to a magnetic resonance imaging (MRI) system comprising a main magnet system for generating a main magnetic field in an examination volume, a gradient coil system (1) which is substantially arranged between the main magnet system and the examination volume and which comprises sub-gradient coils (4,5,6) embedded in a binding material (11) having a glass temperature, control means (13) for controlling a temperature of the gradient coil system, and temperature-influencing means for influencing the temperature of the gradient coil system on the basis of control signals supplied by the control means. The control means are suitable to control, during operation of the MRI system, the temperature of the binding material of the gradient coil system to a value above the glass temperature. The invention further relates to a method of using a magnetic resonance imaging (MRI) system.
摘要翻译：本发明涉及一种磁共振成像（MRI）系统，其包括用于在检查体积中产生主磁场的主磁体系统，基本上布置在主磁体系统和检查体积之间的梯度线圈系统（1）包括嵌入具有玻璃温度的粘合材料（11）中的次级梯度线圈（4,5,6），用于控制梯度线圈系统的温度的控制装置（13）和用于影响梯度线圈系统的温度的温度影响装置该梯度线圈系统基于由控制装置提供的控制信号。控制装置适合于在MRI系统的操作期间将梯度线圈系统的装订材料的温度控制到高于玻璃温度的值。本发明还涉及使用磁共振成像（MRI）系统的方法。

3. 发明授权

US07304477B2 MRI apparatus with means for noise reduction 失效
标题翻译：具有降噪手段的MRI装置
公开(公告)号：US07304477B2
公开(公告)日：2007-12-04
申请号：US10595921
申请日：2004-11-17
申请人： Jan Konijn , Cornelis L. G. Ham
发明人： Jan Konijn , Cornelis L. G. Ham
IPC分类号： G01V3/00
CPC分类号： F16F15/02 , F16F2222/02 , F16F2222/025 , G01R33/3854 , G01R33/3856
摘要： A magnetic resonance imaging (MRI) system includes a main magnet system for generating a main magnetic field in an examination volume. A gradient coil system is arranged between the main magnet system and the examination volume and includes sub-gradient coils embedded in a binding material which has a glass temperature. A controller controls a temperature of the gradient coil system. A temperature-influencing unit influences the temperature of the gradient coil system on the basis of control signals supplied by the control unit. The control unit and the temperature-influencing unit control the temperature of the binding material of the gradient coil system to a value above the glass temperature during operation of the MRI system.
摘要翻译：磁共振成像（MRI）系统包括用于在检查体积中产生主磁场的主磁体系统。梯形线圈系统设置在主磁体系统和检查体积之间，并且包括嵌入具有玻璃温度的粘合材料中的次梯度线圈。控制器控制梯度线圈系统的温度。温度影响单元基于由控制单元提供的控制信号来影响梯度线圈系统的温度。控制单元和温度影响单元在MRI系统的操作期间将梯度线圈系统的装订材料的温度控制在高于玻璃温度的值。

4. 发明授权

US09435869B2 Magnetic resonance imaging system with satellite gradient coils 有权
标题翻译：具有卫星梯度线圈的磁共振成像系统
公开(公告)号：US09435869B2
公开(公告)日：2016-09-06
申请号：US13131296
申请日：2009-12-02
申请人： Jan Konijn , Gerardus Bernardus Jozef Mulder
发明人： Jan Konijn , Gerardus Bernardus Jozef Mulder
IPC分类号： G01R33/44 , G01R33/385 , G01R33/565
CPC分类号： G01R33/385 , G01R33/56572
摘要： The present invention relates to a magnetic resonance imaging system comprising a main magnet (102), the main magnet (102) comprising a magnet bore, the bore having a longitudinal axis (118) parallel to the main magnetic field of the main magnet (102), the magnet bore comprising a gradient coil system, wherein the gradient coil system comprises a first (108) satellite coil and an inner coil (114), wherein the first satellite coil comprises at least one pair of saddle coils (200; 202; 204; 206) arranged oppositely over the magnet bore and wherein the inner coil (114) comprises at least two pairs of saddle coils (208) arranged oppositely over the magnet bore, wherein the inner coil (114) is located at a larger diameter from the central axis (118) than the first (108) satellite coil, wherein the first satellite coil and the inner coil form a stepped coil structure.
摘要翻译：磁共振成像系统技术领域本发明涉及一种磁共振成像系统，其包括主磁体（102），所述主磁体（102）包括磁体孔，所述孔具有与所述主磁体（102）的主磁场平行的纵轴（118）），所述磁体孔包括梯度线圈系统，其中所述梯度线圈系统包括第一（108）卫星线圈和内线圈（114），其中所述第一卫星线圈包括至少一对鞍座线圈（200; 202; 所述内部线圈（114）包括相对地布置在所述磁体孔上方的至少两对鞍形线圈（208），其中所述内部线圈（114）位于比所述磁体孔更大的直径处所述中心轴线（118）比所述第一卫星线圈（108）多，其中所述第一卫星线圈和所述内线圈形成阶梯式线圈结构。

5. 发明授权

US09081070B2 Tesseral shim coil for a magnetic resonance system 有权
标题翻译：用于磁共振系统的固定垫片
公开(公告)号：US09081070B2
公开(公告)日：2015-07-14
申请号：US13203499
申请日：2010-03-18
申请人： Jan Konijn , Gerardus Bernardus Jozef Mulder
发明人： Jan Konijn , Gerardus Bernardus Jozef Mulder
IPC分类号： G01R33/341 , H01F5/00 , G01R33/3875
CPC分类号： G01R33/3875
摘要： A tesseral shim coil for shimming the magnetic field of a magnetic resonance system by generating the spherical harmonics of the sine and cosine type of the magnetic field, the tesseral shim coil comprising at least four saddle coils, wherein the sum of the azimuthal span of the at least four saddle coils is less than 360 degrees. First and second sets of shim coils, respectively generating sine and cosine components of the shim fields are combined into a single coil layer, thereby reducing the radial thickness of the shim coil assembly.
摘要翻译：一种固定垫片线圈，用于通过产生磁场的正弦和余弦类型的球面谐波来对磁共振系统的磁场进行匀场，所述振动线圈包括至少四个鞍形线圈，其中所述方位角跨度的和至少四个鞍形线圈小于360度。分别产生垫片的正弦和余弦分量的第一组和第二组垫片被组合成单个线圈层，由此减小了垫片线圈组件的径向厚度。

6. 发明申请

US20120098541A1 TESSERAL SHIM COIL FOR A MAGNETIC RESONANCE SYSTEM 有权
标题翻译：用于磁共振系统的TESSERAL SHIM线圈
公开(公告)号：US20120098541A1
公开(公告)日：2012-04-26
申请号：US13203499
申请日：2010-03-18
申请人： Jan Konijn , Gerardus Bernardus Jozef Mulder
发明人： Jan Konijn , Gerardus Bernardus Jozef Mulder
IPC分类号： G01R33/341 , H01F5/00
CPC分类号： G01R33/3875
摘要： A tesseral shim coil for shimming the magnetic field of a magnetic resonance system by generating the spherical harmonics of the sine and cosine type of the magnetic field, the tesseral shim coil comprising at least four saddle coils, wherein the sum of the azimuthal span of the at least four saddle coils is less than 360 degrees. First and second sets of shim coils, respectively generating sine and cosine components of the shim fields are combined into a single coil layer, thereby reducing the radial thickness of the shim coil assembly.
摘要翻译：一种固定垫片线圈，用于通过产生磁场的正弦和余弦类型的球面谐波来对磁共振系统的磁场进行匀场，所述振动线圈包括至少四个鞍形线圈，其中所述方位角跨度的和至少四个鞍形线圈小于360度。分别产生垫片的正弦和余弦分量的第一组和第二组垫片被组合成单个线圈层，由此减小了垫片线圈组件的径向厚度。

7. 发明授权

US06822452B2 MRI apparatus 失效
标题翻译： MRI装置
公开(公告)号：US06822452B2
公开(公告)日：2004-11-23
申请号：US10023163
申请日：2001-12-18
申请人： Cornelis Leonardus Gerardus Ham , Jan Konijn
发明人： Cornelis Leonardus Gerardus Ham , Jan Konijn
IPC分类号： G01V300
CPC分类号： G01R33/385 , G01R33/56518
摘要： The invention relates to a magnetic resonance imaging (MRI) apparatus (1) comprising a gradient coil assembly (3, 4, 5) for generating gradient magnetic fields in an imaging volume, the gradient coil assembly (3, 4, 5) comprising at least three gradient coils (6) for generating three different gradient magnetic fields. In order to compensate self-induced eddy currents in the gradient coils it is proposed according to the invention to provide a conductive element (71, 72, 73) in close proximity to at least one of the gradient coils (6) in order to compensate self-induced eddy currents in the gradient coil assembly (3, 4, 5). It is thus achieved that undesirable high-order behaviour of the gradient coils is suppressed and that conductive elements (71, 72, 73) are provided in the gradient coil assembly (3, 4, 5) such that undesirable high-order behavior of the gradient coils (3, 4, 5) is suppressed and the nature of the short term self-eddy field becomes similar to that of the gradient coils (3, 4, 5).
摘要翻译：本发明涉及一种磁共振成像（MRI）装置（1），其包括用于在成像体积中产生梯度磁场的梯度线圈组件（3,4,5），所述梯度线圈组件（3,4,5）包括：用于产生三个不同梯度磁场的至少三个梯度线圈（6）。为了补偿梯度线圈中的自感应涡电流，根据本发明提出了提供一种靠近至少一个梯度线圈（6）的导电元件（71,72,73），以便补偿梯度线圈组件（3,4,5）中的自感应涡流。因此实现了梯度线圈的不期望的高阶行为被抑制，并且在梯度线圈组件（3,4,5）中设置导电元件（71,72,73），使得不期望的高阶行为梯度线圈（3,4,5）被抑制，并且短期自涡流的性质变得与梯度线圈（3,4,5）相似。

8. 发明授权

US06696837B2 Coil system 失效
标题翻译：线圈系统
公开(公告)号：US06696837B2
公开(公告)日：2004-02-24
申请号：US10243058
申请日：2002-09-13
申请人： Jan Konijn
发明人： Jan Konijn
IPC分类号： G01V300
CPC分类号： G01R33/385 , G01R33/4215
摘要： The invention relates to a coil system which includes a plurality of series-connected coils (1, 2, 3, 4) which are provided with parallel coil turn configurations (10, 11, 12, 13) which are insulated from one another and connected to those of the neighboring coil (1, 2, 3, 4) so as to form conductive paths (10a, 11a, 12a, 13a) which span coils. Conventional coil systems have the drawback of lack of flexibility in respect of the numbers of turns. It is an object of the invention to provide a coil system which does not have an integer effective number of turns and nevertheless satisfies the requirements imposed as regards the quality of the magnetic field. In accordance with the invention it is proposed that the individual coils (1, 2, 3, 4) are provided with at least two groups of coil turn configurations (10, 11, 12, 13) whose numbers of turns deviate from one another and which are connected to the coil turn configurations (10, 11, 12, 13) of the respective neighboring coil (1, 2, 3, 4) in such a manner that the summed number of turns of each conductive path (10a, 11a, 12a, 13a) is the same. An advantage is offered by the freedom achieved as regards the choice of the number of turns of the coils.
摘要翻译：本发明涉及一种线圈系统，其包括多个串联连接的线圈（1,2,3,4），它们设有彼此绝缘并连接的平行线圈匝构造（10,11,12,13）与相邻的线圈（1,2,3,4）的那些线路形成跨越线圈的导电路径（10a，11a，12a，13a）。传统的线圈系统具有关于匝数缺乏灵活性的缺点。本发明的目的是提供一种不具有整数有效匝数的线圈系统，并且仍然满足关于磁场质量的要求。根据本发明，提出了各个线圈（1,2,3,4）设置有至少两组线圈匝构造（10,11,12,13），其匝数彼此偏离，并且它们以相应的相邻线圈（1,2,3,4）的线圈匝构造（10,11,12,13）的方式连接，使得每个导电路径（10a，11a， 12a，13a）是相同的。通过在线圈匝数的选择方面实现的自由度提供了一个优点。

9. 发明授权

US5019778A Magnetic resonance apparatus with an optimized detection field 失效
标题翻译：具有优化检测场的磁共振装置
公开(公告)号：US5019778A
公开(公告)日：1991-05-28
申请号：US426335
申请日：1989-10-24
申请人： Wilhelmus R. M. Mens , Jan Konijn
发明人： Wilhelmus R. M. Mens , Jan Konijn
IPC分类号： A61B5/055 , G01R33/34 , G01R33/36
CPC分类号： G01R33/34076 , G01R33/36 , G01R33/422 , G01R33/5659
摘要： In an rf coil of a magnetic resonance apparatus steps are taken to optimize a uniform rf measuring field. To this end, axially extending current conductors are provided with means for generating a non-constant effective current intensity in current paths extending across a cylindrical surface so as to be parallel with a symmetry axis of the coil. This can be realized by deflecting axial conductors away from the cylindrical surface, by partly shielding them, by adding auxiliary coils to be individually controlled, or by connecting L-C circuits across the current conductors.

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