公开(公告)号：US20130187653A1

公开(公告)日：2013-07-25

申请号：US13554870

申请日：2012-07-20

申请人： Eva Eberlein ,  Ralph Kimmlingen ,  Franz Schmitt ,  Johann Schuster

发明人： Eva Eberlein ,  Ralph Kimmlingen ,  Franz Schmitt ,  Johann Schuster

IPC分类号： G01R33/54

CPC分类号： G01R33/543 ,  G01R33/389

摘要： A controller of a magnetic resonance system determines an activation signal vector based on a target field predetermined for the controller in conjunction with field characteristics of field coils known to the controller. The activation signal vector includes a respective activation signal for each field coil. The controller determines the activation signal vector such that within a predetermined examination volume of the magnetic resonance system, any deviation of an ideal field that would result if ideal coils were subjected to the activation signals of the activation signal vector from the target field is minimized. The controller determines a compensation signal vector based on the activation signal vector in conjunction with eddy current characteristics of the field coils known to the controller. The compensation signal vector is used to minimize a deviation of an actual field from the target field within the predetermined examination volume of the magnetic resonance system.

摘要翻译： 磁共振系统的控制器结合控制器已知的场线圈的场特性，基于为控制器预定的目标场确定激活信号矢量。 激活信号向量包括用于每个励磁线圈的相应启动信号。 控制器确定激活信号向量，使得在磁共振系统的预定检查体积内，如果理想线圈受到来自目标场的激活信号矢量的激活信号的任何理想场的偏差都将最小化。 控制器基于激活信号向量结合控制器已知的励磁线圈的涡流特性来确定补偿信号向量。 补偿信号矢量被用于最小化在磁共振系统的预定检查体积内的实际场与目标场的偏差。

公开(公告)号：US20120317795A1

公开(公告)日：2012-12-20

申请号：US13525177

申请日：2012-06-15

申请人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster

发明人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster

IPC分类号： H01F7/06

CPC分类号： G01R33/3858 ,  G01R33/3875 ,  G01R33/4215 ,  Y10T29/49004 ,  Y10T29/4902 ,  Y10T29/49071 ,  Y10T29/53265

摘要： A method for producing a gradient coil assembly for a magnetic resonance imaging system includes applying a number of primary gradient coils and a number of secondary gradient coils to a winding mandrel to form the gradient coil assembly. A control coil arrangement is associated with the winding mandrel. During an intermediate check before completion of the gradient coil assembly, at least one coupling inductance value between the control coil arrangement and at least one of the primary gradient coils and/or at least one of the secondary gradient coils is determined. An arrangement of the relevant gradient coils on the winding mandrel is corrected as a function of the at least one coupling inductance value.

摘要翻译： 用于制造用于磁共振成像系统的梯度线圈组件的方法包括将多个初级梯度线圈和多个次级梯度线圈施加到绕组心轴以形成梯度线圈组件。 控制线圈装置与卷绕心轴相关联。 在梯形线圈组件完成之前的中间检查期间，确定控制线圈装置与至少一个主梯度线圈和/或至少一个次级梯度线圈之间的至少一个耦合电感值。 作为至少一个耦合电感值的函数校正绕组心轴上的相关梯度线圈的布置。

公开(公告)号：US20120119741A1

公开(公告)日：2012-05-17

申请号：US13090070

申请日：2011-04-19

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01R33/385 ,  H01F7/06

CPC分类号： G01R33/3858 ,  G01R33/3856 ,  Y10T29/4902

摘要： The present embodiments optimize a gradient coil structure with a gradient coil arrangement for a magnetic resonance tomography device. The gradient coil arrangement includes a carrier plate with holes. Inserts are located in the holes. The inserts are made of an electrically isolating, thermally conductive material.

摘要翻译： 本实施例使用用于磁共振断层摄影装置的梯度线圈装置来优化梯度线圈结构。 梯度线圈装置包括具有孔的载板。 插入位于孔中。 插入件由电绝缘导热材料制成。

公开(公告)号：US09182466B2

公开(公告)日：2015-11-10

申请号：US13090070

申请日：2011-04-19

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01R33/385 ,  H01F7/06

CPC分类号： G01R33/3858 ,  G01R33/3856 ,  Y10T29/4902

摘要： The present embodiments optimize a gradient coil structure with a gradient coil arrangement for a magnetic resonance tomography device. The gradient coil arrangement includes a carrier plate with holes. Inserts are located in the holes. The inserts are made of an electrically isolating, thermally conductive material.

摘要翻译： 本实施例使用用于磁共振断层摄影装置的梯度线圈装置来优化梯度线圈结构。 梯度线圈装置包括具有孔的载板。 插入位于孔中。 插入件由电绝缘导热材料制成。

公开(公告)号：US09110145B2

公开(公告)日：2015-08-18

申请号：US13554870

申请日：2012-07-20

申请人： Eva Eberlein ,  Ralph Kimmlingen ,  Franz Schmitt ,  Johann Schuster

发明人： Eva Eberlein ,  Ralph Kimmlingen ,  Franz Schmitt ,  Johann Schuster

IPC分类号： G01R33/54 ,  G01R33/389

CPC分类号： G01R33/543 ,  G01R33/389

摘要： A controller of a magnetic resonance system determines an activation signal vector based on a target field predetermined for the controller in conjunction with field characteristics of field coils known to the controller. The activation signal vector includes a respective activation signal for each field coil. The controller determines the activation signal vector such that within a predetermined examination volume of the magnetic resonance system, any deviation of an ideal field that would result if ideal coils were subjected to the activation signals of the activation signal vector from the target field is minimized. The controller determines a compensation signal vector based on the activation signal vector in conjunction with eddy current characteristics of the field coils known to the controller. The compensation signal vector is used to minimize a deviation of an actual field from the target field within the predetermined examination volume of the magnetic resonance system.

摘要翻译： 磁共振系统的控制器结合控制器已知的场线圈的场特性，基于为控制器预定的目标场确定激活信号矢量。 激活信号向量包括用于每个励磁线圈的相应启动信号。 控制器确定激活信号向量，使得在磁共振系统的预定检查体积内，如果理想线圈受到来自目标场的激活信号矢量的激活信号的任何理想场的偏差都将最小化。 控制器基于激活信号向量结合控制器已知的励磁线圈的涡流特性来确定补偿信号向量。 补偿信号矢量被用于最小化在磁共振系统的预定检查体积内的实际场与目标场的偏差。

公开(公告)号：US20090179646A1

公开(公告)日：2009-07-16

申请号：US12354299

申请日：2009-01-15

申请人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster ,  Lothar Schoen ,  Stefan Stocker

发明人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster ,  Lothar Schoen ,  Stefan Stocker

IPC分类号： G01R33/34 ,  G01R33/38

CPC分类号： G01R33/3858 ,  Y10T29/49071

摘要： In a gradient coil and a method to manufacture a gradient coil for a magnetic resonance apparatus, the gradient coil has at least one saddle coil, the saddle coil having a spatially shaped, electrically conductive plate with a line-shaped recess penetrating the plate. Conductor structures that create a gradient magnetic field in an examination region when a current signal flows therethrough are formed by the recess and by the shaping of the plate. The recess is filled with an electrically insulating material before implementation of the spatial shaping.

摘要翻译： 在梯度线圈和制造磁共振装置的梯度线圈的方法中，梯度线圈具有至少一个鞍形线圈，鞍形线圈具有空间形状的导电板，其具有贯穿该板的线状凹部。 通过凹部和板的成形，形成当电流信号流过时在检查区域产生梯度磁场的导体结构。 在实施空间成形之前，凹部填充有电绝缘材料。

公开(公告)号：US08991036B2

公开(公告)日：2015-03-31

申请号：US13525177

申请日：2012-06-15

申请人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster

发明人： Sascha Fath ,  Ralph Kimmlingen ,  Johann Schuster

IPC分类号： H01F7/06 ,  G01R33/385 ,  G01R33/3875 ,  G01R33/421

CPC分类号： G01R33/3858 ,  G01R33/3875 ,  G01R33/4215 ,  Y10T29/49004 ,  Y10T29/4902 ,  Y10T29/49071 ,  Y10T29/53265

摘要： A method for producing a gradient coil assembly for a magnetic resonance imaging system includes applying a number of primary gradient coils and a number of secondary gradient coils to a winding mandrel to form the gradient coil assembly. A control coil arrangement is associated with the winding mandrel. During an intermediate check before completion of the gradient coil assembly, at least one coupling inductance value between the control coil arrangement and at least one of the primary gradient coils and/or at least one of the secondary gradient coils is determined. An arrangement of the relevant gradient coils on the winding mandrel is corrected as a function of the at least one coupling inductance value.

摘要翻译： 用于制造用于磁共振成像系统的梯度线圈组件的方法包括将多个初级梯度线圈和多个次级梯度线圈施加到绕组心轴以形成梯度线圈组件。 控制线圈装置与卷绕心轴相关联。 在梯形线圈组件完成之前的中间检查期间，确定控制线圈装置与至少一个主梯度线圈和/或至少一个次级梯度线圈之间的至少一个耦合电感值。 作为至少一个耦合电感值的函数校正绕组心轴上的相关梯度线圈的布置。

公开(公告)号：US20120249146A1

公开(公告)日：2012-10-04

申请号：US13411274

申请日：2012-03-02

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01R33/44

CPC分类号： G01R33/385 ,  G01R33/381 ,  G01R33/3873

摘要： In one embodiment, a magnetic resonance tomography system that has a gradient field coil system for generating a gradient field is provided. The gradient field coil system is also a main magnetic field generation system for generating a main field.

摘要翻译： 在一个实施例中，提供了具有用于产生梯度场的梯度场线圈系统的磁共振断层摄影系统。 梯度场线圈系统也是用于产生主场的主磁场产生系统。

公开(公告)号：US07852086B2

公开(公告)日：2010-12-14

申请号：US12401999

申请日：2009-03-11

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In an arrangement to correct eddy currents in a gradient coil of a magnetic resonance apparatus, the gradient coil having a primary gradient sub-coil and a secondary gradient sub-coil connected in series with the primary gradient sub-coil, the secondary gradient sub-coil is coupled with the primary gradient sub-coil such that the same magnitude gradient current flows through both (but in different directions) in order to compensate for magnetic field distortions of the primary gradient sub-coil. The primary gradient sub-coil has a first impedance while the secondary gradient sub-coil has a second impedance. A tuning impedance is connected in parallel with at least one of the two impedances.

摘要翻译： 在用于校正磁共振装置的梯度线圈中的涡流的装置中，具有与主梯度子线圈串联连接的初级梯度子线圈和次级梯度子线圈的梯度线圈， 线圈与主梯度子线圈耦合，使得相同的幅度梯度电流流过两个（但在不同方向），以便补偿主梯度子线圈的磁场失真。 主梯度子线圈具有第一阻抗，而次级梯度次级线圈具有第二阻抗。 调谐阻抗与两个阻抗中的至少一个并联连接。

公开(公告)号：US20090230964A1

公开(公告)日：2009-09-17

申请号：US12401999

申请日：2009-03-11

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01R33/34

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： In an arrangement to correct eddy currents in a gradient coil of a magnetic resonance apparatus, the gradient coil having a primary gradient sub-coil and a secondary gradient sub-coil connected in series with the primary gradient sub-coil, the secondary gradient sub-coil is coupled with the primary gradient sub-coil such that the same magnitude gradient current flows through both (but in different directions) in order to compensate for magnetic field distortions of the primary gradient sub-coil. The primary gradient sub-coil has a first impedance while the secondary gradient sub-coil has a second impedance. A tuning impedance is connected in parallel with at least one of the two impedances.

摘要翻译： 在用于校正磁共振装置的梯度线圈中的涡流的装置中，具有与主梯度子线圈串联连接的初级梯度子线圈和次级梯度子线圈的梯度线圈， 线圈与主梯度子线圈耦合，使得相同的幅度梯度电流流过两个（但在不同方向），以便补偿主梯度子线圈的磁场失真。 主梯度子线圈具有第一阻抗，而次级梯度次级线圈具有第二阻抗。 调谐阻抗与两个阻抗中的至少一个并联连接。