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：US20100308831A1

公开(公告)日：2010-12-09

申请号：US12795798

申请日：2010-06-08

申请人： Eva Eberlein ,  Ralph Kimmlingen

发明人： Eva Eberlein ,  Ralph Kimmlingen

IPC分类号： G01R33/44

CPC分类号： G01R33/3856

摘要： An optimization of a magnetic resonance apparatus is achieved by a device and a method to generate a gradient field in a magnetic resonance apparatus, wherein a field directed in a first direction is generated by a first flat/saddle coil cooling system, a field directed in an additional direction is generated by an additional flat/saddle coil cooling system, and wherein a gradient field pointing in a direction is composed of at least the field generated by the first flat/saddle coil cooling system and the field generated by the additional flat/saddle coil cooling system.

摘要翻译： 通过在磁共振装置中产生梯度场的装置和方法来实现磁共振装置的优化，其中通过第一平面/鞍形线圈冷却系统产生指向第一方向的场， 通过附加的平面/鞍形线圈冷却系统产生附加方向，并且其中指向方向的梯度场至少由第一平面/鞍形线圈冷却系统产生的场和由附加平面/ 鞍式盘管冷却系统。

公开(公告)号：US20070066883A1

公开(公告)日：2007-03-22

申请号：US11522228

申请日：2006-09-15

申请人： Ralph Kimmlingen ,  Andreas Krug ,  Johann Schuster ,  Axel Endt

发明人： Ralph Kimmlingen ,  Andreas Krug ,  Johann Schuster ,  Axel Endt

IPC分类号： A61B5/05 ,  G01N24/00 ,  F28D15/00

CPC分类号： G01R33/3856 ,  F28D15/00 ,  Y10T436/24

摘要： In a gradient coil device having at least one conductor structure for use in a magnetic resonance apparatus, the conductor structure is a conductive liquid, contained in a tube system, that flows through the tube system in order to carry off heat lost during the operation of the gradient coil device.

摘要翻译： 在具有用于磁共振装置中的至少一个导体结构的梯度线圈装置中，导体结构是包含在管系中的导电液体，其流过管系，以便在操作期间散失热量 梯度线圈装置。

公开(公告)号：US20060038566A1

公开(公告)日：2006-02-23

申请号：US11208185

申请日：2005-08-18

申请人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

发明人： Ralph Kimmlingen ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/385 ,  G01R33/422

摘要： A magnetic resonance apparatus has an RF antenna unit, a gradient coil unit and an RF shield, the conductor structures of which are independent of one another. The RF shield is arranged between the RF antenna unit and the gradient coil unit, a first RF field return volume is arranged between RF the antenna unit (1, 29, 55A, and the gradient coil unit, the RF field return volume closes RF magnetic field lines of the RF antenna unit and is bordered by the RF shield on the side of the gradient coil unit. The conductor structure of the gradient coil unit occupies a first region. A second conductor-free region is within the first region, on the side facing the RF antenna unit, between a primary gradient coil unit and a secondary shim gradient coil unit of the gradient coil unit. The second conductor-free region is at least partially surrounded by the conductor structure of the gradient coil unit and is fashioned as a second RF field return volume in connection with the first RF field return volume. The RF shield proceeds between the RF field return volumes and the conductor structure of the gradient coil unit. The RF antenna unit is closer to the data acquisition region of the magnetic resonance apparatus than the gradient coil unit.

摘要翻译： 磁共振装置具有RF天线单元，梯度线圈单元和RF屏蔽，其导体结构彼此独立。 RF屏蔽设置在RF天线单元和梯度线圈单元之间，RF天线单元（1,29,55A和梯度线圈单元之间）之间布置第一RF场返回音量，RF场返回音量关闭RF RF天线单元的磁场线，并且由梯形线圈单元侧的RF屏蔽界定，梯度线圈单元的导体结构占据第一区域，第二无导体区域在第一区域内，在 面向RF天线单元的一侧，梯度线圈单元的主梯度线圈单元和次级斜面梯形线圈单元之间，第二无导体区域至少部分地被梯度线圈单元的导体结构包围，并被形成 作为与第一RF场返回体积相关的第二RF场返回体积，RF屏蔽在RF场返回体积和梯度线圈单元的导体结构之间进行，RF天线单元更靠近 e数据采集区域比梯形线圈单元。

公开(公告)号：US06696836B2

公开(公告)日：2004-02-24

申请号：US10085344

申请日：2002-02-28

申请人： Ralph Kimmlingen

发明人： Ralph Kimmlingen

IPC分类号： G01V300

CPC分类号： G01R33/4215

摘要： In a method for operating a magnetic resonance apparatus, and a magnetic resonance apparatus for implementing the method, the magnetic resonance apparatus having a gradient system containing at least one gradient coil for generating a gradient field at least within an imaging volume, and at least one shield coil operable independently of the gradient coil for generating a shielding field with which the gradient field can be neutralized in a prescribable region, the gradient system is operated in an operating mode wherein the shield coil is operated for intensifying the gradient field within the imaging volume.

摘要翻译： 在一种用于操作磁共振装置的方法和用于实现该方法的磁共振装置中，磁共振装置具有包括至少一个梯度线圈的梯度系统，用于至少在成像体积内产生梯度场，并且至少一个 屏蔽线圈可独立于梯度线圈操作，用于产生屏蔽场，借助该屏蔽场可以在规定区域中中和梯度场，梯度系统以操作模式操作，其中屏蔽线圈被操作以增强成像体积内的梯度场 。