公开(公告)号：US07511499B2

公开(公告)日：2009-03-31

申请号：US11649617

申请日：2007-01-04

申请人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

发明人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/381 ,  G01R33/3873

摘要： Magnetic resonance device comprising a preferably essentially cylindrical vacuum housing containing a magnet together with a cooling device, said vacuum housing having an inner wall, an outer wall and two end walls, the inner wall and/or one or each end wall being fashioned as a composite component consisting of one or more components made of a non-metallic composite material and a plurality of metal components serving to provide mechanical reinforcement and having a lamellar or annular form for forming the inner wall or having the form of a segment of a circle for forming an end wall such that a reduction in eddy currents is produced.

摘要翻译： 磁共振装置包括优选地基本上圆柱形的真空壳体，其包含磁体和冷却装置，所述真空壳体具有内壁，外壁和两个端壁，所述内壁和/或一个或每个端壁被形成为 由一种或多种由非金属复合材料制成的部件和多个用于提供机械增强的金属部件组成的复合部件，并且具有用于形成内壁的片状或环形形式或具有圆形段的形式 形成端壁，从而产生涡流的减小。

公开(公告)号：US06903552B2

公开(公告)日：2005-06-07

申请号：US10777554

申请日：2004-02-12

申请人： Peter Dietz ,  Ralph Kimmlingen

发明人： Peter Dietz ,  Ralph Kimmlingen

IPC分类号： G01R33/385 ,  G01R33/421 ,  G01V3/00

CPC分类号： G01R33/385 ,  G01R33/4215

摘要： A magnetic resonance apparatus has a coil arrangement to generate a magnetic gradient field in an imaging volume and an electrically-conductive structure that at least partially surrounds the coil arrangement and in which, given a temporally changing current flow in the coil arrangement, eddy currents are caused that produce an eddy current field interfering with the gradient field within the imaging volume. For eddy current compensation the coil arrangement has at least two conductor sections from the group of: a first conductor section that contributes to the generation of the gradient field, and that additionally generates via the electrically-conductive structure a first interference factor in the form of a first eddy current field in the imaging volume, a second conductor section that contributes both to the generation of the gradient field, thereby generating via the electrically-conductive structure a second interference factor in the form of a second eddy current field in the imaging volume, and that generates a field compensating the first eddy current field, and a third conductor section that contributes exclusively to the compensation of interference factors in the form of an eddy current field. One of the conductor sections contributing to the compensation of interference factors is spaced, relative to the imaging volume, at less than or equal to the distance of one of the conductor sections contributing to the gradient field.

摘要翻译： 磁共振装置具有线圈装置，以在成像体积中产生磁梯度场和至少部分地围绕线圈装置的导电结构，并且其中，给定线圈装置中的时间上变化的电流，涡电流是 导致产生涡流场干扰成像体积内的梯度场。 对于涡流补偿，线圈装置具有至少两个来自以下组的导体部分：第一导体部分，其有助于产生梯度场，并且还经由导电结构产生第一干涉因子，其形式为 在成像体积中的第一涡流场，第二导体部分，其有助于产生梯度场，从而通过导电结构产生成像体积中第二涡流场形式的第二干涉因子 并且产生补偿第一涡流场的场，以及仅以涡流场的形式补偿干扰因子的第三导体部分。 有助于干扰因子补偿的导体部分之一相对于成像体积以小于或等于对梯度场贡献的导体部分之一的距离间隔开。

公开(公告)号：US20070159173A1

公开(公告)日：2007-07-12

申请号：US11649617

申请日：2007-01-04

申请人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

发明人： Peter Dietz ,  Ralph Kimmlingen ,  Johann Schuster ,  Stefan Stocker

IPC分类号： G01V3/00

CPC分类号： G01R33/3815 ,  G01R33/381 ,  G01R33/3873

摘要： Magnetic resonance device comprising a preferably essentially cylindrical vacuum housing containing a magnet together with a cooling device, said vacuum housing having an inner wall, an outer wall and two end walls, the inner wall and/or one or each end wall being fashioned as a composite component consisting of one or more components made of a non-metallic composite material and a plurality of metal components serving to provide mechanical reinforcement and having a lamellar or annular form for forming the inner wall or having the form of a segment of a circle for forming an end wall such that a reduction in eddy currents is produced.

摘要翻译： 磁共振装置包括优选地基本上圆柱形的真空壳体，其包含磁体和冷却装置，所述真空壳体具有内壁，外壁和两个端壁，所述内壁和/或一个或每个端壁被形成为 由一种或多种由非金属复合材料制成的部件和多个用于提供机械增强的金属部件组成的复合部件，并且具有用于形成内壁的片状或环形形式或具有圆形段的形式 形成端壁，从而产生涡流的减小。

公开(公告)号：US06462547B1

公开(公告)日：2002-10-08

申请号：US09520175

申请日：2000-03-07

申请人： Oliver Heid ,  Peter Dietz ,  Ralph Kimmlingen

发明人： Oliver Heid ,  Peter Dietz ,  Ralph Kimmlingen

IPC分类号： G01V300

CPC分类号： G01R33/385 ,  G01R33/3854

摘要： Magnetic resonance tomography device has a gradient coil system that is fashioned such that the natural oscillation modes of the gradient coil system and the Lorentz forces are optimally orthogonally oriented toward one another, and a scalar product of the natural oscillation mode and the Lorentz force is formed for each point of the gradient coil system. A summation of these products, results in a value that is as close to zero as possible for each natural oscillation mode with the natural oscillation modes being prescribed by a weight- and/or spring rigidity distribution of the carrier structure, by weights that are introduced into the carrier structure and/or by components that modify the spring rigidity, or by heavy end rings and/or by setting the Lorentz forces by fashioning the conductor arrangement of the primary coil and/or a secondary coil, if present, and/or additional conductor sections given tubular gradient coil systems.

摘要翻译： 磁共振断层摄影装置具有梯度线圈系统，其梯度线圈系统的自然振荡模式和洛伦兹力最优地彼此正交地定向，并且形成自然振荡模式和洛伦兹力的标量积 对于梯度线圈系统的每个点。 这些产品的总和，对于每个自然振荡模式，对于每个自然振荡模式，由载体结构的重量和/或弹簧刚度分布规定的自然振荡模式，通过引入的重量，可以得到尽可能接近于零的值 和/或通过改变弹簧刚度的部件，或者通过重端环和/或通过使初级线圈和/或次级线圈（如果存在的话）的导体布置形成洛伦兹力，和/或 额外的导体部分给出了管状梯度线圈系统。

公开(公告)号：US20130229183A1

公开(公告)日：2013-09-05

申请号：US13783293

申请日：2013-03-02

申请人： Ralph Kimmlingen ,  Andreas Krug

发明人： Ralph Kimmlingen ,  Andreas Krug

IPC分类号： G01R33/34

CPC分类号： G01R33/3403 ,  G01R33/3856

摘要： A cylindrical gradient coil arrangement is provided for a magnetic resonance device. The arrangement includes at least one conductive structure that forms at least one gradient coil and a cooling device that uses a cooling fluid to cool the at least one conductive structure. The arrangement includes an outer carrier structure and an inner carrier structure. The outer carrier structure includes two tubular, coaxial outer sections with different diameters. The inner, tubular carrier structure is arranged between and coaxially with the outer sections. The conductive structure is placed on the inner carrier structure. The inner carrier structure is spaced from the outer sections by a clearance. The clearance forms a cooling channel through which the cooling fluid of the cooling device may flow. The inner carrier structure is fastened to the outer carrier structure at least in a point-by-point manner.

摘要翻译： 提供了一种用于磁共振装置的圆柱形梯度线圈装置。 该装置包括形成至少一个梯度线圈的至少一个导电结构和使用冷却流体来冷却至少一个导电结构的冷却装置。 该装置包括外部载体结构和内部载体结构。 外部载体结构包括具有不同直径的两个管状同轴外部部分。 内部管状载体结构布置在外部部分之间并且与外部部分同轴。 导电结构放置在内部载体结构上。 内部载体结构与外部部分间隔开间隙。 间隙形成冷却装置的冷却流体可流过的冷却通道。 内部载体结构至少以逐点方式固定到外部载体结构。

公开(公告)号：US07888938B2

公开(公告)日：2011-02-15

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： G01V3/00

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：US07403003B2

公开(公告)日：2008-07-22

申请号：US11523427

申请日：2006-09-19

申请人： Ralph Kimmlingen ,  Andreas Krug

发明人： Ralph Kimmlingen ,  Andreas Krug

IPC分类号： G01V3/00

CPC分类号： G01R33/385 ,  G01R33/3804 ,  G01R33/3815 ,  G01R33/3856 ,  G01R33/421

摘要： An assembly for magnetic field generation in a magnetic resonance tomography apparatus has a device for generation of a basic magnetic field, a vacuum vessel surrounding the basic field device and a device for generation of at least one gradient magnetic field. The assembly has a volume with a reduced magnetic field strength in a region between windings of at least one superconducting coil of the basic field device and a non-conductive wall of the vacuum vessel. The gradient field device is fashioned as a superconductor and is at least partially accommodated in this volume.

摘要翻译： 在磁共振断层摄影装置中用于产生磁场的组件具有用于产生基本磁场的装置，围绕基本现场装置的真空容器和用于产生至少一个梯度磁场的装置。 组件具有在基本现场设备的至少一个超导线圈的绕组与真空容器的非导电壁之间的区域中具有降低的磁场强度的体积。 梯度场设备被形成为超导体并且至少部分地容纳在该体积中。

公开(公告)号：US20060076954A1

公开(公告)日：2006-04-13

申请号：US11244779

申请日：2005-10-06

申请人： Ralph Kimmlingen ,  Axel Endt

发明人： Ralph Kimmlingen ,  Axel Endt

IPC分类号： G01V3/00

CPC分类号： G01R33/389

摘要： The invention relates to a method for compensating for a magnetic field disturbance affecting a magnetic resonance device, whereby the magnetic field disturbance is caused by a deflection of a component of the magnetic resonance device. To this end, the deflection or a variable causing the deflection is acquired in timed-dependent fashion, a mathematical field disturbance model is provided which models the effect the of the deflection on the magnetic field, and the acquired deflection or the variable causing the deflection is converted by means of the field disturbance model into a control variable for a compensation magnetic field generator or a high-frequency antenna. The compensation magnetic field generator controlled in this manner generates, for example, a compensation magnetic field which compensates for the magnetic field disturbance. The high-frequency antenna controlled in this manner is, for example, matched in its mid frequency to the magnetic field disturbance.

摘要翻译： 本发明涉及一种用于补偿影响磁共振装置的磁场干扰的方法，由此磁场扰动是由磁共振装置的部件偏转引起的。 为此，以时间依赖的方式获得引起偏转的偏转或变量，提供了数学场干扰模型，其对磁场上的偏转的影响进行建模，并且获得的偏转或引起偏转的变量 通过场干扰模型转换成用于补偿磁场发生器或高频天线的控制变量。 以这种方式控制的补偿磁场发生器产生例如补偿磁场干扰的补偿磁场。 以这种方式控制的高频天线例如在其中频与磁场干扰相匹配。

公开(公告)号：US06717409B2

公开(公告)日：2004-04-06

申请号：US10277070

申请日：2002-10-21

申请人： Ralph Kimmlingen ,  Johann Schuster

发明人： Ralph Kimmlingen ,  Johann Schuster

IPC分类号： G01V300

CPC分类号： G01R33/385

摘要： In a method for calculating conductor tracks of a gradient coil in a gradient coils for a magnetic resonance tomography apparatus and a magnetic resonance tomography apparatus employing such a gradient coil system, conductor tracks are calculated for a primary coil with multiple conductor bundles, and for a second coil which shields the primary coil, as well as for at least one booster coil that is interconnected with the conductor bundles of the primary coil, and with the secondary coil, so that a number of different homogeneity volumes can be produced at the center of the gradient coil system.

摘要翻译： 在用于计算用于磁共振断层摄影装置的梯度线圈中的梯度线圈的导体轨迹的计算方法和使用这种梯度线圈系统的磁共振断层摄影装置中，对于具有多个导体束的初级线圈计算导体轨迹，并且对于 屏蔽初级线圈的第二线圈以及与初级线圈的导体束互连的至少一个升压线圈和次级线圈，使得可以在中心处产生许多不同的均匀体积 梯度线圈系统。

公开(公告)号：US06501977B1

公开(公告)日：2002-12-31

申请号：US09712276

申请日：2000-11-15

申请人： Ralph Kimmlingen

发明人： Ralph Kimmlingen

IPC分类号： A61B5055

CPC分类号： A61B5/055 ,  G01R33/385 ,  G01R33/3852

摘要： In a method for operating a magnetic resonance tomography device having a gradient system, which contains at least one gradient coil arrangement for generating a gradient field in a spatial direction and which also contains an energy supply device that is connected to the gradient coil arrangement, and wherein the gradient coil arrangement has at least one first sub-coil and one second sub-coil, and wherein the energy supply device is fashioned such that currents can be adjusted independently of one another in the sub-coils for the continuous adjustment of at least one property of the gradient field, the current in at least one of the sub-coils is determined and adjusted by solving an optimization task containing a target function and at least one secondary condition so that stimulations of a living examination subject are avoided.

摘要翻译： 一种用于操作具有梯度系统的磁共振断层摄影装置的方法，所述梯度系统包含至少一个用于在空间方向上产生梯度场并且还包含连接到所述梯度线圈装置的能量供应装置的梯度线圈装置，以及 其中所述梯度线圈装置具有至少一个第一子线圈和一个第二子线圈，并且其中所述能量供应装置的形状使得可以在所述子线圈中彼此独立地调节电流以用于至少连续调节 通过解决包含目标功能的优化任务和至少一个次要条件来确定和调整至少一个子线圈中的电流，从而避免生活检查对象的刺激。