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：US09176209B2

公开(公告)日：2015-11-03

申请号：US13552442

申请日：2012-07-18

申请人： Eva Eberlein ,  Ralph Kimmlingen ,  Helmut Lenz ,  Franz Schmitt

发明人： Eva Eberlein ,  Ralph Kimmlingen ,  Helmut Lenz ,  Franz Schmitt

IPC分类号： G01R33/54 ,  G01R33/385

CPC分类号： G01R33/543 ,  G01R33/385 ,  G01R33/3852

摘要： A gradient pulse generator generates reference current signals for a plurality of gradient coils of a gradient coil system of a magnetic resonance system and supplies each of the reference current signals to a controller assigned to one of the gradient coils. Also supplied to the respective controller is an actual current signal that is characteristic of the current flowing in the respective gradient coil. Each of the controllers generates a control signal and accordingly drives a gradient power amplifier assigned to the respective gradient coil. The gradient power amplifiers apply a current to the gradient coils assigned to the gradient power amplifiers in accordance with the generated control signals. Each of the controllers is also supplied with the reference current signal or the actual current signal of at least one other gradient coil or the time derivative of the reference current signal or the actual current signal.

摘要翻译： 梯度脉冲发生器产生用于磁共振系统的梯度线圈系统的多个梯度线圈的参考电流信号，并将每个参考电流信号提供给分配给一个梯度线圈的控制器。 还提供给相应控制器的是实际电流信号，其是在各个梯度线圈中流动的电流的特征。 每个控制器产生控制信号，并相应地驱动分配给相应梯度线圈的梯度功率放大器。 梯度功率放大器根据所生成的控制信号向分配给梯度功率放大器的梯度线圈施加电流。 每个控制器还提供参考电流信号或至少一个其他梯度线圈的实际电流信号或参考电流信号或实际电流信号的时间导数。

公开(公告)号：US20140347054A1

公开(公告)日：2014-11-27

申请号：US14283764

申请日：2014-05-21

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/38

CPC分类号： G01R33/38 ,  G01R33/3403 ,  G01R33/34084 ,  G01R33/341 ,  G01R33/3415

摘要： A magnetic resonance system includes a basic magnet that surrounds a cylindrical examination volume of the magnetic resonance system, the cylindrical examination volume defining a longitudinal axis, and a send structure configured to generate a high frequency excitation field (B1) in the examination volume. The high frequency excitation field is configured to excite an object to be examined in the examination volume, such that the object emits magnetic resonance signals. The basic magnet is configured to generate a basic magnetic field (B0) in the examination volume that is constant over time and at least substantially homogeneous spatially. The send structure includes at least first transmitting antennae and second transmitting antennae that are configured to load the examination volume with the high frequency excitation field (B1).

摘要翻译： 磁共振系统包括围绕磁共振系统的圆柱形检查体积的基本磁体，限定纵向轴线的圆柱形检查体积和被配置为在检查体积中产生高频激励场（B1）的发送结构。 高频激励场被配置为在检查体积中激发要检查的物体，使得物体发射磁共振信号。 基本磁体被配置为在检查体积中产生基本磁场（B0），该基本磁场在时间上是恒定的并且在空间上至少基本上均匀。 发送结构至少包括第一发射天线和第二发射天线，其被配置为用高频激励场（B1）加载检查音量。

公开(公告)号：US08643370B2

公开(公告)日：2014-02-04

申请号：US13005351

申请日：2011-01-12

申请人： Ralph Kimmlingen

发明人： Ralph Kimmlingen

IPC分类号： G01V3/00

CPC分类号： G01R33/3856

摘要： A cooling water measurement system for a gradient system of an imaging system, such as a magnetic resonance system, is provided. A volume of cooling water flowing through at least one gradient system cooling water tube of the gradient system per unit of time is determined. The gradient system cooling water measurement system includes a voltage measurement system for measuring a Hall voltage.

摘要翻译： 提供了一种用于诸如磁共振系统的成像系统的梯度系统的冷却水测量系统。 确定每单位时间流过梯度系统的至少一个梯度系统冷却水管的一定体积的冷却水。 梯度系统冷却水测量系统包括用于测量霍尔电压的电压测量系统。

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：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 。