公开(公告)号：US20070069730A1

公开(公告)日：2007-03-29

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：US08963548B2

公开(公告)日：2015-02-24

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： G01V3/00 ,  G01R33/34 ,  G01R33/385

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：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。

公开(公告)号：US10036794B2

公开(公告)日：2018-07-31

申请号：US15639410

申请日：2017-06-30

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： A61B5/055 ,  G01R33/563 ,  A61B6/04 ,  G01R33/54 ,  G01R33/561

CPC分类号： G01R33/56383 ,  A61B5/0555 ,  A61B6/0442 ,  G01R33/28 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/543 ,  G01R33/561 ,  G01R33/563

摘要： A patient couch for a magnetic resonance tomography system and a magnetic resonance tomography system are provided. The patient couch includes a feed facility for radiofrequency energy having a plurality of conduction paths for feeding radiofrequency energy. The patient couch also includes a plurality of plug-in connectors for local coils having a transmit coil, and a distribution structure for the distribution of radiofrequency energy from the feed facility to the plug-in connectors.

公开(公告)号：US20160041250A1

公开(公告)日：2016-02-11

申请号：US14819418

申请日：2015-08-05

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/58 ,  G01R33/28

CPC分类号： G01R33/583 ,  G01R33/246 ,  G01R33/288 ,  G01R33/3415

摘要： A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.

摘要翻译： 提供了一种方法和磁共振断层摄影（MRT）系统。 MRT系统包括被配置为存储在局部线圈特定基础上建立的发射矢量的控制器。 用于特定局部线圈的发射矢量指示可以由发射装置控制本地线圈的发射元件的哪些振幅和相位。 控制器被配置为启动对患者的患者特异性校准测量，以生成表示场分布的患者特异性校准数据。 控制器还被配置为根据在局部线圈特定基础上建立的存储的传输矢量来确定患者特定校准数据中的偏差。 患者特异性校准数据是在患者特定的患者的校准测量中生成的，并且表示场分布。 如果偏差超过阈值，否则进行成像MRT测量，否则执行并由监控设备监控。

公开(公告)号：US20150015261A1

公开(公告)日：2015-01-15

申请号：US14306576

申请日：2014-06-17

申请人： Ralph Kimmlingen ,  Norbert Rietsch

发明人： Ralph Kimmlingen ,  Norbert Rietsch

IPC分类号： G01R33/36 ,  G01R33/54 ,  G01R33/34

CPC分类号： G01R33/3671 ,  A61B5/055 ,  G01R33/34092 ,  G01R33/3415 ,  G01R33/421 ,  G01R33/543

摘要： The embodiments relate to a magnetic resonance imaging device, where the cladding of the patient bore of the MR imaging device includes a conductive layer.

摘要翻译： 实施例涉及磁共振成像装置，其中MR成像装置的患者孔的包层包括导电层。

公开(公告)号：US08755582B2

公开(公告)日：2014-06-17

申请号：US12633923

申请日：2009-12-09

申请人： Ralph Kimmlingen ,  Sabrina Kreher ,  Andreas Weidemann

发明人： Ralph Kimmlingen ,  Sabrina Kreher ,  Andreas Weidemann

IPC分类号： A61B6/03

CPC分类号： G01R33/56572 ,  G01R33/243 ,  G01R33/443

摘要： In a method and device to determine distortion correction data for distortion correction of magnetic resonance images acquired with a magnetic resonance system, a starting spherical function is calculated represents the magnetic field of a gradient coil of the magnetic resonance system on the basis of the conductor geometry of the gradient coil. A three-dimensional parameter map is determined that represents a magnetic field generated by the gradient coil using a defined measurement subject, with a defined gradient strength being set for the appertaining gradient coil. A deviation parameter map is generated on the basis of the parameter map and on the basis of a reference parameter map which was determined with deactivated gradient coil. Spherical function coefficients of the gradient magnetic field are determined by fitting a spherical function representing the magnetic field of the gradient coil to the deviation parameter map using the starting spherical function. The distortion correction data are determined on the basis of the spherical function coefficients of the fitted spherical function.

摘要翻译： 在确定用磁共振系统获得的磁共振图像的失真校正的失真校正数据的方法和装置中，计算起始球面函数是基于导体几何形状表示磁共振系统的梯度线圈的磁场 的梯度线圈。 确定三维参数图，其表示由使用定义的测量对象的梯度线圈产生的磁场，其中设定用于所述渐变线圈的限定的梯度强度。 基于参数图生成偏差参数图，并基于用去激活梯度线圈确定的参考参数图。 通过使用起始球面函数将表示梯度线圈的磁场的球面函数拟合到偏差参数图来确定梯度磁场的球面函数系数。 基于拟合的球面函数的球面函数系数来确定失真校正数据。

公开(公告)号：US08362777B2

公开(公告)日：2013-01-29

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： G01V3/00

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：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：US06418336B1

公开(公告)日：2002-07-09

申请号：US09632789

申请日：2000-08-04

申请人： Ralph Kimmlingen ,  Franz Schmitt

发明人： Ralph Kimmlingen ,  Franz Schmitt

IPC分类号： A61B5055

CPC分类号： G01R33/3852

摘要： In an MR tomography system and a method for operating an MR tomography system for the purpose of executing both fast and conventional measuring sequences with high image resolution without triggering stimulations in a living subject and with a high degree of freedom in the selection of imaging regions, a gradient coil is provided with at least two independently controllable potions, so that it is possible to set up gradient fields for a first imaging subregion and for a second imaging subregion that is not a subset of the first region and does not contain it, as well as an aggregate imaging region that contains at least the first and second imaging regions. The gradient fields for different regions can be set up in chronological succession, the various possibilities for setting up the gradient fields allows a selection dependent on the set measuring sequences to be determined prior to the execution of data acquisition with an examination subject present, so that stimulations do not occur in the actual execution of measuring sequences for image data acquisition.

摘要翻译： 在MR断层摄影系统和用于操作MR断层摄影系统的方法中，为了执行具有高图像分辨率的快速和常规测量序列，而不在活体中触发刺激，并且在成像区域的选择中具有高自由度， 梯度线圈设置有至少两个可独立控制的药水，使得可以为第一成像子区域和不是第一区域的子集而不包含第一成像子区域的第二成像子区域设置梯度场，如 以及至少包含第一和第二成像区域的聚集成像区域。 可以按时间顺序设置不同区域的梯度场，用于设置梯度场的各种可能性允许在使用检查对象存在的数据采集执行之前确定依赖于所设置的测量序列的选择，使得 在图像数据采集的测量序列的实际执行中不会发生刺激。