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：US20130208249A1

公开(公告)日：2013-08-15

申请号：US13682794

申请日：2012-11-21

申请人： Ralph Kimmlingen

发明人： Ralph Kimmlingen

IPC分类号： G03B21/14

CPC分类号： G03B21/14 ,  A61B5/0555 ,  G01R33/283

摘要： A medical imaging apparatus includes a detector unit and a housing unit enclosing the detector unit. A cylindrical receiving region is provided for receiving a patient. The receiving region is enclosed in a cylindrical manner by the housing unit enclosing the detector unit. A projection unit is provided that has at least one projection surface unit, on which images of objects disposed outside the detector unit and the housing unit enclosing the detector unit are displayed to generate a virtual viewing window for an observer.

摘要翻译： 医疗成像设备包括检测器单元和包围检测器单元的壳体单元。 提供圆柱形接收区域用于接收患者。 接收区域由围绕检测器单元的壳体单元以圆柱形方式封闭。 提供一种投影单元，其具有至少一个投影表面单元，在该投影表面单元上显示设置在检测器单元外部的物体图像和包围检测器单元的壳体单元，以生成观察者的虚拟观察窗口。

公开(公告)号：US20110167924A1

公开(公告)日：2011-07-14

申请号：US13005351

申请日：2011-01-12

申请人： Ralph Kimmlingen

发明人： Ralph Kimmlingen

IPC分类号： G01F1/56

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：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：US07538551B2

公开(公告)日：2009-05-26

申请号：US11522228

申请日：2006-09-15

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

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

IPC分类号： G01V3/00

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：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：US20130181713A1

公开(公告)日：2013-07-18

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：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：US20100172560A1

公开(公告)日：2010-07-08

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： G06K9/00 ,  G01R33/48

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。