公开(公告)号：US07446531B2

公开(公告)日：2008-11-04

申请号：US11687066

申请日：2007-03-16

申请人： Wilfried Schnell ,  Markus Vester

发明人： Wilfried Schnell ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/341 ,  A61B5/0555 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/3415

摘要： A magnetic resonance system has a cylindrical patient support unit in the form of a chamber delimited by a wall with a patient bed, as well as at least one flexible flat local coil element with at least one local coil. The local coil element is attached on two opposite sides to mountings accommodated in the chamber. At least one of the mountings at one side is guided to allow movement along the chamber wall, during which manual or automatic movement the local coil element is moved from a storage position adjacent to the wall of the chamber into a position on the patient, or the local coil element attached to the patient bed is able to be moved manually from a storage position to the side or below the patient bed against a return force, into a position on the patient.

摘要翻译： 磁共振系统具有由具有患者床的壁限定的腔室形式的圆柱形患者支撑单元，以及具有至少一个局部线圈的至少一个柔性扁平局部线圈元件。 局部线圈元件安装在容纳在腔室中的安装件的两个相对侧上。 在一侧的至少一个安装件被引导以允许沿着室壁移动，在此期间手动或自动移动局部线圈元件从与腔室壁相邻的存储位置移动到患者的位置，或 附着在患者床上的局部线圈元件能够被手动地从储存位置移动到患者床的侧面或下方，抵抗着返回力而移动到病人的位置。

公开(公告)号：US20080129293A1

公开(公告)日：2008-06-05

申请号：US11687066

申请日：2007-03-16

申请人： Wilfried Schnell ,  Markus Vester

发明人： Wilfried Schnell ,  Markus Vester

IPC分类号： G01R33/28

CPC分类号： G01R33/341 ,  A61B5/0555 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/3415

摘要： A magnetic resonance system has a cylindrical patient support unit in the form of a chamber delimited by a wall with a patient bed, as well as at least one flexible flat local coil element with at least one local coil. The local coil element is attached on two opposite sides to mountings accommodated in the chamber. At least one of the mountings at one side is guided to allow movement along the chamber wall, during which manual or automatic movement the local coil element is moved from a storage position adjacent to the wall of the chamber into a position on the patient, or the local coil element attached to the patient bed is able to be moved manually from a storage position to the side or below the patient bed against a return force, into a position on the patient.

公开(公告)号：US06876197B2

公开(公告)日：2005-04-05

申请号：US10903643

申请日：2004-07-30

申请人： Adam Albrecht ,  Horst Kröckel ,  Wilfried Schnell ,  Markus Vester

发明人： Adam Albrecht ,  Horst Kröckel ,  Wilfried Schnell ,  Markus Vester

IPC分类号： G01R33/36 ,  G01V3/00

CPC分类号： G01R33/3614

摘要： In a transmission arrangement for a magnetic resonance apparatus, a high-frequency input signal, via an input terminal is supplied to a high-frequency power amplifier. The amplifier amplifiers the input signal with from a high-frequency output signal and supplies it to an antenna arrangement that emits it as a magnetic resonance excitation signal. Directional couplers are respectively connected between the input terminal and the amplifier and between the amplifier and the antenna arrangement. The acquired signals are supplied to an amplitude controller that drives an amplitude regulator preceding the high-frequency power amplifier.

摘要翻译： 在用于磁共振装置的传输装置中，经由输入端子的高频输入信号被提供给高频功率放大器。 放大器从高频输出信号放大输入信号，并将其提供给发射为磁共振激励信号的天线装置。 方向耦合器分别连接在输入端子和放大器之间以及放大器和天线装置之间。 所获取的信号被提供给驱动高频功率放大器之前的幅度调节器的振幅控制器。

公开(公告)号：US20130162253A1

公开(公告)日：2013-06-27

申请号：US13722606

申请日：2012-12-20

申请人： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Ralph Oppelt ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

IPC分类号： G01R33/30

CPC分类号： G01R33/30 ,  G01R33/3415 ,  G01R33/3664 ,  G01R33/56383

摘要： A selection unit for a magnetic resonance imaging system may be provided. The selection unit electrically connects a first number of electrical terminals to a second number of communication entities. The selection unit is arranged in and/or on a mobile object-support element for moving an examination object which is to be depicted by the magnetic resonance imaging system into a recording position.

摘要翻译： 可以提供用于磁共振成像系统的选择单元。 选择单元将第一数量的电端子电连接到第二数量的通信实体。 选择单元布置在移动物体支撑元件中和/或上，用于将要由磁共振成像系统描绘的检查对象移动到记录位置。

公开(公告)号：US08035378B2

公开(公告)日：2011-10-11

申请号：US12332617

申请日：2008-12-11

申请人： Wilfried Schnell ,  Markus Vester

发明人： Wilfried Schnell ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/5612 ,  G01R33/288 ,  G01R33/3415 ,  G01R33/3607

摘要： A magnetic resonance system has multiple individual transmission antennas each charged with a transmission current to emit an individual excitation field in an examination volume to excite magnetic resonances in a subject, producing a total excitation field as a superimposition of the individual excitation fields. A determination device provided with a spatial distribution of an absorption rate of the examination subject, determines a combination of amplitudes and phase positions for the transmission currents relative to one another such that a locally absorbed power at a first point of the examination subject relative to a locally absorbed power at a second point of the examination subject satisfies a relative condition. The determined combination of amplitudes and phase positions are communicated to a control device, which charges the transmission antennas with transmission currents having the communicated phase positions and amplitudes scaled with a uniform scaling factor for all transmission currents relative to the communicated amplitudes.

摘要翻译： 磁共振系统具有多个单独的发射天线，每个发射天线都充满了传输电流，以在检查体积中发射单独的激发场，以激发对象中的磁共振，产生作为各个激励场的叠加的总激励场。 具有检查对象的吸收率的空间分布的确定装置确定相对于彼此的传输电流的幅度和相位位置的组合，使得在检查对象的第一点处的局部吸收功率相对于 检查对象的第二点的局部吸收力满足相对条件。 所确定的幅度和相位位置的组合被传送到控制装置，该控制装置利用具有所传送的相位位置的传输电流和相对于所传送的振幅的所有传输电流的均匀缩放因子的幅度进行放大来对发射天线进行充电。

公开(公告)号：US08026721B2

公开(公告)日：2011-09-27

申请号：US12392537

申请日：2009-02-25

申请人： Daniel Sodickson ,  Stephan Biber ,  Markus Vester ,  Wolfgang Renz ,  Wilfried Schnell

发明人： Daniel Sodickson ,  Stephan Biber ,  Markus Vester ,  Wolfgang Renz ,  Wilfried Schnell

IPC分类号： G01V3/00

CPC分类号： G01R33/3415 ,  G01R33/34023

摘要： In a magnetic resonance imaging apparatus and method, radio frequency signals are radiated into an examination subject and/or received from the examination subject by an array of radio frequency coils that completely encircles the examination subject, and that is located at a distance from the examination subject out of contact with the examination subject.

摘要翻译： 在磁共振成像装置和方法中，将射频信号通过完全包围检查对象的射频线圈阵列照射到检查对象和/或从检查对象接收，并且位于与检查距离的位置 与考试科目无关。

公开(公告)号：US20100213939A1

公开(公告)日：2010-08-26

申请号：US12392537

申请日：2009-02-25

申请人： Daniel Sodickson ,  Stephan Biber ,  Markus Vester ,  Wolfgang Renz ,  Wilfried Schnell

发明人： Daniel Sodickson ,  Stephan Biber ,  Markus Vester ,  Wolfgang Renz ,  Wilfried Schnell

IPC分类号： G01R33/48

CPC分类号： G01R33/3415 ,  G01R33/34023

摘要： In a magnetic resonance imaging apparatus and method, radio frequency signals are radiated into an examination subject and/or received from the examination subject by an array of radio frequency coils that completely encircles the examination subject, and that is located at a distance from the examination subject out of contact with the examination subject.

摘要翻译： 在磁共振成像装置和方法中，将射频信号通过完全包围检查对象的射频线圈阵列照射到检查对象和/或从检查对象接收，并且位于与检查距离的位置 与考试科目无关。

公开(公告)号：US20090051363A1

公开(公告)日：2009-02-26

申请号：US12281494

申请日：2007-01-22

申请人： Peter Feld ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

发明人： Peter Feld ,  Georg Rauh ,  Wilfried Schnell ,  Markus Vester

IPC分类号： G01V3/12 ,  H01P1/38

CPC分类号： H01P1/383

摘要： A circulator has a ferrite, and the circulator is arranged in the vicinity of a device that produces a static magnetic field in the environment surrounding the device, this static magnetic field giving the circulator a non-reciprocal behavior, with respect to circulation of energy among the gates of the circulator, as a result of interaction of the ferrite with the static magnetic field. A magnetic resonance apparatus embodies such a circulator, and the basic field magnet of this magnetic resonance apparatus generates the static magnetic field.

摘要翻译： 循环器具有铁氧体，并且循环器布置在围绕设备的环境中产生静态磁场的装置附近，该静磁场相对于循环器中的能量循环而产生不可逆的行为 由于铁氧体与静磁场的相互作用，循环器的栅极。 磁共振装置体现这种环行器，并且该磁共振装置的基本场磁体产生静磁场。

公开(公告)号：US20080164960A1

公开(公告)日：2008-07-10

申请号：US11994019

申请日：2007-01-30

申请人： Wilfried Schnell ,  Markus Vester

发明人： Wilfried Schnell ,  Markus Vester

IPC分类号： H01P7/08

CPC分类号： G01R33/345 ,  G01R33/3642

摘要： A resonator for magnetic resonance applications has a conductor element proceeding in an extension direction, that operates with a resonance current at a resonance frequency oscillating therein in the extension direction. The conductor element is tuned to the resonance frequency and has an overall length in the extension direction that is smaller than half of the wavelength of the resonance frequency. The conductor element is a multi-layer conductor with layers that are electrically insulated from each other that, in said extension direction, have layer ends that are capacitively coupled with each other. During operation of the conductor element at the resonance frequency, respective layer currents flow in the layers in the extension direction that are substantially equal in magnitude.

摘要翻译： 用于磁共振应用的谐振器具有沿延伸方向前进的导体元件，其以在延伸方向上振荡的谐振频率的谐振电流工作。 导体元件被调谐到谐振频率，并且在延伸方向上的总长度小于谐振频率波长的一半。 导体元件是具有彼此电绝缘的层的多层导体，其在所述延伸方向上具有彼此电容耦合的层端。 在谐振频率下的导体元件工作期间，各层电流在延伸方向的层中流动，其大小基本相等。

公开(公告)号：US20070120629A1

公开(公告)日：2007-05-31

申请号：US11606162

申请日：2006-11-28

申请人： Wilfried Schnell ,  Markus Vester

发明人： Wilfried Schnell ,  Markus Vester

IPC分类号： H01P7/00

CPC分类号： G01R33/34 ,  G01R33/341

摘要： A resonator for magnetic resonance applications has a conductor element that extends from a first conductor end to a second conductor end. During operation of the conductor element at a resonance frequency, a resonance current oscillates from the first conductor end to the second conductor end and back. The conductor ends are coupled with one another via a circuit that tunes the conductor element to the resonance frequency. The conductor element is fashioned as a multi-layer conductor with a number of layers that exhibit layer ends at the conductor ends. The circuit causes layer currents that are of different magnitudes among one another to flow in the layers during operation of the conductor element at the resonance frequency.

摘要翻译： 用于磁共振应用的谐振器具有从第一导体端延伸到第二导体端的导体元件。 在谐振频率下的导体元件工作期间，谐振电流从第一导体端向第二导体末端和背面振荡。 导体端通过将导体元件调谐到谐振频率的电路相互耦合。 导体元件被形成为具有多个层的多层导体，其在导体端处呈现出层末端。 该电路使得在谐振频率下在导体元件工作期间彼此之间具有不同幅度的层电流在层中流动。