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91. 发明申请

US20090256571A1 MAGNETIC RESONANCE APPARATUS WITH RF AMPLIFIER(S) DISPOSED WITHIN THE SPACED DISTANCE BETWEEN THE PRIMARY AND SECONDARY GRADIENT COIL WINDINGS 有权
标题翻译：带有RF放大器的磁性共振装置在主要和次级线圈绕组之间的间隔距离内处理
公开(公告)号：US20090256571A1
公开(公告)日：2009-10-15
申请号：US12101252
申请日：2008-04-11
申请人： Mark A. Griswold , Jeremiah Heilmann , Wolfgang Renz , Markus Vester
发明人： Mark A. Griswold , Jeremiah Heilmann , Wolfgang Renz , Markus Vester
IPC分类号： G01R33/28
CPC分类号： G01R33/3858 , G01R33/34046 , G01R33/34076 , G01R33/3614 , G01R33/385 , G01R33/4215
摘要： An arrangement for controlling an antenna arrangement in a magnetic resonance device has an antenna arrangement that surrounds an examination region and that has at least one antenna element for emitting an amplified transmit signal. At least one amplifier is provided, at the input of which a high-frequency transmit signal is connected, which is present on the output side of the amplifier as an amplified transmit signal. The amplifier is connected to a feed point of the antenna arrangement on the output side, in order to emit the amplified transmit signal. Coil windings of a primary gradient coil are also provided, which at least partially include the antenna arrangement and the examination region. Coil windings of a secondary gradient coil at least partially include the coil windings of the primary gradient coil, the antenna arrangement (and the examination region). The coil windings of the secondary gradient coil and the coil windings of the primary gradient coil are at a distance from one another, in which the at least one amplifier is arranged.
摘要翻译：用于控制磁共振装置中的天线装置的装置具有围绕检查区域的天线装置，并且具有用于发射放大的发射信号的至少一个天线元件。提供至少一个放大器，在其输入处连接有高频发射信号，其作为放大的发射信号存在于放大器的输出侧。放大器连接到输出侧的天线装置的馈电点，以便发射放大的发射信号。还提供了主梯度线圈的线圈绕组，其至少部分地包括天线装置和检查区域。次级梯度线圈的线圈绕组至少部分地包括主梯度线圈的线圈绕组，天线装置（和检查区域）。次级梯度线圈的线圈绕组和主梯度线圈的线圈绕组彼此间隔开，其中布置有至少一个放大器。

92. 发明授权

US07579836B2 Multi-layer resonator for magnetic resonance applications with the resonator structure itself allowing equal magnitude current during active operation 有权
标题翻译：用于磁共振应用的多层谐振器，其谐振器结构本身在主动操作期间允许相等幅度的电流
公开(公告)号：US07579836B2
公开(公告)日：2009-08-25
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： G01V3/00 , 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。

93. 发明申请

US20090146660A1 MAGNETIC RESONANCE SYSTEM WITH POWER LOSS-OPTIMIZED OPERATION 有权
标题翻译：具有动力优化操作的磁共振系统
公开(公告)号：US20090146660A1
公开(公告)日：2009-06-11
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： G01R33/20
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 in the examination volume, with a total excitation field being a superimposition of the individual excitation fields. A determination device is provided with a spatial distribution of an absorption rate of the examination subject and 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 determination device communicates the combination of amplitudes and phase positions that it has determined to a control device. The control device charges the transmission antennas with transmission currents whose phase positions correspond with the phase positions communicated by the determination device and whose amplitudes are scaled with a uniform scaling factor for all transmission currents relative to the amplitudes communicated by the determination device.
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，以激发检查体积中的受检者的磁共振，总激励场是各个激励场的叠加。确定装置被提供有检查对象的吸收率的空间分布，并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在检查对象的第二点处的局部吸收力满足相对条件。确定装置将其已经确定的幅度和相位位置的组合传送到控制装置。控制装置用发射电流对发射天线进行充电，其相位位置对应于由确定装置传送的相位位置，并且其幅度以相对于由确定装置传送的振幅的所有发射电流的均匀缩放因子缩放。

94. 发明申请

US20090096456A1 ARRANGEMENT FOR TRANSMISSION OF MAGNETIC RESONANCE SIGNALS 有权
标题翻译：磁共振信号传输的安排
公开(公告)号：US20090096456A1
公开(公告)日：2009-04-16
申请号：US12243056
申请日：2008-10-01
申请人： Stephan Biber , Helmut Greim , Joerg Rothard , Markus Vester
发明人： Stephan Biber , Helmut Greim , Joerg Rothard , Markus Vester
IPC分类号： G01R33/36
CPC分类号： G01R33/3415 , A61B5/055 , G01R33/34046 , G01R33/3642 , G01R33/3692
摘要： An arrangement to transmit magnetic resonance signals has a local coil composed of a number of individual antennas for acquisition of radio-frequency signals of a magnetic resonance examination. Preamplifiers amplify the radio-frequency signals, and a transmission device transmits the radio-frequency signals from the local coil to the preamplifiers. The transmission device is fashioned as a readout coil and has a number of individual antennas. The individual antennas of the readout coil are magnetically coupled with the individual antennas of the local coil, with the individual antennas of the local coil and the individual antennas of the readout coil forming a linear MIMO transmission system describable by a transmission matrix.
摘要翻译：用于发送磁共振信号的装置具有由用于获取磁共振检查的射频信号的多个单独天线组成的局部线圈。前置放大器放大射频信号，并且传输设备将来自本地线圈的射频信号发送到前置放大器。传输装置被形成为读出线圈并且具有多个单独的天线。读出线圈的各个天线与本地线圈的各个天线磁耦合，本地线圈的各个天线和读出线圈的各个天线形成可由传输矩阵描述的线性MIMO传输系统。

95. 发明申请

US20090096455A1 ARRANGEMENT TO TRANSMIT MAGNETIC RESONANCE SIGNALS 有权
标题翻译：发射磁共振信号的安排
公开(公告)号：US20090096455A1
公开(公告)日：2009-04-16
申请号：US12243038
申请日：2008-10-01
申请人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
发明人： Stephan Biber , Jan Bollenbeck , Ralph Oppelt , Markus Vester
IPC分类号： G01R33/36
CPC分类号： G01R33/3415 , G01R33/3621 , G01R33/3664 , G01R33/3692
摘要： An arrangement to transmit magnetic resonance signals has at least two reception branches. Each reception branch contains a single antenna of a local coil as well as an amplifier connected with the single antenna, such that an amplified magnetic resonance signal is formed from a magnetic resonance signal that is acquired via the single antenna. In a multiplexer, each input is connected with a respective reception branch, such that the amplified magnetic resonance signals of the reception branch are combined by the multiplexer into a resulting signal using a time multiplexing method. A transmission path is connected on one side with an output of the multiplexer and on the other side with a receiver, such that the resulting signal is transmitted from the multiplexer to the receiver via the transmission path.
摘要翻译：传输磁共振信号的装置具有至少两个接收分支。每个接收分支包含本地线圈的单个天线以及与单个天线连接的放大器，使得经由单个天线获取的磁共振信号形成放大的磁共振信号。在多路复用器中，每个输入与相应的接收分支相连，使得接收分支的放大的磁共振信号由多路复用器使用时间复用方法组合成结果信号。传输路径在一侧与多路复用器的输出端连接，另一侧与接收器连接，使得所得到的信号经由传输路径从多路复用器传输到接收器。

96. 发明申请

US20080197922A1 AMPLIFIER DEVICE FOR AN ANTENNA OPERABLE IN AT LEAST ONE MODE 有权
标题翻译：用于天线的放大器装置可以在一个模式下运行
公开(公告)号：US20080197922A1
公开(公告)日：2008-08-21
申请号：US11766833
申请日：2007-06-22
申请人： Wilfried Schnell , Markus Vester
发明人： Wilfried Schnell , Markus Vester
IPC分类号： H03F3/68 , H01Q21/00
CPC分类号： H01Q3/40 , H01Q25/00 , H03F3/602
摘要： An amplifier device for a mode antenna has a number of amplifiers and a number of outputs. An input signal is fed to each amplifier, which is amplified by the respective amplifier into an amplified input signal. The amplified input signals are fed to an output matrix arranged after the amplifiers. Respective output signals are emitted by the output matrix at the outputs. The output matrix causes each amplified input signal to supply an output signal contribution for each output signal. Each output signal contribution of each output signal has an output-side contribution offset in relation to the corresponding amplified input signal, which depends on the amplified input signal that supplied the output signal contribution, and the output signal to which the output signal contribution contributes. The amplifier device is especially able to be used in a transmit arrangement for radio-frequency signals.
摘要翻译：用于模式天线的放大器装置具有多个放大器和多个输出。输入信号被馈送到每个放大器，其由相应的放大器放大成放大的输入信号。放大的输入信号被馈送到布置在放大器之后的输出矩阵。各输出信号由输出矩阵输出。输出矩阵使得每个放大的输入信号为每个输出信号提供输出信号贡献。每个输出信号的每个输出信号贡献具有相对于对应的放大输入信号的输出侧贡献偏移，其取决于提供输出信号贡献的放大输入信号和输出信号贡献贡献的输出信号。放大器装置特别能够用于射频信号的发送装置。

97. 发明申请

US20070207763A1 MIXER CIRCUIT WITH BALANCED FREQUENCY MIXER WITH VARACTOR DIODES 有权
标题翻译：具有变压器二极管的平衡混频器的混频器电路
公开(公告)号：US20070207763A1
公开(公告)日：2007-09-06
申请号：US11680720
申请日：2007-03-01
申请人： Jan Bollenbeck , Martin Hergt , Markus Vester
发明人： Jan Bollenbeck , Martin Hergt , Markus Vester
IPC分类号： H04B1/26
CPC分类号： H03D7/1408
摘要： In a mixer circuit with a balanced frequency mixer with varactor diodes, a first input signal that exhibits a first input frequency can be fed to the frequency mixer via a first input. Furthermore, a second input signal that exhibits a second input frequency can be fed to the frequency mixer via a second input. The frequency mixer has at least two amplifier elements fashioned as varactor diodes. These amplifier elements mix the input signals with one another into a mix signal with a first signal component and a second signal component. The first signal component exhibits a first component frequency, the second signal component a second component frequency. The first component frequency is equal to the sum of the first and second input frequencies, the second component frequency is equal to the difference of the first and second input frequencies. An output signal that contains at least one of the signal components can be tapped via the output. The frequency mixer is fashioned as a balanced frequency mixer in which at least the second input and the output are decoupled from one another. The second input frequency is a multiple of the first input frequency. An adjustment circuit for adjustment of an operating point of the varactor diodes is connected in parallel with each varactor diode.
摘要翻译：在具有具有变容二极管的平衡混频器的混频器电路中，具有第一输入频率的第一输入信号可以经由第一输入馈送到混频器。此外，具有第二输入频率的第二输入信号可以经由第二输入馈送到混频器。混频器具有至少两个放大器元件，其形式为变容二极管。这些放大器元件将输入信号彼此混合成具有第一信号分量和第二信号分量的混合信号。第一信号分量呈现第一分量频率，第二信号分量呈现第二分量频率。第一分量频率等于第一和第二输入频率的和，第二分量频率等于第一和第二输入频率的差。包含至少一个信号分量的输出信号可以通过输出进行抽头。混频器被形成为平衡混频器，其中至少第二输入和输出彼此解耦。第二输入频率是第一输入频率的倍数。用于调整变容二极管的工作点的调整电路与每个变容二极管并联连接。

98. 发明申请

US20070102641A1 Combined PET/MR Imaging System and APD-Based PET Detector For Use In Simultaneous PET/MR Imaging 有权
标题翻译：组合PET / MR成像系统和基于APD的PET检测器，用于同时PET / MR成像
公开(公告)号：US20070102641A1
公开(公告)日：2007-05-10
申请号：US11532665
申请日：2006-09-18
申请人： Matthias Schmand , Ron Grazioso , Ronald Nutt , Robert Nutt , Nan Zhang , James Corbeil , Ralf Ladebeck , Markus Vester , Gunter Schnur , Wolfgang Renz , Hubertus Fischer , Bernd Pichler
发明人： Matthias Schmand , Ron Grazioso , Ronald Nutt , Robert Nutt , Nan Zhang , James Corbeil , Ralf Ladebeck , Markus Vester , Gunter Schnur , Wolfgang Renz , Hubertus Fischer , Bernd Pichler
IPC分类号： G01T1/164 , G01T1/166 , A61B5/05
CPC分类号： G01R33/481 , A61B6/037 , A61B8/5261 , G01R33/26 , G01R33/28 , G01R33/307 , G01R33/381 , G01T1/1603 , G01T1/2018 , G01T1/2985
摘要： APD-based PET modules are provided for use in combined PET/MR imaging. Each module includes a number of independent, optically isolated detectors. Each detector includes an array of scintillator (e.g. LSO) crystals read out by an array of APDs. The modules are positioned in the tunnel of a MR scanner. Simultaneous, artifact-free images can be acquired with the APD-based PET and MR system resulting in a high-resolution and cost-effective integrated PET/MR system.
摘要翻译：提供基于APD的PET模块，用于组合PET / MR成像。每个模块包括多个独立的光隔离探测器。每个检测器包括由APD阵列读出的闪烁体阵列（例如LSO）晶体。模块位于MR扫描仪的通道中。基于APD的PET和MR系统可以获得同时，无伪影的图像，从而产生高分辨率和成本效益的集成PET / MR系统。

99. 发明授权

US07173422B2 Generator for generating time-variable magnetic fields and magnetic resonance device 失效
标题翻译：用于产生时变磁场和磁共振装置的发电机
公开(公告)号：US07173422B2
公开(公告)日：2007-02-06
申请号：US10957434
申请日：2004-10-01
申请人： Jürgen Nistler , Stefan Stocker , Markus Vester
发明人： Jürgen Nistler , Stefan Stocker , Markus Vester
IPC分类号： G01R33/20 , G01V3/00 , H01F5/00
CPC分类号： G01R33/385 , G01R33/34046 , G01R33/34076 , G01R33/422
摘要： In one aspect, a generator for generating time-variable magnetic fields is provided. The generator includes a gradient coil having conductors extending in an area defined by a hollow first cylinder, and having no conductors in a central area of the hollow first cylinder, the central area defined by the volume of a second cylinder arranged coaxially with and inside the first cylinder, the second cylinder having a diameter of one third the diameter of the first cylinder. The generator also includes a high frequency shielding device enclosing the central area but not the conductors, a high frequency antenna arranged in the central area; and a coaxial connecting cable operatively connected to the high frequency antenna arranged along a longitudinal axis of the first and second cylinder, the connecting cable penetrating the high frequency shielding device at a plurality of locations.
摘要翻译：一方面，提供了一种用于产生时变磁场的发生器。发电机包括一个梯度线圈，其具有在由中空的第一气缸限定的区域中延伸的导体，并且在中空的第一气缸的中心区域中不具有导体，中心区域由第二气缸的体积限定，第一气缸，第二气缸的直径为第一气缸直径的三分之一。发电机还包括围绕中心区而不是导体的高频屏蔽装置，布置在中心区域的高频天线; 以及可操作地连接到沿着第一和第二气缸的纵向轴线布置的高频天线的同轴连接电缆，连接电缆在多个位置处穿透高频屏蔽装置。

100. 发明申请

US20060279283A1 Magnetic resonance system with suppression of capacitive coupling between an RF source and the subject 有权
标题翻译：磁共振系统，抑制RF源与被摄体之间的电容耦合
公开(公告)号：US20060279283A1
公开(公告)日：2006-12-14
申请号：US11389476
申请日：2006-03-24
申请人： Jurgen Nistler , Markus Vester
发明人： Jurgen Nistler , Markus Vester
IPC分类号： G01V3/00
CPC分类号： G01R33/422 , G01R33/34007 , G01R33/34046 , G01R33/3657 , G01R33/385
摘要： An examination subject arranged in an examination volume of a magnetic resonance system can be excited to magnetic resonance by an RF transmission antenna. The RF transmission antenna is fashioned as a resonant structure that surrounds a central axis of the magnetic resonance system running within the examination volume. The resonance structure has inner edges proceeding around the central axis on its inner side facing the central axis, which inner edges form a capacitively-bridged annular gap extending parallel to the central axis. The RF transmission antenna is embedded into the gradient coil, such that the gradient coil at least radially outwardly and axially surrounds the RF transmission antenna), and the inner edges of the RF transmission antenna are connected in an electrically-conductive manner with inner sides of the gradient coil to the central axis. They are arranged radially inwardly (viewed from the annular gap) and axially completely cover the annular gap as well as axially at least partially cover the inner sides of the gradient coil.
摘要翻译：配置在磁共振系统的检查体积中的检查对象可以被RF发送天线激励到磁共振。 RF发射天线被形成为围绕在检查体积内运行的磁共振系统的中心轴线的谐振结构。谐振结构具有内边缘围绕中心轴线在其面向中心轴线的内侧上延伸，该内边缘形成平行于中心轴线延伸的电容桥接环形间隙。射频发射天线被嵌入到梯度线圈中，使得梯度线圈至少径向向外并且轴向地围绕RF发射天线），并且RF发射天线的内边缘以导电方式与梯度线圈到中心轴线。它们径向向内（从环形间隙看）并且轴向地完全覆盖环形间隙，并且轴向地至少部分地覆盖梯度线圈的内侧。

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