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21.发明授权Activation of field coils of a magnetic resonance system having eddy current compensation 有权激励具有涡流补偿的磁共振系统的励磁线圈公开(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。
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公开(公告)号：US20120234394A1
公开(公告)日：2012-09-20
申请号：US13395721
申请日：2010-09-04
申请人： Jurl Seletzky , Joerg Kauling , Björn Frahm , Helmut Brod , Marc Jenne , Franz Schmitt
发明人： Jurl Seletzky , Joerg Kauling , Björn Frahm , Helmut Brod , Marc Jenne , Franz Schmitt
CPC分类号： C12M29/06 , B01F3/04248 , B01F2003/0417 , B01F2003/04297 , B01F2003/04333 , B01F2003/04368 , Y10T137/0329
摘要： The invention relates to a sparger for introducing a gas or gas mixture into a liquid and to a method for sparging liquids. The sparger according to the invention comprises a cavity, a gas inlet for routing a gas into the cavity and two or more faces, which are or can be pressed onto one another in a positive fashion such that a gas pressed into the cavity through the gas inlet escapes through the gaps occurring between the pressed together faces.
摘要翻译： 本发明涉及一种用于将气体或气体混合物引入液体的喷射器和用于喷射液体的方法。 根据本发明的分布器包括空腔，用于将气体引导到空腔中的气体入口和两个或更多个面，这两个或更多个面可以或可以以积极的方式彼此压紧，使得通过气体压入空腔中的气体 入口通过压制在一起的面之间的间隙逸出。
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公开(公告)号：US20090134876A1
公开(公告)日：2009-05-28
申请号：US12290419
申请日：2008-10-30
CPC分类号： G01R33/3635 , G01R33/3415
摘要： Devices, systems, methods, and other embodiments associated with magnetic resonance imaging (MRI) are described. In one embodiment, an apparatus includes an RF coil for use in multi-nuclear excitation in magnetic resonance imaging (MRI). The RF coil includes a set of two or more L-C coils. Members of the set of two or more L-C coils have individual resonance frequencies. An RF amplifier is placed near the RF coil. The RF amplifier is controllable to selectively produce the individual resonance frequency of a member of the set of two or more L-C coils based, at least in part, on a digital input provided to the RF amplifier.
摘要翻译： 描述了与磁共振成像（MRI）相关联的装置，系统，方法和其它实施例。 在一个实施例中，一种装置包括用于磁共振成像（MRI）中的多核激励的RF线圈。 RF线圈包括一组两个或更多个L-C线圈。 两组或更多L-C线圈组的成员具有各自的共振频率。 RF放大器放置在RF线圈附近。 至少部分地基于提供给RF放大器的数字输入，RF放大器是可控制的，以选择性地产生两组或更多L-C线圈的组件的单独谐振频率。
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公开(公告)号：US20080122443A1
公开(公告)日：2008-05-29
申请号：US11605780
申请日：2006-11-28
申请人： Ulrich Fontius , Rudi Baumgartl , Franz Schmitt
发明人： Ulrich Fontius , Rudi Baumgartl , Franz Schmitt
IPC分类号： G01R33/36
CPC分类号： G01R33/3415 , G01R33/36 , G01R33/3607 , G01R33/5612
摘要： In a magnetic resonance system and an operating method therefor, a number of independently operable radio frequency signal generator modules are provided or respectively connected to radio frequency coils. A control unit provides a synchronization signal to each of the radio frequency signal generator modules to selectively operate the modules to achieve different types of signal transmission. One of the radio frequency signal generator modules can serve as a master module, that receives the synchronization signal directly from the control unit, and supplies the synchronization signal to the other modules, functioning as slave modules.
摘要翻译： 在磁共振系统及其操作方法中，多个可独立操作的射频信号发生器模块被提供或分别连接到射频线圈。 控制单元向每个射频信号发生器模块提供同步信号以选择性地操作模块以实现不同类型的信号传输。 射频信号发生器模块之一可以用作主模块，其从控制单元直接接收同步信号，并将同步信号提供给作为从模块的其他模块。
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公开(公告)号：US06450940B1
公开(公告)日：2002-09-17
申请号：US09446878
申请日：2000-08-08
申请人： Michael Moritz , Franz Schmitt , Peter Schweighofer , Peter Havel
发明人： Michael Moritz , Franz Schmitt , Peter Schweighofer , Peter Havel
IPC分类号： A61N100
摘要： A magnetic stimulation apparatus for triggering action potentials, particularly in more deeply disposed, neuro-muscular tissue of a patient as well, has at least one stimulation coil that has terminals connected to the output of a current-generating unit offers greater degrees of freedom in the selection of the current pulse shapes because the current-generating unit provides current pulses generated in non-resonant fashion for the stimulation coil.
摘要翻译： 用于触发动作电位的磁刺激装置，特别是在患者的更深层次的神经肌肉组织中也具有至少一个刺激线圈，其具有连接到电流产生单元的输出的端子提供更大的自由度 由于电流产生单元以非谐振方式为刺激线圈提供电流脉冲，所以选择当前脉冲形状。
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公开(公告)号：US5939884A
公开(公告)日：1999-08-17
申请号：US839900
申请日：1997-04-18
申请人： James W. Goldfarb , Franz Schmitt
发明人： James W. Goldfarb , Franz Schmitt
CPC分类号： G01R33/3621 , G01R33/565
摘要： In a method for identifying spikes in magnetic resonance signals obtained in magnetic resonance tomography, a magnetic resonance signal is obtained and is high-pass filtered. A statistical evaluation of the high-pass filtered magnetic resonance signal is then undertaken to determine whether the high-pass filtered magnetic resonance signal contains spikes which can be differentiated from a noise signal. If so, such spikes are identified, and can be removed from the raw data so that they do not contribute to image artifacts.
摘要翻译： 在用于识别在磁共振断层摄影中获得的磁共振信号中的尖峰的方法中，获得磁共振信号并进行高通滤波。 然后进行高通滤波磁共振信号的统计评估，以确定高通滤波磁共振信号是否包含可以与噪声信号区别的尖峰。 如果是这样，则可以识别这样的尖峰，并且可以从原始数据中移除，使得它们不对图像伪像有贡献。
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27.发明授权Powder inhaler having dispersing, discharge, and dwell-time chambers, along with an acceleration channel 失效具有分散，排出和停留时间的粉末吸入器以及加速通道
公开(公告)号：US5435301A
公开(公告)日：1995-07-25
申请号：US153708
申请日：1993-11-17
CPC分类号： A61M15/0065 , A61M15/0015 , A61M2202/064 , A61M2206/16
摘要： The powder inhaler is based on a supply container (3) for the drug, which supply container is partially or completely closed off at its lower end by a rotatable or displaceable, manually actuated metering plate (4) for the repeated reception and delivery of a predetermined, reproducible quantity of the drug from the container (3), and of a mouthpiece (14) for inhaling, upstream of which a dispersing chamber (12) is connected. The metering plate (4) is provided with at least one depression (5) which is filled with the drug on actuation of the inhaler. Seen in the flow direction, an acceleration channel is arranged ahead of the dispersing chamber (12), which acceleration channel (8) partially covers the metering plate (4) with part of its longitudinal surface and opens out tangentially into a cylindrical dwell-time chamber (9). The dwell-time chamber (9) is, in turn, connected via a central outlet (10) of smaller diameter than the cylindrical dwell-time chamber (9) to a circular discharge chamber (11 ) which the dispersing chamber ( 12) adjoins tangentially.
摘要翻译： 粉末吸入器基于用于药物的供应容器（3），其供应容器在其下端部分或完全地通过可旋转或可位移的手动致动计量板（4）部分或完全封闭，用于重复接收和递送 来自容器（3）的预定量的可重复使用的药物和用于吸入的吸口（14），其上连接有分散室（12）。 计量板（4）设置有至少一个在吸入器致动时填充有药物的凹陷（5）。 在流动方向上看到，加速通道布置在分散室（12）的前方，该加速通道（8）部分地覆盖计量板（4），其部分纵向表面以切向方式打开成圆柱形停留时间 室（9）。 停留时间室（9）又通过比圆柱形停留时间室（9）更小直径的中心出口（10）连接到分散室（12）邻接的圆形排出室（11） 切向
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28.发明授权Pulse sequence for operating a nuclear magnetic resonance tomography apparatus for producing images with different T.sub.2 contrast 失效用于操作用于产生具有不同T2对比度的图像的核磁共振断层摄影装置的脉冲序列
公开(公告)号：US4901020A
公开(公告)日：1990-02-13
申请号：US327891
申请日：1989-03-23
申请人： Ralf Ladebeck , Hubertus Fischer , Franz Schmitt
发明人： Ralf Ladebeck , Hubertus Fischer , Franz Schmitt
摘要： A pulse sequence is disclosed for operating a nuclear magnetic resonance tomography apparatus for producing images having different T.sub.2 contrast. A signal for the gradient-echo imaging is first acquired after excitation of the nuclei subsequently, the magnetization, which is already prepared for imaging, is refocused by a 180.degree. radio-frequency pulse, and a second echo is measured in the presence of a readout gradient. Independent images having different T.sub.2 contrast can be reconstructed with the gradient echo and with the spin echo. It is thus possible to simultaneously measure a gradient echo image having a significantly lower T.sub.2 contrast during the measuring time for a spin echo image.
摘要翻译： 公开了用于操作用于产生具有不同T2对比度的图像的核磁共振断层摄影装置的脉冲序列。 梯度回波成像的信号首先在核心激发之后被采集，已经准备好用于成像的磁化被180度射频脉冲重新聚焦，并且在存在下测量第二回波 读出梯度。 可以用梯度回波和自旋回波重建具有不同T2对比度的独立图像。 因此，可以在自旋回波图像的测量时间期间同时测量具有显着较低T2对比度的梯度回波图像。
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公开(公告)号：US4211970A
公开(公告)日：1980-07-08
申请号：US910557
申请日：1978-05-30
摘要： The water content of electrically non-conductive powders, granulates, pastes and fibrous materials may be measured on the basis of microwave absorption. A frequency-modulated microwave oscillator supplies a closed multimode measuring resonator charged with the sample in a transmission arrangement. The sample charged into a container almost completely fills the multimode resonator. The sample container is rotatable about its longitudinal axis. A substantial homogeneity of the field distribution in the sample is thus obtained so that even in the case of variations in the bulk density, accurate measurements are still possible.
摘要翻译： 非导电粉末，颗粒，糊剂和纤维材料的含水量可以基于微波吸收来测量。 调频微波振荡器以传输装置提供带有样品的闭合多模测量谐振器。 充入容器中的样品几乎完全填充多模谐振器。 样品容器可围绕其纵向轴线旋转。 因此，获得样品中的场分布的实质均匀性，使得即使在体积密度的变化的情况下，仍然可以进行精确的测量。
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公开(公告)号：US20150077108A1
公开(公告)日：2015-03-19
申请号：US14481596
申请日：2014-09-09
申请人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
发明人： Holger Adolf , Thomas Benner , Hans-Peter Fautz , Jörg Ulrich Fontius , Rene Gumbrecht , Franz Schmitt
CPC分类号： G01R33/543 , G01R33/36 , G01R33/5659
摘要： The embodiments relate to methods for measurement of RF excitation pulses by a magnetic resonance device including the following acts: (1) sending of an RF excitation pulse by a radio-frequency system of the magnetic resonance device, (2) triggering of a receive event for capturing the RF excitation pulse by the control device of the magnetic resonance device, and (3) capturing of the sent RF excitation pulse in the form of excitation data by the radio frequency system. In certain embodiments, the excitation data is used for checking process execution sequences.
摘要翻译： 实施例涉及通过磁共振装置测量RF激励脉冲的方法，包括以下动作：（1）通过磁共振装置的射频系统发送RF激励脉冲，（2）触发接收事件 用于通过磁共振装置的控制装置捕获RF激励脉冲，以及（3）通过射频系统以激励数据的形式捕获发送的RF激励脉冲。 在某些实施例中，激励数据用于检查过程执行序列。
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