公开(公告)号：US06020740A

公开(公告)日：2000-02-01

申请号：US941052

申请日：1997-09-30

申请人： Wolfgang Renz ,  Bernd Stoeckel

发明人： Wolfgang Renz ,  Bernd Stoeckel

IPC分类号： G01R33/34 ,  G01R33/422 ,  G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/422

摘要： An antenna arrangement having at least a first and a second conductor section (2, 2a, 8) that are connected to one another via a capacitor arrangement (6, 6a, 6b). During operation, the first conductor section (2, 2a) exhibit an alternating first potential and the second conductor section (8) exhibits an alternating second, opposite potential with respect to a reference potential. A shielding against electrical fields is arranged between the antenna conductor arrangement and the imaging volume (12). The shielding (16) has no electrical connection to the reference potential. The shielding (16) has a first overlap region (18) with the first conductor section (2, 2a) and has a second overlap region (20) with the second conductor section (8). The relationship of the two overlap regions (18, 20) to one another is selected such that the potential of the shielding (16) assumes reference potential during operation.

摘要翻译： 一种具有至少第一和第二导体部分（2,2a，8）的天线装置，其经由电容器装置（6a，6b）彼此连接。 在操作期间，第一导体部分（2,2a）表现出交替的第一电位，并且第二导体部分（8）相对于参考电位呈现交替的第二相反电势。 在天线导体装置和成像体积（12）之间布置有防止电场的屏蔽。 屏蔽（16）与参考电位没有电连接。 屏蔽（16）具有与第一导体部分（2,2a）的第一重叠区域（18），并且具有与第二导体部分（8）的第二重叠区域（20）。 选择两个重叠区域（18,20）之间的关系，使得屏蔽（16）的电位在操作期间呈现参考电位。

公开(公告)号：US09121893B2

公开(公告)日：2015-09-01

申请号：US11532665

申请日：2006-09-18

申请人： Matthias J. Schmand ,  Ron Grazioso ,  Ronald Nutt ,  Robert E. Nutt ,  Nan Zhang ,  James Luke Corbeil ,  Ralf Ladebeck ,  Markus Vester ,  Günter Schnur ,  Wolfgang Renz ,  Hubertus Fischer ,  Bernd J. Pichler

发明人： Matthias J. Schmand ,  Ron Grazioso ,  Ronald Nutt ,  Robert E. Nutt ,  Nan Zhang ,  James Luke Corbeil ,  Ralf Ladebeck ,  Markus Vester ,  Günter Schnur ,  Wolfgang Renz ,  Hubertus Fischer ,  Bernd J. Pichler

IPC分类号： G01T1/164 ,  G01T1/166 ,  G01R33/28 ,  G01R33/26 ,  G01R33/381 ,  G01R33/48 ,  G01T1/16 ,  G01T1/29 ,  A61B6/03 ,  A61B8/08

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。

公开(公告)号：US20140300355A1

公开(公告)日：2014-10-09

申请号：US14245181

申请日：2014-04-04

申请人： Hans-Peter Fautz ,  Wolfgang Renz ,  Franz Schmitt

发明人： Hans-Peter Fautz ,  Wolfgang Renz ,  Franz Schmitt

IPC分类号： G01R33/28

CPC分类号： G01R33/28 ,  G01R33/34046 ,  G01R33/3415 ,  G01R33/3664

摘要： A magnetic resonance RF field is produced in a magnetic resonance imaging system that includes a main magnetic field apparatus and an object-bearing table movable relative to the main magnetic field apparatus and on which a local coil system is arranged. The local coil system includes a plurality of transmission elements. A current location of the object-bearing table relative to the main magnetic field apparatus is established. The transmission elements are automatically connected based on the current location of the object-bearing table.

摘要翻译： 在包括主磁场装置和可相对于主磁场装置移动的对象支承台的磁共振成像系统中产生磁共振RF场，并且配置有局部线圈系统。 局部线圈系统包括多个传输元件。 建立了对象承载台相对于主磁场装置的当前位置。 传输元件根据对象承载台的当前位置自动连接。

公开(公告)号：US08653821B2

公开(公告)日：2014-02-18

申请号：US13172803

申请日：2011-06-29

申请人： Wolfgang Renz ,  Karsten Wicklow

发明人： Wolfgang Renz ,  Karsten Wicklow

IPC分类号： G01V3/00

CPC分类号： G01R33/422 ,  G01R33/4802

摘要： The present embodiments relate to a device and a method for attenuating a high-frequency field of a magnetic resonance tomography system, where at least one attenuation element attenuating high-frequency fields is provided outside a magnetic resonance tomography field of view.

摘要翻译： 本实施例涉及用于衰减磁共振断层摄影系统的高频场的装置和方法，其中至少一个衰减高频场的衰减元件设置在磁共振断层摄影视野外。

公开(公告)号：US08436617B2

公开(公告)日：2013-05-07

申请号：US12698282

申请日：2010-02-02

申请人： Wolfgang Renz ,  Anke Weissenborn

发明人： Wolfgang Renz ,  Anke Weissenborn

IPC分类号： G01V3/00 ,  G01R33/20 ,  A61B5/05

CPC分类号： G01R33/287 ,  A61B5/055 ,  A61B2017/00911 ,  G01R33/288

摘要： A compensation device to reduce the electromagnetic field load due to the presence of a medical intervention apparatus in magnetic resonance examinations, has: a control device that has a radio-frequency input and a radio-frequency output, an injection device that is connected with the radio-frequency output and that injects the radio-frequency power delivered by the control device into the medical intervention apparatus, a measurement device that measures at least one electrical variable at the intervention apparatus, and a regulator that is connected with the control device and the measurement device. The regulator adjusts the control device to deliver the radio-frequency power so that the electrical variable at the intervention apparatus is reduced.

摘要翻译： 一种用于在磁共振检查中由于医疗介入装置的存在而减小电磁场负荷的补偿装置具有：具有射频输入和射频输出的控制装置，与 射频输出，其将由控制装置输送的射频功率注入到医疗介入装置中，测量装置，其在介入装置处测量至少一个电变量;以及调节器，其与控制装置和 测量装置。 调节器调节控制装置以传递射频功率，使得介入装置的电变量减小。

公开(公告)号：US08436615B2

公开(公告)日：2013-05-07

申请号：US12832267

申请日：2010-07-08

申请人： Wolfgang Renz ,  Karsten Wicklow

发明人： Wolfgang Renz ,  Karsten Wicklow

IPC分类号： G01R33/00 ,  A61B5/055

CPC分类号： G01R33/345 ,  G01R33/3453 ,  G01R33/365 ,  G01R33/3657 ,  G01R33/3685

摘要： A waveguide antenna assembly for a magnetic resonance tomography apparatus, particularly a waveguide antenna assembly that can be detuned for an operation with local coils, is composed of multiple metal surfaces connected by diodes respectively located between the metal surfaces. Only when the diodes are through-connected between these metal surfaces are the surfaces connected with one another in terms of RF signals via these diodes, so the assembly operates as a waveguide antenna. When the diodes are disabled between these metal surfaces, the surfaces are unconnected with one another for RF signals.

摘要翻译： 用于磁共振断层摄影装置的波导天线组件，特别是能够与本地线圈进行操作而失谐的波导天线组件，由分别位于金属表面之间的二极管连接的多个金属表面组成。 只有当二极管连接在这些金属表面之间时，这些表面是通过这些二极管以RF信号相互连接的表面，因此组件作为波导天线工作。 当在这些金属表面之间禁用二极管时，表面彼此不连接用于RF信号。

公开(公告)号：US08249688B2

公开(公告)日：2012-08-21

申请号：US13302331

申请日：2011-11-22

申请人： Jan Bollenbeck ,  Wolfgang Renz

发明人： Jan Bollenbeck ,  Wolfgang Renz

IPC分类号： A61B5/055

CPC分类号： G01R33/36 ,  G01R33/28 ,  G01R33/34007 ,  G01R33/34084 ,  G01R33/3415

摘要： In a method to affix RF coils (in particular local coils) on a patient in examinations with a magnetic resonance apparatus, a horizontal board accommodates the patient for a magnetic resonance examination to be implemented, an RF coil that has coil electronics is affixed with a fastening strap on the patient, and the fastening strap has a connection cable integrated therewith. The coil electronics are supplied with energy via the integrated connection cable.

摘要翻译： 在用磁共振装置进行检查的情况下将RF线圈（特别是局部线圈）固定在患者身上的方法中，水平板容纳患者进行磁共振检查以实施，具有线圈电子器件的RF线圈固定有 紧固带在患者身上，并且紧固带具有与其一体的连接电缆。 线圈电子设备通过集成连接电缆供电。

公开(公告)号：US08073525B2

公开(公告)日：2011-12-06

申请号：US11508179

申请日：2006-08-23

申请人： Ralf Ladebeck ,  Wolfgang Renz

发明人： Ralf Ladebeck ,  Wolfgang Renz

IPC分类号： A61B5/05

CPC分类号： G01R33/481 ,  A61B6/037 ,  G01T1/1603 ,  G01T1/2985

摘要： A combined PET/MRT unit is disclosed that includes a PET detector which is reduced by comparison with the prior art, and that consists, for example, of a PET detector with a polygonal arrangement of the detector elements or with a PET detector ring. The PET detector is reduced in an axial direction by comparison with the detectors of the prior art, as a result of which the costs for producing the expensive PET detectors are lowered. The reduction of the PET detector is possible because the MR measurement usually lasts longer than the PET measurement, and so a reduced PET detector can be used for the temporally sequential recording of a number of PET tomograms by mechanical displacement of the PET detector. Since the MR measurement lasts substantially longer, this mechanical displacement does not lead to a lengthening of the measuring time. The invention also relates to methods for simultaneously recording MR and PET tomograms in which the PET/MRT units according to the invention are used.

摘要翻译： 公开了一种组合的PET / MRT单元，其包括与现有技术相比减少的PET检测器，并且其包括例如具有检测器元件的多边形布置的PET检测器或PET检测器环。 与现有技术的检测器相比，PET检测器在轴向方向上减小，结果生产昂贵的PET检测器的成本降低。 PET检测器的减少是可能的，因为MR测量通常比PET测量持续时间更长，因此，通过PET检测器的机械位移，可以使用减少的PET检测器来进行多个PET断层图像的时间顺序记录。 由于MR测量持续时间更长，所以这种机械位移不会导致测量时间的延长。 本发明还涉及用于同时记录根据本发明的PET / MRT单元的MR和PET断层图像的方法。

公开(公告)号：US07791344B2

公开(公告)日：2010-09-07

申请号：US12238848

申请日：2008-09-26

申请人： Juergen Nistler ,  Wolfgang Renz

发明人： Juergen Nistler ,  Wolfgang Renz

IPC分类号： G01V3/00

CPC分类号： G01R33/3607 ,  G01R33/5612 ,  G01R33/5659

摘要： A radio-frequency transmission system for a magnetic resonance system has a radio-frequency amplifier and a signal splitter with two inputs and two outputs. The signal splitter is fashioned so that the power of a radio-frequency signal provided at one of the two inputs is divided between the two outputs. A first input the two inputs of the signal splitter is thereby coupled with the output of the radio-frequency amplifier, and the two outputs of the signal splitter respectively serve for connection to different inputs of a transmission antenna of the magnetic resonance system in order to feed the output signals present at the two outputs of the signal splitter into the transmission antenna. The second input of the signal splitter is terminated with a terminating resistor arrangement with a variable reflection factor.

摘要翻译： 用于磁共振系统的射频传输系统具有射频放大器和具有两个输入和两个输出的信号分配器。 信号分离器被形成为使得在两个输入之一处提供的射频信号的功率在两个输出之间被划分。 因此，信号分离器的两个输入的第一输入由此与射频放大器的输出耦合，并且信号分路器的两个输出端分别用于连接到磁共振系统的发射天线的不同输入，以便 将存在于信号分离器的两个输出端的输出信号馈送到发送天线。 信号分离器的第二输入端以具有可变反射系数的终端电阻器结构终止。

公开(公告)号：US20100194391A1

公开(公告)日：2010-08-05

申请号：US12698282

申请日：2010-02-02

申请人： Wolfgang Renz ,  Anke Weissenborn

发明人： Wolfgang Renz ,  Anke Weissenborn

IPC分类号： G01R33/44

CPC分类号： G01R33/287 ,  A61B5/055 ,  A61B2017/00911 ,  G01R33/288

摘要： A compensation device to reduce the electromagnetic field load due to the presence of a medical intervention apparatus in magnetic resonance examinations, has: a control device that has a radio-frequency input and a radio-frequency output, an injection device that is connected with the radio-frequency output and that injects the radio-frequency power delivered by the control device into the medical intervention apparatus, a measurement device that measures at least one electrical variable at the intervention apparatus, and a regulator that is connected with the control device and the measurement device. The regulator adjusts the control device to deliver the radio-frequency power so that the electrical variable at the intervention apparatus is reduced.

摘要翻译： 一种用于在磁共振检查中由于医疗介入装置的存在而减小电磁场负荷的补偿装置具有：具有射频输入和射频输出的控制装置，与 射频输出，其将由控制装置输送的射频功率注入到医疗介入装置中，测量装置，其在介入装置处测量至少一个电变量;以及调节器，其与控制装置和 测量装置。 调节器调节控制装置以传递射频功率，使得介入装置的电变量减小。