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。

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。

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。

公开(公告)号：US20060266947A1

公开(公告)日：2006-11-30

申请号：US11438209

申请日：2006-05-23

申请人： Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Sebastian Schmidt ,  Markus Vester

发明人： Robert Krieg ,  Rainer Kuth ,  Ralf Ladebeck ,  Ralph Oppelt ,  Sebastian Schmidt ,  Markus Vester

IPC分类号： G01T1/166

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

摘要： A method is disclosed for determining positron emission measurement information in the context of positron emission tomography. The method includes carrying out a positron emission measurement, in a body area of a subject to be examined, to record positron emission measurement information with point resolution and determining a time frame of the measurement by, at the same time, generating images of the body area to be examined with a relatively higher time resolution and with point-resolved image data, using a second imaging method. Further, a local shift of points of individual images of the second imaging method is determined, caused by movement processes of the subject to be examined, and as a function thereof, of the positron emission measurement information for at least a part of the measurement period and of the body area to be examined. Finally, the positron emission measurement information is adjusted as a function of the determined shift.

摘要翻译： 公开了一种用于在正电子发射断层摄影的背景下确定正电子发射测量信息的方法。 该方法包括在待检查对象的身体区域中进行正电子发射测量，以记录具有点分辨率的正电子发射测量信息，并且通过同时生成身体的图像来确定测量的时间范围 使用第二成像方法以相对较高的时间分辨率和点分辨图像数据进行检查的区域。 此外，由第二成像方法的各个图像的点的局部偏移由待检查对象的移动处理确定，并且作为其功能，确定至少部分测量周期的正电子发射测量信息 以及要检查的身体区域。 最后，调整正电子发射测量信息作为确定的位移的函数。

公开(公告)号：US07119543B2

公开(公告)日：2006-10-10

申请号：US10909794

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： G01V3/00

CPC分类号： G01R33/3607 ,  G01R33/3614

摘要： A generator device for a magnetic resonance excitation signal has a signal divider that divides an input signal supplied to it via an input element into at least two sub-signals and supplies them to amplification stages. The amplification stages amplify the respective sub-signals to produce amplified signals and supply the amplified signals to a signal combiner that combines them to form an aggregate signal, which is made externally available via an output element. Sensor devices that precede the signal divider and the signal combiner, acquire a reference signal that corresponds to the input signal and actual signals that correspond to the amplified signals and supply them to a control device. The control device acts on at least one of the amplification stages to cause the amplified signals to exhibit a predetermined amplitude ratio and a predetermined phase relation relative to one another.

摘要翻译： 用于磁共振激励信号的发生器装置具有信号分配器，其将经由输入元件提供给其的输入信号分成至少两个子信号并将其提供给放大级。 放大级放大相应的子信号以产生放大的信号，并将放大的信号提供给组合它们的信号组合器，以形成聚合信号，该信号通过输出元件在外部可用。 在信号分频器和信号组合器之前的传感器装置，获取对应于输入信号的参考信号和对应于放大信号的实际信号并将其提供给控制装置。 控制装置作用于至少一个放大级，以使放大的信号相对于彼此呈现预定的幅度比和预定的相位关系。

公开(公告)号：US07098661B2

公开(公告)日：2006-08-29

申请号：US10957435

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： G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/34076 ,  G01R33/385 ,  G01R33/56518

摘要： A magnetic resonance device with a cavity and with a basic field magnet and a gradient coil system, with the basic field magnet having a cavity that is bounded by an electrically conductive boundary surface of the basic field magnet and in which the gradient coil system is arranged, containing the following features: the gradient coil system has at least two structurally separate units with a clearance between them, with each of the units being enclosed by the high-frequency shield; the high-frequency shield has a short clearance from the boundary surface such that, because of the capacitive coupling between the high-frequency shield and the boundary surface, the high-frequency shield has a high-frequency short circuit to the boundary surface, so that the boundary surface is a surface that is always available for the high-frequency return flow.

摘要翻译： 一种具有空腔并具有基本场磁体和梯度线圈系统的磁共振装置，其中基本场磁体具有由基本场磁体的导电边界面界定的空腔，其中布置有梯度线圈系统 包含以下特征：梯度线圈系统具有至少两个结构上分离的单元，它们之间具有间隙，每个单元由高频屏蔽包围; 高频屏蔽与边界面间隔很短，由于高频屏蔽与边界面之间的电容耦合，高频屏蔽层与边界面有高频短路，所以 边界面是始终可用于高频回流的表面。

公开(公告)号：US20050046476A1

公开(公告)日：2005-03-03

申请号：US10909794

申请日：2004-07-30

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

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

IPC分类号： G01R33/20 ,  A61B5/055 ,  G01R33/36 ,  H03F3/68

CPC分类号： G01R33/3607 ,  G01R33/3614

摘要： A generation device for a magnetic resonance excitation signal has a signal divider that divides an input signal supplied to it via an input element into at least two sub-signals and supplies them to amplification stages. The amplification stages amplify the respective sub-signals to produce signals and supply the amplified signals to a signal combiner that combines them to form an aggregate signal, which is made externally available via an output element. Sensor devices that precede the signal divider and the signal combiner, acquire a reference signal that corresponds to the input signal and actual signals that correspond to the amplified signals and supply them to a control device. The control device acts on at least one of the amplification stages to cause the amplified signals to exhibit a predetermined amplitude ratio and a predetermined phase relation relative to one another.

摘要翻译： 用于磁共振激励信号的发生装置具有信号分配器，其将经由输入元件提供给其的输入信号分成至少两个子信号，并将其提供给放大级。 放大级放大相应的子信号以产生信号，并将放大的信号提供给组合它们的信号组合器，以形成聚合信号，该信号通过输出元件在外部可用。 在信号分频器和信号组合器之前的传感器装置，获取对应于输入信号的参考信号和对应于放大信号的实际信号并将其提供给控制装置。 控制装置作用于至少一个放大级，以使放大的信号相对于彼此呈现预定的幅度比和预定的相位关系。

公开(公告)号：US20050035762A1

公开(公告)日：2005-02-17

申请号：US10903643

申请日：2004-07-30

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

发明人： Adam Albrecht ,  Horst Krockel ,  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 amplifies 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。 放大器利用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：US06714093B2

公开(公告)日：2004-03-30

申请号：US10262329

申请日：2002-10-01

申请人： Ralph Oppelt ,  Markus Vester

发明人： Ralph Oppelt ,  Markus Vester

IPC分类号： H04B164

CPC分类号： H04B1/64

摘要： In a dynamics compressor, an analog signal to be compressed is supplied to a first amplifier stage as an input signal, and the output signal thereof is supplied to the next amplifier stage as an input signal, and so on for a number of successive amplifier stages. Each amplifier stage amplifies its input signal with a stage amplification until it reaches a stage limit level. The analog signal and the respective output signals of the amplifier stages are summed in a summation stage to form a sum signal. Above a minimal level, the magnitude of the curve of the sum signalroughly corresponds to an exponent characteristic of the magnitude of the analog signal.

摘要翻译： 在动态压缩器中，要被压缩的模拟信号作为输入信号被提供给第一放大器级，并且其输出信号作为输入信号提供给下一个放大器级，并且等于多个连续的放大器级 。 每个放大器级用级放大放大其输入信号，直到达到级限。 放大器级的模拟信号和各个输出信号在求和级相加以形成和信号。 高于最小电平，总和信号的曲线的大小对应于模拟信号幅度的指数特性。

公开(公告)号：US6160453A

公开(公告)日：2000-12-12

申请号：US220111

申请日：1998-12-23

申请人： Peter Feld ,  Horst Kroeckel ,  Markus Vester

发明人： Peter Feld ,  Horst Kroeckel ,  Markus Vester

IPC分类号： H03F3/26 ,  H03F3/04

CPC分类号： H03F3/265

摘要： A high-frequency power amplifier has a high-frequency input, a high-frequency output and at least one power transistor connected therebetween. The power transistor has a first electrode serving as a control input, a cooling terminal connected to a second electrode and a third electrode. The third electrode is connected to a high-frequency reference potential conductor and the high-frequency reference potential conductor is connected in terms of high-frequency to the second electrode. An input signal applied to the high-frequency input is coupled out as an output signal at the high-frequency output.

摘要翻译： 高频功率放大器具有连接在其间的高频输入，高频输出和至少一个功率晶体管。 功率晶体管具有用作控制输入的第一电极，连接到第二电极和第三电极的冷却端子。 第三电极连接到高频参考电位导体，高频参考电位导体以高频率连接到第二电极。 施加到高频输入的输入信号作为高频输出端的输出信号被耦合出来。