公开(公告)号：US20100074365A1

公开(公告)日：2010-03-25

申请号：US12585373

申请日：2009-09-14

申请人： Ralf Ladebeck ,  Markus Vester

发明人： Ralf Ladebeck ,  Markus Vester

IPC分类号： H04B15/00 ,  H04B1/10

CPC分类号： G01T1/1603 ,  A61B5/0002 ,  A61B5/055 ,  A61B5/7257 ,  A61B6/037 ,  A61B6/5247 ,  G01D3/036 ,  G01R33/481 ,  G01T1/17

摘要： A method and a transmission system are disclosed for the transmission of wanted signals between a sensor and an evaluation unit. In order to suppress interference to the sensor signals due to external interference sources as far as possible, at least one embodiment of the inventive system has at least one signal receiver with the sensor for detecting a wanted signal and a signal processing device for conditioning the wanted signal, at whose output a mixed signal with a wanted signal component and an interference signal component from at least one interference source are present; an interference source signal input for detecting at least one interference source signal of the at least one interference source; a filter device for reconstructing the interference signal component as a function of the at least one interference source signal; and a subtractor for eliminating interference superimposed on the wanted signal.

摘要翻译： 公开了用于在传感器和评估单元之间传输所需信号的方法和传输系统。 为了尽可能地抑制由于外部干扰源对传感器信号的干扰，本发明系统的至少一个实施例具有至少一个具有用于检测有用信号的传感器的信号接收器和用于调节所需信号的信号处理装置 信号，其输出具有有用信号分量的混合信号和来自至少一个干扰源的干扰信号分量; 用于检测所述至少一个干扰源的至少一个干扰源信号的干扰源信号输入; 滤波器装置，用于根据所述至少一个干扰源信号重建所述干扰信号分量; 以及用于消除叠加在有用信号上的干扰的减法器。

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。

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。

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。

公开(公告)号：US07417433B2

公开(公告)日：2008-08-26

申请号：US11436211

申请日：2006-05-17

申请人： Oliver Heid ,  Markus Vester

发明人： Oliver Heid ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： A61B5/055 ,  G01R33/3415 ,  G01R33/3692 ,  H03F7/04

摘要： In a method for implementation of a magnetic resonance examination, and a magnetic resonance apparatus, and an array for acquisition of magnetic resonance signals, and a magnetic resonance signal at a magnetic resonance frequency are acquired from an examination region with an array of frequency conversion units after an RF excitation and are radiated as frequency-converted signals. The resulting signal field is acquired by a number of reception antennas of a second antenna array, which are arranged at different spatial positions and thus allow a spatial resolution of the frequency-converted signals. The acquired acquisition signals are used for image reconstruction.

摘要翻译： 在用于执行磁共振检查的方法中，并且从具有频率转换单元阵列的检查区域获取磁共振检查的方法和磁共振装置以及用于获取磁共振信号的阵列和磁共振频率的磁共振信号 在RF激励之后并且被辐射为频率转换信号。 所得到的信号场由第二天线阵列的多个接收天线获取，第二天线阵列被布置在不同的空间位置，从而允许频率转换信号的空间分辨率。 获取的采集信号用于图像重建。

公开(公告)号：US20080197849A1

公开(公告)日：2008-08-21

申请号：US11993932

申请日：2006-09-28

申请人： Oliver Heid ,  Markus Vester

发明人： Oliver Heid ,  Markus Vester

IPC分类号： G01R33/28 ,  A61B5/055

CPC分类号： G01R33/56375 ,  G01R33/3415 ,  G01R33/3642

摘要： A magnetic resonance system has a base body embodying a magnet system that generates magnetic fields in an excitation region on the base body, a patient bed that is movable in a travel direction through a travel region relative to the base body, the patient bed receiving an examination subject thereon to move the examination subject through the examination region, a local coil that is operable in combination with the magnet system to generate magnetic resonance signals in the examination subject and to detect the magnetic resonance signals resulting therefrom, and an evaluation device that evaluates the magnetic resonance signals detected by the local coil. A base body coupling element, at a predetermined base body location, is connected to the evaluation device. A patient bed coupling element, located at a predetermined patient bed location, is connected to the local coil. The base body and patient bed coupling elements feed the magnetic resonance signals to the evaluation device when, and as long as, the patient bed has moved by a predetermined segment of the travel region.

摘要翻译： 磁共振系统具有体现磁体系统的基体，该磁体系统在基体上的激发区域中产生磁场，患者床可相对于基体在行进方向上通过行进区域移动，患者床接收 检查对象通过检查区域移动检查对象，本地线圈，其可与磁体系统组合操作以在检查对象中产生磁共振信号，并检测由此产生的磁共振信号，以及评估装置，其评估 由本地线圈检测到的磁共振信号。 在预定的基体位置处的基体连接元件连接到评估装置。 位于预定患者床位置处的患者床联接元件连接到局部线圈。 当患者床已经移动了行进区域的预定段时，基体和患者床联接元件将磁共振信号馈送到评估装置。

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。

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。