公开(公告)号：US09134390B2

公开(公告)日：2015-09-15

申请号：US13436576

申请日：2012-03-30

申请人： Daniel Evers ,  Klaus Huber ,  Florian Poprawa ,  Christina Schindler ,  Markus Vester ,  Jörg Zapf

发明人： Daniel Evers ,  Klaus Huber ,  Florian Poprawa ,  Christina Schindler ,  Markus Vester ,  Jörg Zapf

IPC分类号： G01V3/00 ,  G01R33/422 ,  G01R33/3415 ,  G01R33/36

CPC分类号： G01R33/422 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/3692

摘要： The present embodiments relate to a magnetic resonance local coil with a receive antenna for receiving magnetic resonance signals. The magnetic resonance local coil also includes a transmission unit for transmitting magnetic resonance signal data generated on the basis of the magnetic resonance signals via a data transmit antenna of the magnetic resonance local coil to a signal data receiving unit of a magnetic resonance tomography systems. The transmission unit is provided, at least in sections, with screening with a first metal coating and a first dielectric coating.

摘要翻译： 本实施例涉及具有用于接收磁共振信号的接收天线的磁共振局部线圈。 磁共振局部线圈还包括传输单元，用于将通过磁共振局部线圈的数据发射天线的磁共振信号产生的磁共振信号数据发送到磁共振断层摄影系统的信号数据接收单元。 传动单元至少在分段上设置有第一金属涂层和第一介电涂层的筛选。

公开(公告)号：US08994374B2

公开(公告)日：2015-03-31

申请号：US13432437

申请日：2012-03-28

申请人： Andre Albsmeier ,  Jan Bollenbeck ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester ,  Thomas Wuchenauer

发明人： Andre Albsmeier ,  Jan Bollenbeck ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester ,  Thomas Wuchenauer

IPC分类号： G01V3/00 ,  G01R33/36 ,  G01R33/3415

CPC分类号： G01R33/3692 ,  G01R33/3415 ,  G01R33/3621

摘要： A local coil system for a magnetic resonance system has a local coil for detecting MR response signals and a transmitter for wirelessly transmitting signals to the magnetic resonance system. At least one pseudo random device is operable to change signals in a pseudo random fashion in order to avoid interferences in the imaging.

摘要翻译： 用于磁共振系统的局部线圈系统具有用于检测MR响应信号的本地线圈和用于将信号无线传输到磁共振系统的发射器。 至少一个伪随机设备可操作以伪随机方式改变信号，以避免成像中的干扰。

公开(公告)号：US20150028870A1

公开(公告)日：2015-01-29

申请号：US14349419

申请日：2012-09-12

申请人： Chih-Chung Chen ,  Klaus Huber ,  Johannes Reinschke ,  Claus Seisenberger ,  Markus Vester ,  Christian Wünsch

发明人： Chih-Chung Chen ,  Klaus Huber ,  Johannes Reinschke ,  Claus Seisenberger ,  Markus Vester ,  Christian Wünsch

IPC分类号： G01R33/54 ,  A61B5/055 ,  A61B5/00 ,  G01R33/36

CPC分类号： G01R33/543 ,  A61B5/055 ,  A61B5/7225 ,  A61B5/7271 ,  G01R33/3614 ,  G01R33/365

摘要： A two-channel magnetic resonance tomography system is provided with a regulation circuit for an amplification system in order to be able to take into account different load situations of the MRI system in a flexible and efficient manner. It is thus possible to improve the MRI measurements greatly if the MRI system is set to the respective load situation beforehand by an idle state measurement. The adaptation may optionally also be carried out during the MRI measurement. Therefore, a multiplicity of completely different load situations may be taken into account in an optimized manner by the regulation circuit.

摘要翻译： 双通道磁共振断层摄影系统具有用于放大系统的调节电路，以便能够以灵活和有效的方式考虑到MRI系统的不同负载情况。 如果通过空闲状态测量将MRI系统预先设定为相应的负载状态，则可以大大改善MRI测量。 也可以在MRI测量期间进行适应。 因此，可以通过调节电路以优化的方式考虑多种完全不同的负载情况。

公开(公告)号：US20140292337A1

公开(公告)日：2014-10-02

申请号：US13918461

申请日：2013-06-14

申请人： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

发明人： Elfar Adalsteinsson ,  Luca Daniel ,  Bastien Guerin ,  Zohaib Mahmood ,  Markus Vester ,  Lawrence Wald

IPC分类号： G01R33/36

CPC分类号： G01R33/365 ,  G01R33/5612

摘要： A method of determining a decoupling matrix of a decoupling system for an array of coils of a parallel transmission magnetic resonance imaging (MRI) system includes obtaining impedance matrix data for the array of coils without the decoupling system, determining, based on the impedance matrix data for the array of coils, an objective function representative of deviation from a decoupled operating condition for the array of coils in which the array of coils are decoupled via the decoupling system, and defining, with a processor, a decoupling matrix representative of a set of impedances of the decoupling system with an iterative procedure that optimizes elements of the decoupling matrix to minimize the objective function and reach the decoupled operating condition.

摘要翻译： 确定并行传输磁共振成像（MRI）系统的线圈阵列的去耦系统的去耦矩阵的方法包括：获得用于没有去耦系统的线圈阵列的阻抗矩阵数据，基于阻抗矩阵数据 对于线圈阵列，表示偏离线圈阵列的去耦工作条件的目标函数，其中线圈阵列经由去耦系统去耦，并且用处理器定义代表一组线圈的去耦矩阵 解耦系统的阻抗具有优化去耦矩阵的元素以最小化目标函数并达到解耦操作条件的迭代过程。

公开(公告)号：US08766632B2

公开(公告)日：2014-07-01

申请号：US13240026

申请日：2011-09-22

申请人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

发明人： Stephan Biber ,  Jürgen Nistler ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/422 ,  G01R33/34007 ,  G01R33/3415 ,  G01R33/3642

摘要： A magnetic resonance device with a measurement chamber, an antenna arrangement that has a plurality of antenna elements arranged at least in certain areas around the measurement chamber, a gradient coil system arranged outside the antenna arrangement as seen from the measurement chamber, and a high-frequency shield system arranged between the antenna arrangement and the gradient coil system are provided. The high-frequency shield system has a reflector array with a plurality of passive reflector resonance circuits, each of which is configured such that resonance frequencies of the plurality of passive reflector resonance circuits lie below an operating magnetic resonance frequency of the magnetic resonance device and that the plurality of passive reflector resonance circuits has an inductive overall impedance.

摘要翻译： 一种具有测量室的磁共振装置，至少在测量室周围的某些区域中布置有多个天线元件的天线装置，从测量室观察时布置在天线装置外部的梯度线圈系统， 设置在天线装置和梯度线圈系统之间的频率屏蔽系统。 高频屏蔽系统具有多个无源反射器谐振电路的反射器阵列，每个被动反射器谐振电路被配置为使得多个无源反射器谐振电路的谐振频率低于磁共振装置的工作磁共振频率，并且 多个无源反射器谐振电路具有感应整体阻抗。

公开(公告)号：US20140117990A1

公开(公告)日：2014-05-01

申请号：US14062329

申请日：2013-10-24

申请人： Yan Li Chen ,  Yu Tang ,  Markus Vester ,  Jian Min Wang ,  Zhibin Li

发明人： Yan Li Chen ,  Yu Tang ,  Markus Vester ,  Jian Min Wang ,  Zhibin Li

IPC分类号： G01R33/34

CPC分类号： G01R33/34076 ,  G01R33/288

摘要： A body coil includes a first end ring and a second end ring provided at two ends thereof. The first end ring and the second end ring are connected to each other with a plurality of legs. The first end ring or the second end ring has a structure with the current flow width in a direction parallel to the axis thereof being greater than that in a direction perpendicular to the axis thereof. Since the effective action width of the current is increased in the axial direction and the centralized flow of the current in the end ring is reduced, the local specific absorption rate of radio frequency induced by the magnetic field is therefore reduced.

摘要翻译： 身体线圈包括设置在其两端的第一端环和第二端环。 第一端环和第二端环以多个腿相互连接。 第一端环或第二端环具有在与其轴线平行的方向上的电流流动宽度大于垂直于其轴线的方向上的电流流动宽度的结构。 由于电流的有效作用宽度在轴向上增加，并且端环中的电流的集中流动减小，因此减小了由磁场引起的射频的局部比吸收率。

公开(公告)号：US08487622B2

公开(公告)日：2013-07-16

申请号：US12893286

申请日：2010-09-29

申请人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

发明人： Stephan Biber ,  Jan Bollenbeck ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： G01R33/3692 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/3621 ,  G01R33/422

摘要： In a magnetic resonance tomography local coil arrangement and a method for processing signals received thereby, at least one local coil is fashioned to receive at least one reception signal and at least one amplifier is provided that amplifies the at least one reception signal. A frequency converter generates at least one intermediate frequency signal from the at least one reception signal the intermediate frequency of the intermediate frequency signal differing from the reception signal frequency of each reception signal. An analog-digital converter converts the analog intermediate frequency signal into a digitized signal. A shielding device shields against at least radio-frequency signals, the shielding device surrounding at least the analog-digital converter. At least one frequency filter is arranged between the at least one local coil and the analog-digital converter, the frequency filter exhibiting a transmission range for signals with the intermediate frequency of an intermediate frequency signal. The digitized signal is transmitted from the local coil arrangement.

摘要翻译： 在磁共振断层摄影局部线圈装置和用于处理由此接收的信号的方法中，形成至少一个局部线圈以接收至少一个接收信号，并且提供放大至少一个接收信号的至少一个放大器。 变频器从至少一个接收信号产生至少一个中频信号，该中频信号与每个接收信号的接收信号频率不同。 模拟数字转换器将模拟中频信号转换为数字化信号。 屏蔽装置至少屏蔽射频信号，屏蔽装置至少围绕模拟数字转换器。 在至少一个本地线圈和模数转换器之间布置至少一个频率滤波器，该频率滤波器对于具有中频信号的中频的信号呈现传输范围。 数字化信号从本地线圈装置发送。

公开(公告)号：US20130082706A1

公开(公告)日：2013-04-04

申请号：US13632209

申请日：2012-10-01

申请人： Daniel Evers ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

发明人： Daniel Evers ,  Klaus Pistor ,  Florian Poprawa ,  Stefan Schwarzer ,  Markus Vester

IPC分类号： G01R33/34 ,  G01R33/54

CPC分类号： G01R33/3692 ,  A61B5/055 ,  G01R33/34

摘要： A local antenna device for transmitting magnetic resonance (MR) signals of a plurality of MR receiving antenna elements to an MR signal processing device is provided. The local antenna device includes a plurality of analog-to-digital converters for scanning the MR signals and converting the MR signals to digital MR data, and a plurality of transmitting antenna elements for wirelessly transmitting the digital MR data to the MR signal processing device by the emission of an electromagnetic field. The local antenna device includes a plurality of transmitting devices for triggering the transmitting antenna elements and a plurality of spacer elements that is arranged and embodied on the local antenna device such that at least a defined minimum emission spacing is produced between the plurality of transmitting antenna elements and articles adjoining the local antenna device in at least one direction of a principal axis of emission of the electromagnetic field.

摘要翻译： 提供了一种用于将多个MR接收天线元件的磁共振（MR）信号发送到MR信号处理装置的本地天线装置。 本地天线装置包括用于扫描MR信号并将MR信号转换为数字MR数据的多个模数转换器，以及用于通过以下方式将数字MR数据无线发送到MR信号处理装置的多个发射天线元件： 电磁场的发射。 本地天线装置包括用于触发发射天线元件和多个间隔元件的多个发射装置，所述多个间隔元件被布置和实施在本地天线装置上，使得至少在多个发射天线元件之间产生限定的最小发射间隔 以及在电磁场的发射主轴的至少一个方向上与本地天线装置相邻的物品。

公开(公告)号：US08410776B2

公开(公告)日：2013-04-02

申请号：US12585867

申请日：2009-09-28

申请人： Matthias J. Schmand ,  Markus Vester ,  Nan Zhang

发明人： Matthias J. Schmand ,  Markus Vester ,  Nan Zhang

IPC分类号： G01V3/00

CPC分类号： A61B6/4411 ,  A61B5/0035 ,  A61B5/055 ,  A61B6/037 ,  A61B6/4417 ,  G01R33/481 ,  G01T1/1603 ,  G01T1/1644

摘要： An emission tomography detector module and an emission tomography scanner are disclosed. In at least one embodiment, the emission tomography detector modules includes a scintillator to capture an photon, the scintillator emitting a scintillating light on capturing the photon; a first type of solid-state photodetector to detect the scintillating light; and a second type of solid-state photodetector to detect the scintillating light, wherein the first type of solid-state photodetector and the second type of solid-state photodetector are different with respect to a detecting property.

摘要翻译： 公开了一种发射断层摄影检测器模块和发射断层扫描仪。 在至少一个实施例中，发射断层摄影检测器模块包括闪光体以捕获光子，闪烁体在捕获光子时发射闪烁光; 用于检测闪烁光的第一种类型的固态光电检测器; 以及用于检测闪烁光的第二类型的固态光电检测器，其中所述第一类型的固态光电检测器和所述第二类型的固态光电检测器相对于检测特性是不同的。

公开(公告)号：US08294465B2

公开(公告)日：2012-10-23

申请号：US12750808

申请日：2010-03-31

申请人： Natalia Gudino ,  Jeremiah A. Heilman ,  Mark A. Griswold ,  Markus Vester

发明人： Natalia Gudino ,  Jeremiah A. Heilman ,  Mark A. Griswold ,  Markus Vester

IPC分类号： G01V3/00

CPC分类号： H03F3/217

摘要： Example systems, apparatus, circuits, and so on described herein concern parallel transmission in MRI with on-coil current-mode (CMCD) amplifiers. One example apparatus includes switched voltage-mode class D (VMCD) pre-amplifiers. Another example apparatus includes amplitude modulation of the output of the CMCD amplifiers using feedback control based, at least in part, on a comparison of an envelope of transmit coil current to an envelope of an input RF pulse.

摘要翻译： 本文所述的示例系统，装置，电路等涉及具有线圈电流模式（CMCD）放大器的MRI中的并行传输。 一个示例性设备包括切换电压模式D类（VMCD）前置放大器。 至少部分地基于发射线圈电流的包络与输入RF脉冲的包络的比较，使用反馈控制的CMCD放大器的输出的振幅调制。