公开(公告)号：US08814572B2

公开(公告)日：2014-08-26

申请号：US13206579

申请日：2011-08-10

申请人： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

发明人： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

IPC分类号： G09B23/28

CPC分类号： G01R33/58 ,  G01R33/481

摘要： A phantom, particularly for use in MR- or PET-based imaging methods, includes a hollow base body that delimits an interior volume, wherein the interior volume is subdivided into at least two volume portions by at least one separation element, and wherein the separation element or a section thereof consists of foam.

摘要翻译： 特别是用于基于MR或PET的成像方法的体模包括限定内部体积的中空基体，其中内部体积被至少一个分离元件细分成至少两个体积部分，并且其中分离 元件或其一部分由泡沫构成。

公开(公告)号：US20120040322A1

公开(公告)日：2012-02-16

申请号：US13206579

申请日：2011-08-10

申请人： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

发明人： Ludwig Eberler ,  Matthias Fenchel ,  Ralf Ladebeck

IPC分类号： G09B23/28

CPC分类号： G01R33/58 ,  G01R33/481

摘要： A phantom, particularly for use in MR- or PET-based imaging methods, includes a hollow base body that delimits an interior volume, wherein the interior volume is subdivided into at least two volume portions by at least one separation element, and wherein the separation element or a section thereof consists of foam.

摘要翻译： 特别是用于基于MR或PET的成像方法的体模包括限定内部体积的中空基体，其中内部体积被至少一个分离元件细分成至少两个体积部分，并且其中分离 元件或其一部分由泡沫构成。

公开(公告)号：US08054228B2

公开(公告)日：2011-11-08

申请号：US12487728

申请日：2009-06-19

申请人： Ludwig Eberler ,  Wolfgang Renz

发明人： Ludwig Eberler ,  Wolfgang Renz

IPC分类号： H01Q1/26

CPC分类号： G01R33/34076 ,  G01R33/341 ,  G01R33/3415 ,  G01R33/36 ,  G01R33/365 ,  G01R33/3657 ,  G01R33/3685

摘要： An antenna structure for a magnetic resonance device constructed as a radiating or transmitting antenna of the magnetic resonance device, has a non-metallic antenna conductor containing a discharge gas. When energy is imparted to the discharge gas, the antenna conductor forms an electrically conducting gas discharge column and can be used as an electrically conducting antenna element.

摘要翻译： 构成磁共振装置的辐射或发射天线的磁共振装置的天线结构具有含有放电气体的非金属天线导体。 当向放电气体施加能量时，天线导体形成导电气体放电柱，并且可以用作导电天线元件。

公开(公告)号：US20090206836A1

公开(公告)日：2009-08-20

申请号：US11902584

申请日：2007-09-24

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jurgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： G01R33/20 ,  G01T1/166 ,  G01R33/44

CPC分类号： G01R33/28 ,  A61B5/0035 ,  A61B5/055 ,  G01R33/481 ,  G01T1/1603

摘要： A detection unit is disclosed for arrangement in the main magnet of an MR device, which has both an RF transceiver system and a PET detector. In at least one embodiment the RF transceiver system is divided into two parts and the two parts are arranged upstream and downstream of the PET detector in the longitudinal direction of the patient tunnel. The RF transceiver system and PET detector are applied to the same image volume. In at least one other embodiment, an MR device is equipped with the detection unit, and in at least one other embodiment, a method operates the detection unit.

摘要翻译： 公开了用于布置在MR设备的主磁体中的检测单元，其具有RF收发器系统和PET检测器。 在至少一个实施例中，RF收发器系统被分成两部分，并且两个部分被布置在患者隧道的纵向上的PET检测器的上游和下游。 RF收发器系统和PET检测器应用于相同的图像体积。 在至少另一个实施例中，MR装置配备有检测单元，并且在至少一个其它实施例中，一种方法操作检测单元。

公开(公告)号：US06825665B2

公开(公告)日：2004-11-30

申请号：US10428228

申请日：2003-05-02

申请人： Ludwig Eberler ,  Michael Eberler ,  Thomas Kolbeck

发明人： Ludwig Eberler ,  Michael Eberler ,  Thomas Kolbeck

IPC分类号： G01V300

CPC分类号： G01R33/34007 ,  G01R33/34046 ,  G01R33/3854

摘要： A magnetic resonance tomography apparatus has a basic field magnet that is surrounded by a magnet envelope. This basic field magnet surrounds and limits an interior space with a gradient coil system disposed in this interior space and a body coil having an RF antenna and a carrying tube disposed in said gradient coil system as an inner encapsulation cylinder. The magnet envelope and the gradient coil system are both optically as well as acoustically closed by the body coil and a cladding at the end faces and in the interior. The body coil is manufactured by a vacuum casting or vacuum die-casting process.

公开(公告)号：US10557900B2

公开(公告)日：2020-02-11

申请号：US15200522

申请日：2016-07-01

申请人： Ludwig Eberler ,  Volker Matschl ,  Jürgen Nistler

发明人： Ludwig Eberler ,  Volker Matschl ,  Jürgen Nistler

IPC分类号： G01R33/36 ,  G01R33/34

摘要： The embodiments relate to a body coil, to a magnetic resonance device, and to a method for operating a magnetic resonance device. The body coil includes at least one antenna unit and at least one pre-amplification unit, wherein the pre-amplification unit is arranged at a feed point of the antenna unit, wherein the pre-amplification unit has an input reflection factor at the feed point of the antenna unit whose value is greater than 0.7.

公开(公告)号：US09952298B2

公开(公告)日：2018-04-24

申请号：US14570081

申请日：2014-12-15

申请人： Ludwig Eberler ,  Jürgen Nistler

发明人： Ludwig Eberler ,  Jürgen Nistler

IPC分类号： G01R33/36 ,  G01R33/58 ,  G01R33/28

CPC分类号： G01R33/3607 ,  G01R33/28 ,  G01R33/583

摘要： A method and a device are provided for spatial homogenization of the field strength of voltages of radiofrequency pulses of a number of RF transmitters, wherein (a) the measured complex voltages, induced by the electromagnetic field of the antenna, of a plurality of field probes, which are disposed in the vicinity of the antenna, are respectively superposed with a fitting phase shift and used for establishing the new desired homogenized voltages of the radiofrequency pulses of the antenna by a complex transfer function, and/or (b) output signals of at least two directional couplers on the RF feed lines of the antenna are superposed in a respectively fitting phase-shifted manner and these are used to establish complex impedances or scattering parameters of a complex scattering matrix of the antenna, which are used for establishing the new desired homogenized voltages of the radiofrequency pulses of the antenna.

公开(公告)号：US20170016969A1

公开(公告)日：2017-01-19

申请号：US15200522

申请日：2016-07-01

申请人： Ludwig Eberler ,  Volker Matschl ,  Jürgen Nistler

发明人： Ludwig Eberler ,  Volker Matschl ,  Jürgen Nistler

IPC分类号： G01R33/34 ,  G01R33/36 ,  G01R33/341

摘要： The embodiments relate to a body coil, to a magnetic resonance device, and to a method for operating a magnetic resonance device. The body coil includes at least one antenna unit and at least one pre-amplification unit, wherein the pre-amplification unit is arranged at a feed point of the antenna unit, wherein the pre-amplification unit has an input reflection factor at the feed point of the antenna unit whose value is greater than 0.7.

摘要翻译： 实施例涉及体线圈，磁共振装置以及用于操作磁共振装置的方法。 身体线圈包括至少一个天线单元和至少一个预放大单元，其中预放大单元布置在天线单元的馈电点处，其中预放大单元在馈电点处具有输入反射系数 的值大于0.7的天线单元。

公开(公告)号：US20120086451A1

公开(公告)日：2012-04-12

申请号：US13253066

申请日：2011-10-05

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler

IPC分类号： G01R33/34

CPC分类号： G01R33/3657 ,  G01R33/34076 ,  G01R33/481 ,  G01R33/56518

摘要： The present embodiments include a magnetic resonance antenna having parallel-running longitudinal antenna rods arranged in a birdcage structure and antenna ferrules connecting the parallel-running longitudinal antenna rods at ends of the parallel-running longitudinal antenna rods in radio frequency terms. The magnetic resonance antenna includes a plurality of radio-frequency switching elements configured to interrupt at least a part of the parallel-running longitudinal antenna rods to detune a natural resonance frequency with respect to an operating magnetic resonance frequency in radio frequency terms. At least some radio-frequency switching elements of the plurality of radio-frequency switching elements are arranged at end sections of the parallel-running longitudinal antenna rods.

摘要翻译： 本实施例包括具有布置在鸟笼结构中的平行行进的纵向天线杆的磁共振天线和以平行延伸的纵向天线杆的端部在平行延伸的纵向天线杆的端部处以射频方式连接的天线套圈。 磁共振天线包括多个射频开关元件，其被配置为中断至少一部分并行运行的纵向天线杆，以使其相对于工作磁共振频率在射频期间失谐。 多个射频开关元件中的至少一些射频开关元件布置在并行运行的纵向天线杆的端部。

公开(公告)号：US08073527B2

公开(公告)日：2011-12-06

申请号：US11905250

申请日：2007-09-28

申请人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

发明人： Ludwig Eberler ,  Razvan Lazar ,  Jürgen Nistler ,  Wolfgang Renz ,  Norbert Rietsch

IPC分类号： A61B5/05

CPC分类号： G01R33/3415 ,  G01R33/481

摘要： An RF antenna arrangement of a combined MR/PET system is disclosed. In at least one embodiment, the RF antenna arrangement includes a first part installed in the examination tunnel in a fashion fixed to the system such that it is arranged underneath the couch board when the latter is introduced, and a second part, which can be placed onto the couch board and be introduced into and withdrawn from the examination tunnel together with the couch board. In at least one embodiment, the second part is of dimensionally stable design and has a clear cross section that is adapted to the object to be examined. Consequently, the time outlay for applying the RF antenna is reduced, and the fixed position of the RF antenna enables a correction of the attenuation of gamma rays. Furthermore, a number of second parts having various diameters can be provided.

摘要翻译： 公开了一种组合MR / PET系统的RF天线装置。 在至少一个实施例中，RF天线布置包括以固定到系统的方式安装在检查隧道中的第一部分，使得它被布置在沙发板的下方，当其被引入时，第二部分可以被放置 进入沙发板，并与沙发板一起引入和从检查隧道中取出。 在至少一个实施例中，第二部分是尺寸稳定的设计，并且具有适于被检查物体的清晰的横截面。 因此，减少了施加RF天线的时间费用，并且RF天线的固定位置能够校正伽马射线的衰减。 此外，可以提供多个具有各种直径的第二部分。