公开(公告)号：US07164333B2

公开(公告)日：2007-01-16

申请号：US11084422

申请日：2005-03-18

Applicant: Helmut Greim ,  Jürgen Hagen

Inventor： Helmut Greim ,  Jürgen Hagen

IPC: H01P3/02 ,  H01P5/04 ,  H01P1/04

CPC classification number: H01P1/202 ,  G01R33/3685

Abstract: A standing wave barrier for at least one radio frequency cable having a cable axis has at least one metallic base web that proceeds parallel to the cable axis from a first web end to a second web end. The web ends are coupled to one another in terms of radio frequency terms via a capacitance, so that the base web and the capacitance together form a radio frequency resonant oscillator circuit. The base web and the capacitance are situated in one of two half-shells that can be connected to one another such that the radio frequency cable is clamped between them. The capacitance has an adjustable capacitor element that has a first capacitor surface and a second capacitor surface. The first capacitor surface is connected in electrically conductive fashion to the first web end, and the second capacitor surface is connected in electrically conductive fashion to the second web end. The first and the second capacitor surfaces are respectively capacitively coupled to a number of first counter-surfaces and second counter-surfaces. Adjustment of the adjustable capacitor element can be accomplished by making an electrically conductive connection between the first counter-surfaces and the second counter-surfaces.

Abstract translation: 用于具有电缆轴线的至少一个射频电缆的驻波屏障具有至少一个金属底座，其平行于电缆轴线从第一腹板端到第二腹板端。 网端通过电容在射频方面彼此耦合，使得基底网和电容一起形成射频谐振振荡器电路。 底座腹板和电容位于可以彼此连接的两个半壳之一，使得射频电缆夹在它们之间。 电容具有可调电容器元件，其具有第一电容器表面和第二电容器表面。 第一电容器表面以导电方式连接到第一幅材端，并且第二电容器表面以导电方式连接到第二幅材端。 第一和第二电容器表面分别电容耦合到多个第一相对表面和第二相对表面。 可调节电容器元件的调整可以通过在第一相对表面和第二对置表面之间形成导电连接来实现。

公开(公告)号：US06795037B2

公开(公告)日：2004-09-21

申请号：US10388818

申请日：2003-03-14

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: H01Q930

CPC classification number: G01R33/34046

Abstract: A radio-frequency antenna for a magnetic resonance system has a basic element with two end rings and a number of antenna rods, and a radio-frequency mirror. The end rings are arranged concentrically relative to an antenna axis can and are axially offset from one another. The antenna rods are arranged around the antenna axis and connect the end rings. The radio-frequency mirror is inductively coupled to the end rings and the antenna rods. It limits a magnetic resonance excitation signal emitted by the antenna and/or a magnetic resonance signal received by the antenna axially at one side.

Abstract translation: 用于磁共振系统的射频天线具有带有两个端环和多个天线杆的基本元件和射频镜。 端环相对于天线轴线心轴布置并且彼此轴向偏移。 天线杆围绕天线轴线布置并连接端环。 射频反射镜电感耦合到端环和天线杆。 它限制由天线发射的磁共振激励信号和/或天线在一侧轴向接收的磁共振信号。

公开(公告)号：US20150015262A1

公开(公告)日：2015-01-15

申请号：US14319126

申请日：2014-06-30

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01R33/385

CPC classification number: G01R33/385 ,  A61B5/055 ,  G01R33/341 ,  G01R33/3642

Abstract: A local coil for an MRI imaging system includes an antenna containing a first detuning circuit and a second detuning circuit, and a connection connected to the antenna between a first connection point on the antenna and a second connection point on the antenna. The connection is configured to be short-circuited by at least one diode. The first connection point and the second connection point are situated spatially between a first partial region and a second partial region of the antenna.

Abstract translation: 用于MRI成像系统的本地线圈包括包含第一失谐电路和第二失谐电路的天线，以及在天线上的第一连接点和天线上的第二连接点之间连接到天线的连接。 该连接被配置为由至少一个二极管短路。 第一连接点和第二连接点位于空间上位于天线的第一部分区域和第二部分区域之间。

公开(公告)号：US20130241557A1

公开(公告)日：2013-09-19

申请号：US13618635

申请日：2012-09-14

Applicant: Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

Inventor： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Steffen Wolf

IPC: G01R33/36

CPC classification number: G01R33/3642 ,  G01R33/34007 ,  G01R33/3415

Abstract: A magnetic resonance coil for transmitting and/or receiving magnetic resonance signals is provided. The magnetic resonance coil includes at least two overlapping coil elements. Coil conductors of the at least two overlapping coil elements intersect in intersection regions and are arranged on a support. Mutually overlapping coil elements of the at least two overlapping coil elements are arranged on different sides of the support. The support is formed from at least three layers of a support material. A cavity that is filled with air or a filler material, the dielectric constant of the filler material being lower than the dielectric constant of the support material, is provided in the intersection regions in a middle layer of the at least three layers.

Abstract translation: 提供用于发送和/或接收磁共振信号的磁共振线圈。 磁共振线圈包括至少两个重叠的线圈元件。 所述至少两个重叠的线圈元件的线圈导体在交叉区域相交并且布置在支撑件上。 所述至少两个重叠的线圈元件的相互重叠的线圈元件布置在所述支撑件的不同侧上。 支撑体由至少三层的支撑材料形成。 在至少三层的中间层的交叉区域中设置填充有空气或填充材料的空腔，填充材料的介电常数低于载体材料的介电常数。

公开(公告)号：US08244328B2

公开(公告)日：2012-08-14

申请号：US12597947

申请日：2008-10-31

Applicant: Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

Inventor： Stephan Biber ,  Daniel Driemel ,  Helmut Greim ,  Karsten Jahns

IPC: A61B5/00

CPC classification number: H01Q1/276 ,  G01R33/34084 ,  G01R33/3415 ,  H01Q7/00 ,  H01Q9/28

Abstract: A head coil for a magnetic resonance apparatus has a supporting body that carries a number of antenna elements. The supporting body has an end section that is shaped as a spherical cap. A butterfly antenna is mounted at the end section, and is annularly surrounded by at least one group antenna that overlaps the butterfly antenna.

Abstract translation: 用于磁共振装置的磁头线圈具有承载多个天线元件的支撑体。 支撑体具有成形为球形帽的端部。 蝶形天线安装在端部，并且被至少一个与蝴蝶天线重叠的组天线环形围绕。

公开(公告)号：US20120182015A1

公开(公告)日：2012-07-19

申请号：US13183771

申请日：2011-07-15

Applicant: Daniel Driemel ,  Helmut Greim ,  Martin Hemmerlein ,  Thomas Kundner ,  Steffen Wolf

Inventor： Daniel Driemel ,  Helmut Greim ,  Martin Hemmerlein ,  Thomas Kundner ,  Steffen Wolf

IPC: G01R33/341

CPC classification number: G01R33/3685

Abstract: A standing wave trap for a magnetic resonance tomography system includes a local coil connecting lead and at least one flexible printed circuit board in the local coil connecting lead. The local coil connecting lead is wound.

Abstract translation: 用于磁共振断层摄影系统的驻波陷阱包括本地线圈连接引线和本地线圈连接引线中的至少一个柔性印刷电路板。 本地线圈连接引线是缠绕的。

公开(公告)号：US20090256564A1

公开(公告)日：2009-10-15

申请号：US12420140

申请日：2009-04-08

Applicant: Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

Inventor： Helmut Greim ,  Markus Vester ,  Jian Min Wang ,  Wei Dong Wang ,  Yao Xing

IPC: G01R33/44

CPC classification number: G01R33/34076 ,  G01R33/3642 ,  G01R33/3657

Abstract: In a method for processing radio frequency signals of a magnetic resonance imaging system in which the coil portion of the magnetic resonance imaging system includes a body coil and a local coil, radio frequency signals are supplied to the body coil, and these radio frequency signals are coupled to said local coil, and transmitted by said local coil into a region to be examined. A corresponding radio frequency system has a local coil and a body coil, with power coupling between the local coil and the body coil; during the phase for transmitting the radio frequency signals. The body coil serves to couple the radio frequency signals to be transmitted to the local coil, and the local coil serves to transmit the coupled radio frequency signals to a region to be examined. This method and system allow the transmitting function of the local coil to be achieved without having a coil plug on a patient bed to provide a radio frequency signal transmitting channel.

Abstract translation: 在一种用于处理磁共振成像系统的射频信号的方法中，其中磁共振成像系统的线圈部分包括体线圈和局部线圈，射频信号被提供给体线圈，并且这些射频信号是 耦合到所述局部线圈，并由所述局部线圈传输到待检查的区域中。 对应的射频系统具有局部线圈和体线圈，其在局部线圈和体线圈之间具有功率耦合; 在发射射频信号的阶段。 体线圈用于将待传输的射频信号耦合到本地线圈，并且本地线圈用于将耦合的射频信号传输到待检查的区域。 该方法和系统允许实现本地线圈的传输功能，而不需要在病床上设置线圈插头来提供射频信号传输通道。

公开(公告)号：US07570059B2

公开(公告)日：2009-08-04

申请号：US11756788

申请日：2007-06-01

Applicant: Helmut Greim ,  Volker Matschi

Inventor： Helmut Greim ,  Volker Matschi

IPC: G01V3/00

CPC classification number: G01R33/3415 ,  G01R33/3635 ,  G01R33/365

Abstract: A double resonance coil arrangement for a magnetic resonance device has at least two coils, each having a coil conductor, in which at least one first capacitor, as well as at least one inductor forming an oscillating circuit with a second capacitor, are connected. The inductors of two adjacently arranged coils are at a distance from one another and form a transformer. The capacitors, the inductor and the distance are dimensioned such that each coil is double resonant and the at least two coils are decoupled from each other by the transformer.

Abstract translation: 用于磁共振装置的双谐振线圈装置具有至少两个线圈，每个线圈具有线圈导体，其中至少一个第一电容器以及形成具有第二电容器的振荡电路的至少一个电感器被连接。 两个相邻布置的线圈的电感器彼此相距一定距离并形成变压器。 电容器，电感器和距离的尺寸使得每个线圈是双谐振的，并且至少两个线圈由变压器彼此去耦。

公开(公告)号：US20080224702A1

公开(公告)日：2008-09-18

申请号：US12046837

申请日：2008-03-12

Applicant: Yvonne Candidus ,  Helmut Greim ,  Markus Vester ,  Steffen Wolf

Inventor： Yvonne Candidus ,  Helmut Greim ,  Markus Vester ,  Steffen Wolf

IPC: G01R33/38

CPC classification number: G01R33/28 ,  G01R33/5659

Abstract: A field distribution correction element for positioning on an examination subject in a magnetic resonance system for local influencing of the radio-frequency field distribution during a magnetic resonance acquisition has a system of electrically conductive dipole strips essentially running in parallel, arranged on a carrier element. In a corresponding method for generation of magnetic resonance exposures of an examination subject in a magnetic resonance system, for local influencing of the radio-frequency field distribution, such a field distribution correction element is positioned on the patient.

Abstract translation: 用于定位在磁共振系统中的检查对象的场分布校正元件，用于在磁共振采集期间局部影响射频场分布，具有布置在载体元件上的基本上并行运行的导电偶极子带的系统。 在用于产生磁共振系统中的检查对象的磁共振曝光的相应方法中，对于射频场分布的局部影响，这种场分布校正元件位于患者身上。

公开(公告)号：US07268550B2

公开(公告)日：2007-09-11

申请号：US10822383

申请日：2004-04-12

Applicant: Helmut Greim

Inventor： Helmut Greim

IPC: G01V3/00

CPC classification number: G01R33/34046

Abstract: An antenna element for magnetic resonance applications has at least one sub-section that extends along a section axis and is adjacent to an auxiliary circuit. The antenna element has a coupling section and an auxiliary circuit section that is inductively coupled to the sub-section via the coupling section. The auxiliary circuit section extends parallel to the sub-section at a distance from the section axis. The auxiliary circuit has controllable tuning elements therein. Depending on their control state, a radio-frequency excitation current flowing in the sub-section causes, at respectively different times, each of a leading auxiliary current, or a lagging auxiliary current, or no auxiliary current to flow in the auxiliary current section.

Abstract translation: 用于磁共振应用的天线元件具有至少一个沿截面轴线延伸并且与辅助电路相邻的子部分。 天线元件具有耦合部分和辅助电路部分，其经由耦合部分感应耦合到子部分。 辅助电路部分在距离截面轴线一定距离处平行于子部分延伸。 辅助电路在其中具有可控的调谐元件。 根据它们的控制状态，在子部分中流动的射频激励电流分别在辅助电流部分中引起辅助电流或辅助电流中的每一个引导辅助电流或滞后的辅助电流。