公开(公告)号：US5606259A

公开(公告)日：1997-02-25

申请号：US419548

申请日：1995-04-10

申请人： Andreas Potthast ,  Wilhelm Duerr

发明人： Andreas Potthast ,  Wilhelm Duerr

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36 ,  G01R33/44 ,  G01R33/465

CPC分类号： G01R33/34084 ,  G01R33/34007 ,  G01R33/341 ,  G01R33/3628 ,  G01R33/3678 ,  G01R33/422

摘要： An antenna for a magnetic resonance apparatus has an antenna conductor that can be adapted to examination regions of different sizes, with one region of the antenna conductor divided into conductor sections. The conductor sections are connected to one another via capacitive elements, with the conductor sections and the capacitive elements connected alternating in series. The conductor sections are connectable to the remaining antenna conductor via releasable electrical connections.

摘要翻译： 用于磁共振装置的天线具有天线导体，该天线导体可适用于检查不同尺寸的区域，天线导体的一个区域分成导体部分。 导体部分经由电容元件彼此连接，导体部分和电容元件串联连接。 导体部分可通过可释放的电连接连接到剩余的天线导体。

公开(公告)号：US5523689A

公开(公告)日：1996-06-04

申请号：US420213

申请日：1995-04-11

申请人： Ralph Oppelt ,  Wilhelm Duerr

发明人： Ralph Oppelt ,  Wilhelm Duerr

IPC分类号： G01R33/20 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36 ,  G01R33/422 ,  H01Q1/36 ,  G01V3/00

CPC分类号： G01R33/34046 ,  G01R33/34007 ,  G01R33/422 ,  G01R33/56518

摘要： A radio-frequency antenna for a magnetic resonance apparatus has an antenna conductor in the form of a ribbon conductor. The ribbon antenna conductor has interconnects arranged side-by-side. Neighboring interconnects are connected to one another via bridges that conduct radio-frequency currents.

摘要翻译： 用于磁共振装置的射频天线具有带状导体形式的天线导体。 带状天线导体具有并排布置的互连。 相邻的互连通过传导射频电流的桥连接。

公开(公告)号：US5128615A

公开(公告)日：1992-07-07

申请号：US623210

申请日：1990-12-06

申请人： Ralph Oppelt ,  Wilhelm Duerr ,  Horst Siebold

发明人： Ralph Oppelt ,  Wilhelm Duerr ,  Horst Siebold

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34 ,  G01R33/341

CPC分类号： G01R33/3678 ,  G01R33/34 ,  G01R33/341

摘要： A resonator for use in a magnetic resonance imaging apparatus for transmitting and receiving high frequency signals is formed by a combination of two antenna sub-systems, which generate respective magnetic fields which are perpendicular to each other, with the currents in the sub-system being phase-shifted by 90.degree. relative to each other, and each sub-system includes a capacitance which defines the resonant frequency. Each of the sub-systems forms a current loop, the current loops containing a common current network and a common base plate, which serves as a return path for both current loops. The junctions of the current network are connected via the resonant capacitances to the base plate, which consists of electrically conductive material. A circularly polarizing resonator is achieved for the transversal, fundamental field of the imaging apparatus, with the resonator also being capable of use as a surface resonator if the spacing between the current network and the base plate is small.

摘要翻译： 用于发送和接收高频信号的磁共振成像装置的谐振器由两个天线子系统的组合形成，两个天线子系统产生彼此垂直的各个磁场，子系统中的电流为 相对于彼此相移90度，并且每个子系统包括限定谐振频率的电容。 每个子系统形成电流回路，电流回路包含公共的当前网络和公共基板，其作为两个电流回路的返回路径。 当前网络的接点通过谐振电容连接到由导电材料组成的基板。 对于成像装置的横向基本场，实现圆偏振谐振器，如果当前网络和基板之间的间隔小，则谐振器也能够用作表面谐振器。

公开(公告)号：US5663646A

公开(公告)日：1997-09-02

申请号：US624913

申请日：1996-03-27

申请人： Rainer Kuth ,  Michael Knauth ,  Rainer Wirtz ,  Reiner Henkelmann ,  Rudolf Moder ,  Wilhelm Duerr

发明人： Rainer Kuth ,  Michael Knauth ,  Rainer Wirtz ,  Reiner Henkelmann ,  Rudolf Moder ,  Wilhelm Duerr

IPC分类号： A61B5/055 ,  G01R33/34 ,  G01V3/00

CPC分类号： G01R33/34084 ,  G01R33/34046 ,  A61B90/14

摘要： A head antenna for nuclear magnetic resonance examinations has an examination chamber, formed so as to accept the head, and an antenna conductor, formed as a frame antenna, that surrounds the examination chamber in an examination position. The antenna conductor is divided into two curved sub-conductors that respectively have electrical contacts at their ends for detachably electrically connecting the sub-contractors together. The first sub-conductor arrangement is fastened to a holding part which is arranged outside the examination chamber and which is made of an electrically non-conductive, non-ferromagnetic material. For fastening the holding part to a patient support, a first fastening assembly is arranged on the holding part. For fixing the position of the head, a second fastening assembly is arranged on the holding part.

摘要翻译： 用于核磁共振检查的头部天线具有形成为接受头部的检查室和形成为框架天线的天线导体，该天线导体在检查位置包围检查室。 天线导体被分成两个弯曲的分导体，它们在它们的端部分别具有电触头，用于可拆卸地电连接分包机。 第一分导体布置被紧固到布置在检查室外部并由非导电非铁磁材料制成的保持部件上。 为了将保持部件固定到患者支架上，第一紧固组件布置在保持部件上。 为了固定头部的位置，在保持部件上布置有第二紧固组件。

公开(公告)号：US5107217A

公开(公告)日：1992-04-21

申请号：US499771

申请日：1990-03-27

申请人： Wilhelm Duerr

发明人： Wilhelm Duerr

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36

CPC分类号： G01R33/3635 ,  G01R33/345

摘要： A radio frequency antenna for a nuclear magnetic resonance tomography apparatus has interior conductors which form a transmission line resonator with at least one shortening capacitor. The transmission line resonator can resonate at a plurality of resonator frequencies, and a trap circuit is provided for decoupling the interior conductors from the other conductors. The antenna can be operated at a number of different resonate frequencies, for example, at frequency f.sub.1 =170 MHz for protons (hydrogen) and F.sub.2 =69 MHz for phosphorous.

摘要翻译： 用于核磁共振断层摄影装置的射频天线具有形成具有至少一个缩短电容器的传输线谐振器的内部导体。 传输线谐振器可以以多个谐振器频率谐振，并且提供陷波电路用于将内部导体与其它导体分离。 天线可以以许多不同的谐振频率操作，例如，在质子（氢）的频率f1 = 170MHz，磷的F2 = 69MHz。

公开(公告)号：US4920522A

公开(公告)日：1990-04-24

申请号：US41216

申请日：1987-04-22

申请人： Wilhelm Duerr ,  Ralph Oppelt

发明人： Wilhelm Duerr ,  Ralph Oppelt

IPC分类号： A61B5/055 ,  A61B10/00 ,  G01R29/08 ,  G01R33/02 ,  G01R33/028 ,  G01R33/36 ,  G01R33/58 ,  G10K11/24 ,  G01V1/00

CPC分类号： G01R33/3621 ,  A61B5/055 ,  G01R29/0892 ,  G01R33/028 ,  G10K11/24 ,  G01R33/3692

摘要： A method and apparatus for measuring electrical or magnetic fields, such as high-frequency alternating fields in a nuclear magnetic resonance tomography device, convert a test signal into a corresponding ultrasound signal, and transmit the ultrasound signal to a receiver, where the received signal is converted back into an electrical signal. The transmission path contains no metallic components and thus does not cause any disturbance in the field being measured.

摘要翻译： 用于测量诸如核磁共振断层摄影装置中的高频交变场的电场或磁场的方法和装置将测试信号转换为对应的超声信号，并将超声信号发送到接收机，其中接收的信号为 转换回电信号。 传输路径不含金属成分，因此不会在被测场中产生干扰。

公开(公告)号：US4725782A

公开(公告)日：1988-02-16

申请号：US36797

申请日：1987-04-10

申请人： Ralph Oppelt ,  Wilhelm Duerr

发明人： Ralph Oppelt ,  Wilhelm Duerr

IPC分类号： A61B10/00 ,  A61B5/055 ,  G01R33/32 ,  G01R33/34 ,  G01R33/422 ,  G01R33/20

CPC分类号： G01R33/422

摘要： An antenna structure for exciting a substantially homogeneous magnetic RF field and/or for receiving RF signals in a nuclear magnetic resonance tomography apparatus includes a hollow cylindrical conductor sheath which is substantially transmissive at low frequencies for gradient magnetic fields, a number of conductor units within the conductor sheath, each conductor unit including at least one conductor element, and RF reflector disposed at the end faces of the antenna structure and an external energy feed or reception device. In this antenna structure, the current drop which increasingly occurs toward the end faces of the antenna structure is largely compensatable by shaping the electrically conductive cross-section of the conductor units so as to decrease symmetrically from an axial center of the antenna structure moving toward the end faces of the structure. The conductor units thus have a largest cross-section at a center of the antenna structure, and a smallest cross-section at the end faces.

摘要翻译： 在核磁共振断层摄影装置中用于激发基本上均匀的磁RF场和/或用于接收RF信号的天线结构包括：中空圆柱形导体护套，其在低频下对于梯度磁场基本上是透射的，所述多个导体单元在 导体护套，每个导体单元包括至少一个导体元件，以及设置在天线结构的端面处的RF反射器和外部能量馈送或接收装置。 在该天线结构中，朝向天线结构的端面越来越多地发生的电流下降通过对导体单元的导电横截面进行成形以便从天线结构的轴向中心对称地向着 结构的端面。 因此，导体单元在天线结构的中心处具有最大的横截面，并且在端面处具有最小的横截面。

公开(公告)号：US6131396A

公开(公告)日：2000-10-17

申请号：US938886

申请日：1997-09-26

申请人： Wilhelm Duerr ,  Markus Vester

发明人： Wilhelm Duerr ,  Markus Vester

IPC分类号： G01R33/28 ,  A61B5/055 ,  G01R33/34 ,  H01Q1/00 ,  H01Q1/36 ,  H05K9/00 ,  F25B19/00

CPC分类号： G01R33/3403 ,  G01R33/34 ,  H01Q1/002 ,  H01Q1/364 ,  G01R33/34007 ,  G01R33/34023 ,  Y10S62/13

摘要： A heat radiation shield has an electrically insulating support on which a mosaic of electrically conductive elementary layers is arranged on at least one side.

摘要翻译： 热辐射屏蔽具有电绝缘支撑件，至少一面上布置导电元件层的马赛克。

公开(公告)号：US5969526A

公开(公告)日：1999-10-19

申请号：US879820

申请日：1997-06-20

申请人： Wilhelm Duerr

发明人： Wilhelm Duerr

IPC分类号： A61B5/055 ,  G01R33/36 ,  G01R32/00

CPC分类号： G01R33/3628

摘要： A transmission/reception arrangement for a diagnostic magnetic resonance apparatus has an antenna, a matching and tuning circuit and a signal transmission line. The antenna together with the matching and tuning circuit is fashioned for exciting and/or receiving proton magnetic resonance signals having a first frequency. A reactance circuit is connected between the matching and tuning circuit and the signal transmission line. The reactance circuit is fashioned such that a reflection factor to the second transmission line substantially disappears at a second frequency. The apparatus is thus provided with the capability of conducting examinations using hyperpolarized gases, while still preserving the capability of conducting imaging with conventional proton (.sup.1 H) signals without modification.

摘要翻译： 用于诊断磁共振装置的发送/接收装置具有天线，匹配和调谐电路以及信号传输线。 天线与匹配和调谐电路一起被设计用于激发和/或接收具有第一频率的质子磁共振信号。 电抗电路连接在匹配和调谐电路与信号传输线之间。 电抗电路被形成为使得到第二传输线的反射系数基本上在第二频率消失。 因此，该装置具有使用超极化气体进行检查的能力，同时仍保持以常规质子（1H）信号进行成像的能力而无需修改。

公开(公告)号：US4922204A

公开(公告)日：1990-05-01

申请号：US330110

申请日：1989-03-29

申请人： Wilhelm Duerr ,  Ralph Oppelt

发明人： Wilhelm Duerr ,  Ralph Oppelt

IPC分类号： G01R33/32 ,  A61B5/055 ,  G01R33/34 ,  G01R33/36

CPC分类号： G01R33/3685

摘要： For operating the radio-frequency antenna of a nuclear magnetic resonance tomography apparatus, the antenna being connected to an asymmetrical line, a sheath wave trap is provided between the antenna and the line, with the inductor of the sheath wave trap being a toroid. A low-scatter sheath wave trap is obtained in this manner, particularly suitable for circularly polarized resonators. The trap suppresses difference currents caused by asymmetries, and thus simultaneously functions as a balanced-to-unbalanced transformer (balun).

摘要翻译： 为了操作核磁共振断层摄影装置的射频天线，天线与非对称线路连接，在天线和线路之间设置鞘波陷阱，鞘波陷阱的电感器为环形线圈。 以这种方式获得低散射鞘波陷阱，特别适用于圆偏振谐振器。 陷波器抑制由不对称引起的差异电流，从而同时用作平衡 - 不平衡变压器（balun）。