-
公开(公告)号：US10094894B2
公开(公告)日：2018-10-09
申请号：US14632154
申请日：2015-02-26
摘要： An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor.
-
公开(公告)号：US20150241528A1
公开(公告)日：2015-08-27
申请号：US14632154
申请日：2015-02-26
CPC分类号： G01R33/3657 , G01R33/34023
摘要： An arrangement includes a superconducting split ring resonator, a cryostat, and a copper coil. The resonator is arranged in the cryostat and includes at least one ring-shaped conductor made of a superconducting material and including an opening and a taper. The copper coil may be used to transmit a MRI excitation signal. This signal causes a current to be induced in the conductor that leads to the breakdown of the superconductivity. The conductor is detuned and therefore no longer develops an interfering effect. It is possible for the effect of the breakdown of superconductivity to be used for detuning in a targeted manner. After the transmission is complete, the conductor returns into the superconducting state and acts as a superconducting reception antenna for the MRI measurement signal. The copper coil is inductively coupled to the conductor and configured to read out the signal induced in the conductor.
摘要翻译： 一种装置包括超导分裂环谐振器，低温恒温器和铜线圈。 谐振器布置在低温恒温器中，并且包括由超导材料制成并且包括开口和锥形的至少一个环形导体。 铜线圈可用于传输MRI激励信号。 该信号导致导体中导致的电流导致超导性的破坏。 导体失谐，因此不再产生干扰效应。 有可能以有目的的方式将超导性破坏的效果用于失谐。 传输完成后，导体返回超导状态，作为MRI测量信号的超导接收天线。 铜线圈感应耦合到导体并且被配置为读出在导体中感应的信号。
-
公开(公告)号：US20170219667A1
公开(公告)日：2017-08-03
申请号：US15422136
申请日：2017-02-01
CPC分类号： G01R33/3685 , G01R33/30
摘要： A line with a standing wave trap for a magnetic resonance tomograph, and a patient couch and a magnetic resonance tomograph with the line are provided. The line includes a carrier material, a first conductor track that extends along the carrier material in the carrier material or on the carrier material, and a first conductor loop. The first conductor loop is arranged on or in the carrier material. The first conductor loop has a signal coupling to the first conductor track. The first conductor loop has a first interruption that is bridged with a first capacitance.
-
公开(公告)号：US10031192B2
公开(公告)日：2018-07-24
申请号：US14340990
申请日：2014-07-25
IPC分类号： G01R33/561 , G01R33/34 , G01R33/341 , G01R33/36 , G01R33/3415
摘要： An antenna apparatus provides for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device. The antenna apparatus includes a resonator with a plurality of electrically conductive conductor loops, which are each interrupted by a number of electrically insulating slits. The antenna apparatus further includes a carrier substrate for holding the conductor loops and a cable connection apparatus having a number of shielding apparatuses. At least one of the number of shielding apparatuses provides a conductive coupling to a virtual ground of at least one conductor loop.
-
公开(公告)号：US20150048823A1
公开(公告)日：2015-02-19
申请号：US14340990
申请日：2014-07-25
IPC分类号： G01R33/34
CPC分类号： G01R33/34 , G01R33/341 , G01R33/3415 , G01R33/3642 , G01R33/3685
摘要： An antenna apparatus is described, for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device. The antenna apparatus includes a resonator with a plurality of electrically conductive conductor loops, which are each interrupted by a number of electrically insulating slits. The antenna apparatus further includes a carrier substrate for holding the conductor loops and a cable connection apparatus having a number of shielding apparatuses. At least one of the number of shielding apparatuses provides a conductive coupling to a virtual ground of at least one conductor loop. Moreover, an antenna array apparatus, a magnetic resonance system and a method for receiving magnetic resonance signals from an examination object during magnetic resonance imaging using a magnetic resonance device are described.
摘要翻译： 描述了一种用于在使用磁共振装置的磁共振成像期间从检查对象接收磁共振信号的天线装置。 天线装置包括具有多个导电导体环的谐振器，每个导电导体环被多个电绝缘狭缝间断。 天线装置还包括用于保持导体环的载体基板和具有多个屏蔽装置的电缆连接装置。 多个屏蔽装置中的至少一个提供与至少一个导体环路的虚拟接地的导电耦合。 此外，描述了使用磁共振装置的磁共振成像期间的天线阵列装置，磁共振系统和从检查对象接收磁共振信号的方法。
-
公开(公告)号：US09921281B2
公开(公告)日：2018-03-20
申请号：US14222609
申请日：2014-03-22
IPC分类号： G01R33/422
CPC分类号： G01R33/422
摘要： A shielding for a magnetic resonance tomography device, in the form of a shell of a cylinder, for arrangement radially between a radially outer gradient coil system for generating a magnetic field gradient in an examination space of the MRT device and a radially inner RF coil system for sending and/or receiving RF signals into the examination space and from the examination space, is provided. The shielding includes strips that are arranged on a shielding surface, are electrically conductive and are separated from one another by slits. The strips have respectively angled and/or rounded profile segments to create a two-dimensional pattern of shielding rings on the shielding surface.
-
7.发明申请Shielding for a Magnetic Resonance Tomography Device and Magnetic Resonance Tomography Device Equipped Therewith 有权用于磁共振层析成像装置和配备有磁共振层析成像装置的屏蔽公开(公告)号：US20140285202A1
公开(公告)日：2014-09-25
申请号：US14222609
申请日：2014-03-22
IPC分类号： G01R33/422
CPC分类号： G01R33/422
摘要： A shielding for a magnetic resonance tomography device, in the form of a shell of a cylinder, for arrangement radially between a radially outer gradient coil system for generating a magnetic field gradient in an examination space of the MRT device and a radially inner RF coil system for sending and/or receiving RF signals into the examination space and from the examination space, is provided. The shielding includes strips that are arranged on a shielding surface, are electrically conductive and are separated from one another by slits. The strips have respectively angled and/or rounded profile segments to create a two-dimensional pattern of shielding rings on the shielding surface.
摘要翻译： 用于磁共振断层摄影装置的屏蔽体，其为圆柱形壳体的形式，用于径向设置在用于在MRT装置的检查空间中产生磁场梯度的径向外部梯度线圈系统和径向内部RF线圈系统之间 用于向检查空间和检查空间发送和/或接收RF信号。 屏蔽包括布置在屏蔽表面上的条带，导电并且通过狭缝彼此分离。 条具有分别成角度和/或圆形的轮廓段以产生屏蔽表面上的屏蔽环的二维图案。
-
公开(公告)号：US20140091801A1
公开(公告)日：2014-04-03
申请号：US14040611
申请日：2013-09-27
CPC分类号： H01P1/20381 , G01R33/34 , G01R33/3415 , G01R33/365 , H01P5/028
摘要： An arrangement includes a plurality of split ring resonators on a planar substrate. Each split ring resonator of the plurality of split ring resonators includes two mutually parallel ring structures of a metal conductor element spaced apart by the substrate. The two mutually parallel rings structures are respectively separated by at least one gap. At least two split ring resonators of the plurality of split ring resonators are positionable relative to one another such that the separated ring structures may be reciprocally guided through a gap of the respective other ring structures and interlock. Overlap regions may be produced by common ring structure inner surfaces.
摘要翻译： 一种布置在平面基板上包括多个分裂环谐振器。 多个分裂环谐振器的每个分裂环谐振器包括由衬底隔开的金属导体元件的两个相互平行的环形结构。 两个相互平行的环结构分别由至少一个间隙分开。 多个分裂环谐振器中的至少两个开环谐振器可相对于彼此定位，使得分离的环结构可以通过相应的其它环形结构的间隙往复引导并互锁。 重叠区域可以由公共环结构内表面产生。
-
公开(公告)号：US09620835B2
公开(公告)日：2017-04-11
申请号：US14040611
申请日：2013-09-27
IPC分类号： G01R33/34 , H01P1/203 , G01R33/3415 , G01R33/36 , H01P5/02
CPC分类号： H01P1/20381 , G01R33/34 , G01R33/3415 , G01R33/365 , H01P5/028
摘要： An arrangement includes a plurality of split ring resonators on a planar substrate. Each split ring resonator of the plurality of split ring resonators includes two mutually parallel ring structures of a metal conductor element spaced apart by the substrate. The two mutually parallel rings structures are respectively separated by at least one gap. At least two split ring resonators of the plurality of split ring resonators are positionable relative to one another such that the separated ring structures may be reciprocally guided through a gap of the respective other ring structures and interlock. Overlap regions may be produced by common ring structure inner surfaces.
-
公开(公告)号：US20100117650A1
公开(公告)日：2010-05-13
申请号：US12612831
申请日：2009-11-05
申请人： Peter Cork , Sebastian Martius , Markus Vester
发明人： Peter Cork , Sebastian Martius , Markus Vester
CPC分类号： G01R33/3692 , G01R33/3415 , G01R33/3621 , H03F7/04
摘要： A two port parametric amplifier has a first port that receives an input signal to be amplified and upconverted and a second port that receives a local oscillator signal. The amplified upconverted input signal is emitted as an output at upper and lower sideband frequencies. The amplifier further has a pair of varactor diodes connected between the first port and the second port. The diodes are connected in parallel from the first port and in series from the second port.
摘要翻译： 双端口参数放大器具有接收要放大和上变频的输入信号的第一端口和接收本地振荡器信号的第二端口。 放大的上变频输入信号作为上边和下边带频率处的输出发射。 放大器还具有连接在第一端口和第二端口之间的一对变容二极管。 二极管与第一端口并联连接并与第二端口串联连接。
-
-
-
-
-
-
-
-
-
搜索结果
26 条记录 (耗时 0.023 秒)