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US09448297B2 Mode splitter/combiner for noise figure minimization and control of power in RF coil arrays 有权
模式分路器/组合器，用于噪声系数最小化和RF线圈阵列功率的控制

  • Patent Title: Mode splitter/combiner for noise figure minimization and control of power in RF coil arrays
  • Patent Title (中): 模式分路器/组合器，用于噪声系数最小化和RF线圈阵列功率的控制
  • Application No.: US14240520
    Application Date: 2012-08-27
  • Publication No.: US09448297B2
    Publication Date: 2016-09-20
  • Inventor: George Randall Duensing
  • Applicant: George Randall Duensing
  • Applicant Address: NL Eindhoven
  • Assignee: KONINKLIJKE PHILIPS N.V.
  • Current Assignee: KONINKLIJKE PHILIPS N.V.
  • Current Assignee Address: NL Eindhoven
  • International Application: PCT/IB2012/054366 WO 20120827
  • International Announcement: WO2013/035007 WO 20130314
  • Main IPC: A61B5/05
  • IPC: A61B5/05 ;  G01R33/565 ;  G01R33/36 ;  H01Q3/26
Mode splitter/combiner for noise figure minimization and control of power in RF coil arrays
Abstract:
A magnetic resonance (MR) system (10) minimizes noise for modes of an array of coils (261, 262, . . . , 26n). The system (10) includes an array of coils (261, 262, . . . , 26n) in which the coils of the array (261, 262, . . . 26n) share impedances. A splitter/combiner (30) receives a plurality of signals (S1; S2, . . . , Sn) from each of the coils (261, 262, . . . , 26n) and converts the plurality of signals (S1; S2, . . . , Sn) to a plurality of signals (S1; S2, . . . , Sn) which are compensated for the shared impedance. The splitter/combiner (30) splits the received signals (S1; S2, . . . , Sn) into components and combines components of like frequency and/or phase to create the impedance compensated signals (S1; S2, . . . , Sn). Each impedance compensated signal is amplified by a corresponding preamplifier (381, 382, . . . , 38n).
Abstract(Chinese):

磁共振（MR）系统（10）使线圈阵列（261,262 ...，26n）的模式的噪声最小化。 系统（10）包括阵列阵列（261,262 ...，26n），其中阵列（261,262 ... ... 26n）的线圈共享阻抗。 分路器/组合器（30）从每个线圈（261,262 ...，26n）接收多个信号（S1; S2，...，Sn）并将多个信号（S1; S2， ...，Sn）到补偿了共享阻抗的多个信号（S1; S2，...，Sn）。 分路器/组合器（30）将接收的信号（S1; S2，...，Sn）分成分量并组合类似频率和/或相位的分量以产生阻抗补偿信号（S1; S2，...，Sn ）。 每个阻抗补偿信号被相应的前置放大器（381,382，...，38n）放大。

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