发明申请
US20090309594A1 MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS USING A CIRCULARLY POLARIZED RF RESONATOR DETECTING RIGHT AND LEFT CIRCULARLY POLARIZED COMPONENTS OF MR SIGNALS 有权
磁共振成像方法和装置使用圆偏振RF共振器检测正确和左旋的MR信号的圆极化成分

  • 专利标题: MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS USING A CIRCULARLY POLARIZED RF RESONATOR DETECTING RIGHT AND LEFT CIRCULARLY POLARIZED COMPONENTS OF MR SIGNALS
  • 专利标题(中): 磁共振成像方法和装置使用圆偏振RF共振器检测正确和左旋的MR信号的圆极化成分
  • 申请号: US11508813
    申请日: 2006-08-22
  • 公开(公告)号: US20090309594A1
    公开(公告)日: 2009-12-17
  • 发明人: Thorsten FeiweierRazvan Lazar
  • 申请人: Thorsten FeiweierRazvan Lazar
  • 优先权: DE102005039686.0 20050822
  • 主分类号: G01R33/48
  • IPC分类号: G01R33/48
MAGNETIC RESONANCE IMAGING METHOD AND APPARATUS USING A CIRCULARLY POLARIZED RF RESONATOR DETECTING RIGHT AND LEFT CIRCULARLY POLARIZED COMPONENTS OF MR SIGNALS
摘要:
In an MR imaging method and apparatus which MR images with improved signal intensity, improved signal-noise ratio, improved contrast and improved image homogeneity can be acquired, the polarization state of the magnetic field of the RF pulses radiated into the measurement subject and of the resonance signals emitted by the measurement subject are distorted by the interaction with electrically-active materials of the measurement subject. In the transmission branch of the RF system the RF pulses emitted by a transmission coil are pre-distorted with regard to their polarization state. The sensitivity of the reception branch is optimized such that it is capable of detecting resonance signals independent of their polarization state.
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