MRI apparatus

MRI apparatus

  • CN 100,465,659 C
  • Filed: 03/28/1996
  • Issued: 03/04/2009
  • Est. Priority Date: 03/28/1995
  • Status: Active Grant
First Claim
Patent Images

1. MRI device comprises:

  • The main field generation device;

    The RF pulse transmitter is for applying the RF pulse;

    The gradient magnetic bringing device is for applying gradient magnetic, so that realize the high speed self-rotary echo-pulse series;

    WithThe NMR signal receiving device,Described RF pulse transmitter sends the RF pulse, described gradient magnetic bringing device is applied to the phase encoding axle to phase encoding gradient, wherein said phase encoding gradient is to obtain by phase encoding axle correction component being added to the fundametal component of described phase encoding gradient on described phase encoding axle, described phase encoding axle correction component is used to proofread and correct eddy current and the remanent magnetism influence that is caused by the phase encoding gradient that is applied to described phase encoding axle, the fundametal component of described phase encoding gradient is determined by sweep parameter, perhaps, described gradient magnetic bringing device is applied to described phase encoding axle to phase encoding gradient that is equivalent to described fundametal component and the auxiliary phase encode gradient that is equivalent to phase encoding axle correction component, and described gradient magnetic bringing device handle after described NMR signal receiving device has received the NMR signal is applied to the phase encoding axle with the fundametal component polarity whole again phase gradient that time integral value is equal on the contrary mutually of described phase encoding gradient.

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