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Magnetic resonance imaging method

  • US 4,978,918 A
  • Filed: 05/09/1989
  • Issued: 12/18/1990
  • Est. Priority Date: 05/16/1988
  • Status: Expired due to Fees
First Claim
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1. A method of NMR or ESR, or the like imaging in which an RF magnetic field pulse, a slice magnetic field, a phase encoding magnetic field and a signal reading magnetic field are applied to a sample in a predetermined sequence, for the construction of a desired slice image on the basis of a magnetic resonance signal from the sample, comprising the steps of:

  • applying a first signal reading magnetic field having a predetermined pulse area;

    applying a second signal reading magnetic field having a pulse area twice that of said predetermined pulse area and having a polarity opposite to that of said first signal reading magnetic field; and

    applying a third signal reading magnetic field having the same polarity as that of said first signal reading magnetic field,said steps of applying said first signal reading magnetic field, applying said second signal reading magnetic field and applying said third signal reading magnetic field are performed in the interval from the application of the RF magnetic field pulse and until a magnetic resonance signal is obtained, andthe peak value of said magnetic resonance signal is obtained when the pulse area of said third signal reading magnetic field becomes equal to said predetermined pulse area.

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