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Magnetic resonance non-balanced-SSFP method for the detection and imaging of susceptibility related magnetic field distortions

  • US 7,567,081 B2
  • Filed: 05/03/2007
  • Issued: 07/28/2009
  • Est. Priority Date: 05/03/2007
  • Status: Active Grant
First Claim
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1. A method of magnetic resonance imaging (MRI) within a MRI apparatus comprising:

  • providing a non-balanced (nb) steady state free precession (SSFP) protocol in which spins are in steady-state while the imaging gradient itself is non-balanced wherein spins are dephased so that signal(s) are suppressed in an MRI image,subjecting material having magnetic susceptibility to said non-balanced SSFP protocol wherein said material causes a local magnetic field distortion generating local field gradients,wherein said local field gradients generated from said material compensate for said dephased spins of the nb-SSFP locally so that said dephased spins of the nb-SSFP are rephrased in order to provide a local signal from the material having magnetic susceptibility which is utilized in generating an MRI image from the MRI apparatus.

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