Patent ID: 6552541
Filing Date: 2003-04-22
Classification: G01R

Abstract:
A method for correcting disturbing influences on magnetic resonance (MR) signals of a substance, the method comprising the steps of:a) disposing the substance in a measuring volume of an MR apparatus; b) irradiating at least one radio frequency (RF) excitation pulse onto the substance; c) defining a predetermined reference signal having a predetermined reference phase time dependence within a duration of said reference signal; d) detecting and digitizing, in a phase-sensitive fashion, an MR signal emanating from the substance in response to said excitation pulse, said MR signal having an MR signal phase time dependence within a duration of said MR signal; e) determining a digitized time dependent phase difference &Dgr;&phgr;i(ti) between said MR signal phase and said predetermined reference signal phase; and f) extracting at least one time dependent correction variable from said phase difference.