Correction of signal distortion in an NMR apparatus

摘要

Temporal Bo shifts in NMR spectroscopy and/or imaging systems arising from pulsed field gradient induced eddy currents result in the distortion of free induction decay signals. A method of compensation of this distortion through modulation of the sender and/or receiver signal in opposite concert with the induced Bo shifts is introduced. The method has the advantage of having a fast response and of not altering the magnetic gradient field. (FIG.