Abstract: A method and apparatus for the compensation of an eddy current magnetic field in the magnetic field of a pulsed gradient coil in an MR scanning apparatus, wherein: an MR-active sample is positioned along a given coordinate axis within a magnetic field of the gradient coil and away from its isocenter; a plurality of time-sequential gradient coil pulses are applied to the gradient coil for generating a corresponding plurality of gradient magnetic field pulses; the sample is irradiated with an RF excitation pulse a given time delay which is increased following application of each of the gradient coil pulses, so as to generate a plurality of time-sequential MR signals; each of the MR signals are measured, Fourier transformed and stored as data, the data representative of the eddy current magnetic field; correction coefficients are calculated for compensating the magnetic field of the gradient coil with respect to the eddy current magnetic field using peak frequency shift data determined from the stored data; and

Abstract: A magnetic resonance imager/spectrometer including a main magnet having a bore axially formed therethrough in which a base field is formed. A gradient field forming means is positioned inside the bore of the main magnet for providing at least one axial field gradient inside the bore. An electrically conductive media in the main magnet surrounds the gradient coil and has eddy currents induced thereon via pulsing of the gradient field which generates a disturbing magnetic field along said same axis as said gradient field. A gradient position adjusting means, including an adjustable positioner, is used for adjusting the position of the gradient field forming means with respect to the bore of the main magnet in order to cause the center point of the axial magnetic fields of the electrically conductive media and the gradient field forming means to substantially coincide.