On the inversion of complex magnetic resonance signals

It is known that the phase shift caused by electrically conductive subsurface makes the magnetic resonance signal complex (Legchenko, et al., 1990). Obviously, inversion of the complex signal may provide more information about the subsurface in comparison with inversion of only amplitudes currently available (Legchenko and Shushakov, 1998). Recently, an effort was made to improve the mathematical model used for interpreting MRS measurements.