NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY METHOD

摘要

A sequence acts-preferably several times-upon an examination region, which sequence comprises two frequency-selective high-frequency pulses not exciting the water component, between which a 180 DEG high-frequency pulse is present. Such a sequence can be more insensitive to imperfections of the 180 DEG pulse in that the second frequency-selective high-frequency pulse is followed by a further frequency-selective high-frequency pulse not exciting the water component and in that between the second frequency-selective high frequency pulse and the further high-frequency pulse as well as after the further high-frequency pulse a magnetic gradient field is switched on and off in such a manner that the time integrals across this gradient field before and after the further high-frequency pulse are equal to each other.