FAT-SUPPRESSED MAGNETIC-RESONANCE-IMAGING AT 0.5-T USING BINOMIAL RADIOFREQUENCY PULSES

Fat suppressed MR imaging can be achieved by selectively saturating li pid protons, just before applying a conventional spin-echo rf pulse se quence. The difference in the Larmor frequency between fat and water p rotons is only 3.5 ppm, so that the frequency response of the suppress ing pulse, or pulses, has to be carefully designed. The choice of suit able binomial and modified trains of hard rf pulses was investigated b y computer simulation, phantom testing and T1 weighted spin-echo imagi ng of a normal volunteer's optic nerve at 0.5 T.