Multiple spin echoes are reported to occur after the application of a
single radio-frequency pulse. These are explained by a correlation bet
ween the inhomogeneities of the static B-0 field and the radio-frequen
cy B-1 field on the one hand and by the occurrence of dipolar demagnet
ising field effects on the other. (C) 1998 Elsevier Science B.V. All r
ights reserved.