MARCIANI,L., LITTLE,S.L., COLEMAN,N., YOUNG,P., TYLER,D., SNEE,J., JOLLIFFE,I.G., DETTMAR,P.W., GOWLAND,P.A. and SPILLER,R.C., 2001. In vivo visualisation of Gaviscon alginate rafts using echo- planar magnetic resonance imaging Gut. 48(Suppl 1), A36-A36 130