3-DIMENSIONAL MAGNETIC-RESONANCE-IMAGING OF A LIQUID FOAM

We describe three-dimensional magnetic resonance imaging (MRI) of a li quid foam. Difficulties in imaging arise from the rate of evolution of the foam and the magnetic susceptibility mismatch at the boundaries b etween liquid and air. We used a protein gelatin foam, for which we im proved relaxation rates and matched the susceptibility. A three-dimens ional spin-echo sequence yielded strongly T-2 weighted signals. The re constructed data represents the first such full three-dimensional imag e of a liquid foam.