Mak. Williams et Tk. Halstead, AN ANALYTICAL FORM DESCRIBING T-2 DISPERSIONS RESULTING FROM DIFFUSIVE EXCHANGE, Molecular physics, 93(4), 1998, pp. 609-613
Dispersions in the H-1 T-2 (Carr-Purcell-Meiboom-Gill) relaxation beha
viour analogous to those well known to result from chemical exchange h
ave been generated by numerical simulations of fast diffusive exchange
between two spatially resolved regions having distinct NMR parameters
. These resultant curves have been successfully fitted to a Carver-Ric
hards functional form. Hence, apparent exchange rates and geometry-dep
endent scaling factors of the frequency difference between regions hav
e been extracted, which allow dispersions arising from spatially heter
ogeneous systems to be described by a two-site exchange model.