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Analysis of discrete T2 components of NMR relaxation for aqueous solutions in hollow fiber capillaries

✍ Scribed by Michael J. Bronskill; Giles E. Santyr; Blake Walters; R. Mark Henkelman

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
842 KB
Volume
31
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

An analysis is presented of proton NMR T~2~ relaxation times measured for aqueous solutions In simple bundles of hollow fibers. The relaxation times are calculated with a two‐compartment diffusive exchange model using the known relaxation times of the aqueous solutions and the fiber geometry. When the relaxation time outside the fibers is short (∼1 ms), three or more relaxation components are observed from this two compartment system, in agreement with the calculation. The amplitude and relaxation times of the third component are consistent with those of a diffusion‐mediated mode, as suggested theoretically by Brownstein and Tarr (Phys. Rev. A 19, 2446 (1979)). The possible contribution of such modes to the multicomponent relaxation observed in tissues is discussed.

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