Finite-Difference Approach for the High-Precision Analysis of Rotating-Frame Diffusion Images
A finite-difference approach has been developed for precisely determining diffusion coefficient and T1 relaxation time in fluid samples analyzed by magnetization-grating rotating-frame imaging (MAGROFI) with either a surface coil or a toroid cavity detector (TCD). This approach avoids shortcomings of phenomenologically based approximations, such as neglect of sample geometries with singularities at the confines of the sample volume, and accounts for the diffusive edge enhancement observed in fluid imaging. Error limits are discussed. The new method has been applied to the determination of the self-diffusion coefficient for MAGROFI experiments using TCDs filled with acetone.
K. Woelk et al., "Finite-Difference Approach for the High-Precision Analysis of Rotating-Frame Diffusion Images," Journal of Magnetic Resonance, vol. 145, no. 2, pp. 276-290, Elsevier, Aug 2000.
The definitive version is available at http://dx.doi.org/10.1006/jmre.2000.2106
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