Quantitative NMR spin-lattice-relaxation imaging of brine in sandstone reservoir cores

Authentication of the effect of freezing/thawing of pork by quantitative magnetic resonance imaging

“…All the experimental data were transferred from the spectrometer console to a network of Unix workstations, and the image display and numerical analysis of sample regions were performed with imaging software (Cmrview) written-in house by N. J. Herrod. and maps were generated by Ðtting the T 1 , T 2 T 1 sat NMR relaxation curves for each pixel of the MR images, using curve-Ðtting software (CmrÐt) written inhouse by J. J. Attard et al 8 Bulk water values and T 2 di †usion coefficients were obtained by Ðtting the NMR data to mono-or bi-exponential functions, also using CmrÐt. Comparative statistical analyses between NMR parameters were performed with StudentÏs t-test.20…”

Relaxation Time Mapping of ShortT*2Nuclei with Single-Point Imaging (SPI) Methods

“…For inhomogeneous materials, however, measurements in bulk are not sufficient because the NMR relaxation times will vary spatially (23)(24)(25)(26). The oscillating gradient recalled echo method has been used for relaxation time mapping of porous water saturated materials; however, technical limitations on the oscillation period (TE min Ϸ 200 s) limit the shortest measurable relaxation time (27,28).…”

Magnetic Resonance Imaging of Meat Products: Automated Quantitation of the NMR Relaxation Parameters of Cured Pork, by Both ‘bulk’ NMR and MRI Methods

“…As already described (Attard 1992), systematic differences are usually observed between results obtained via 'bulk' and MRI methods. The inversionrecovery method is traditionally preferred for 'bulk' measurements since it has twice the dynamic range of the saturation-recovery method.…”