Journal
MAGNETIC RESONANCE IMAGING
Volume 25, Issue 4, Pages 517-520Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.mri.2007.01.001
Keywords
magnetic resonance; porous media; diffusion; modulated gradient spin echo; velocity correlation function; CPMG sequence
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Carr-Purcell-Meiboom-Gill (CPMG) train of radiofrequency pulses applied to spins in the constant magnetic field gradient is an efficient variant of the modulated magnetic field gradient spin echo method, which provides information about molecular diffusion in the frequency domain instead of in the time domain as with the two-pulse gradient spin echo. The frequency range of this novel technique is broad enough to sample the power spectrum of displacement fluctuation in water-saturated pulverized silica (SiO2) and provides comprehensive information about the molecular restricted motion as well as about the structure of the medium. (C) 2007 Elsevier Inc. All rights reserved.
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