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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/63764

Title: Continuous wave MRI of heterogeneous materials
Author: FAGAN, ANDREW JOHN
Author's Homepage: http://people.tcd.ie/faganan
Keywords: MRI
Continuous wave
Solid-imaging
Short-T2
Issue Date: 2003
Publisher: Elsevier
Citation: A. J. Fagan, G. R. Davies, J. M. S. Hutchison, and D. J. Lurie ‘Continuous wave MRI of heterogeneous materials’ in Journal of Magnetic Resonance, 163, (2), 2003, pp 318 - 324
Series/Report no.: Journal of Magnetic Resonance;163, 2
Abstract: A prototype continuous wave MRI system operating at 7 T has been used successfully to study a variety of heterogeneous materials exhibiting T2 relaxation values ranging from 10 s to 50 ms. Two-dimensional images of a poly(methyl methacrylate) (PMMA) resolution phantom (T2 = 38 s) exhibited a spatial resolution of approximately 1 mm at a magnetic field gradient strength of 200 mT/m. The technique was used to study the hydration, drying and subsequent water penetration properties of cement samples made from ordinary Portland cement, and revealed inhomogeneities arising from the cure conditions. Sandstone samples from an oil reservoir in the North Sea were also studied; structure within these materials, arising from the sedimentary bed layering in the reservoir, was found to have an effect on their water transport properties. A section from a confectionery bar (T2* approximately 50-60 ms) was also imaged, and its internal structure could be clearly discerned.
Description: PUBLISHED
URI: http://www.sciencedirect.com/science?_ob=MImg&_imagekey=B6WJX-4980S4T-6-S&_cdi=6890&_user=103681&_orig=search&_coverDate=08%2F31%2F2003&_sk=998369997&view=c&wchp=dGLzVlz-zSkzk&md5=2faffcaffb2c7acf10b24d814c384363&ie=/sdarticle.pdf
http://hdl.handle.net/2262/63764
Appears in Collections:Physics (Scholarly Publications)

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