Two dimensional T1/T2APP-T2APP processing of multi-gradient NMR data
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United States of America Patent
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Apr 27, 2010
Grant Date -
Aug 6, 2009
app pub date -
Feb 1, 2008
filing date -
Feb 1, 2008
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Abstract
A method for estimating a property of a material, the method including: acquiring data using nuclear magnetic resonance (NMR) measurements, the measurements performed by varying at least one of a magnetic field gradient (G) and an inter-echo time (TE); organizing the data according to at least one of magnetic field gradients (G) and inter-echo times (TE) used in the NMR measurements; calculating a shift of apparent transverse relaxation time (T.sub.2,app) and (longitudinal relaxation time T.sub.1)/(apparent transverse relaxation time T.sub.2,app) due to a variation of the product of G and TE; constructing a mathematical model of the NMR measurements from the shifts; and inverting the mathematical model to estimate the property.
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