Water content profiles with a 1D centric SPRITE acquisition |
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Authors: | Mastikhin I V Mullally H MacMillan B Balcom B J |
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Institution: | MRI Centre, Department of Physics, University of New Brunswick, Fredericton, Canada E3B 5A3. |
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Abstract: | The purpose of this work is to develop a rapid MRI method amenable to profiling with minimal or no T(1) relaxation weighting. The behavior of a signal during a centric SPRITE acquisition is analyzed. It is shown that the technique can be made immune to a broad range of T(1) changes. In a properly executed measurement, only T(2)* and proton density parameters define the image intensity. A T(2)* mapping technique can be easily applied, separating T(2)* and proton density contributions to the image. A drying soil sample with low initial water content is experimentally studied as a demonstration of the technique. A characteristic baseline artifact is easily removed from the profiles by a simple operation. |
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