Water content profiles with a 1D centric SPRITE acquisition.
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.
Mastikhin
I V
IV
MRI Centre, Department of Physics, University of New Brunswick, Fredericton, Canada E3B 5A3.
Mullally
H
H
MacMillan
B
B
Balcom
B J
BJ
D016014:Linear Models; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008962:Models, Theoretical; D011522:Protons; D014867:Water / Q000737:chemistry*
D011522:Protons; D014867:Water