Abstract #1688
Comparison of Indirect and Stimulated Echo Compensated T2 Relaxometry Techniques: Extended Phase Graph vs Shinnar-Le Roux Based Modelling
Kelly C McPhee 1 and Alan H Wilman 2
1
Physics, University of Alberta, Edmonton,
Alberta, Canada,
2
Biomedical
Engineering, University of Alberta, Edmonton, Alberta,
Canada
Recent works have implemented methods to fit for single
component T2 from slice selective multi-echo spin echo
experiments with indirect and stimulated echo
compensation. These works have made use of either the
Extended Phase Graph with Fourier Transform slice
approximations, or Shinnar-Le Roux and Bloch simulations
to model complete echo pathways. Here, we compare the
recently demonstrated SLR based fitting technique with
prior flip angle measurement to the EPG based method
which is a commonly used correction technique for
multi-echo spin echo based T2 measurements. We use
simulations and human in vivo experiments to compare
these two methods of indirect and stimulate echo
compensated T2 fitting.
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