Abstract #4456
Diffusion tensor imaging with 1mm isotropic resolution using a dual-echo steady-state method at 3T
Vincent Gras 1 , Ezequiel Farrher 1 , Farida Grinberg 1 , and N Jon Shah 1,2
1
INM-4, Research Centre Jlich GmbH, Jlich,
Germany,
2
Department
of Neurology, RWTH Aachen University, Aachen, Germany
We investigate the applicability of the dual echo steady
state pulse sequence with diffusion-weighting field
gradients (DW-DESS) to characterize the anisotropic
diffusion of water molecules in a dedicated anisotropic
diffusion fibre phantom. The conventional diffusion
tensor imaging (DTI) model is used for the data analysis
and a comparison with the gold standard pulse sequence
for DTI, namely the DW spin-echo EPI sequence, is
carried out. A good agreement between both pulse
sequences is demonstrated. Finally the feasibility of
applying DW-DESS for high resolution DTI
in
vivo
is
discussed.
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