Abstract #2073
Distortion-Corrected High Resolution Zoomed fMRI at 9.4 T
Jonas Bause 1,2 , Myung-Ho In 3 , Philipp Ehses 1,4 , G. Shajan 1 , Oliver Speck 3 , Rolf Pohmann 1 , and Klaus Scheffler 1,4
1
High-Field Magnetic Resonance Center, Max
Planck Insitute for Biological Cybernetics, Tuebingen,
Germany,
2
Graduate
Training Centre for Neuroscience, University of
Tuebingen, Tuebingen, Germany,
3
Department
for Biomedical Magnetic Resonance, University of
Magdeburg, Magdeburg, Germany,
4
Department
of Biomedical Magnetic Resonance, University of
Tuebingen, Tuebingen, Germany
High-resolution EPI at ultra-high field often suffers
from distortions and requires a short time to k-space
center in order to achieve the optimal BOLD contrast. In
this work, zoomed functional imaging was combined with
the point spread function mapping technique in order to
obtain images with re-duced distortions acquired with
the optimal TE for fMRI at 9.4T. The approach was tested
in a functional experiment with 0.8 mm and 0.65 mm
iso-tropic resolution. Activation maps obtained from the
distortion corrected images showed a higher number of
activated voxels then the maps from the undistorted
images and match well with anatomy.
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