Abstract #1425
Functional ASL at 9.4 T a comparison between balanced SSFP and GRE-EPI readout
Jonas Bause 1,2 , Philipp Ehses 1,3 , G. Shajan 1 , Klaus Scheffler 1,3 , and Rolf Pohmann 1
1
High-Field Magnetic Resonance, MPI for
biological Cybernetics, Tuebingen, BW, Germany,
2
Graduate
Training Center of Neuroscience, International
Max-Planck Research School, Tuebingen, BW, Germany,
3
Department
for Biomedical Magnetic Resonance, University of
Tuebingen, Tuebingen, BW, Germany
Functional ASL has a higher specificity and
reproducibility than BOLD fMRI. However, the perfusion
related signal is typically in the range of a few
percent and the spatial and temporal resolution of
arterial spin labeling imaging rather limited. ASL at
ultra-high field can benefit from higher intrinsic SNR
and increased longitudinal relaxation times. We
investigated bSSFP and GRE-EPI as possible readout
schemes for fASL studies at 9.4 T and were able to
measure the first time stimulus evoked perfusion changes
in the human motor cortex at this field strength.
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