Abstract #1421
Brain Imaging with 7T vs. 9.4T: A direct Comparison of MR parameters and SNR
Rolf Pohmann 1 and Klaus Scheffler 1,2
1
Magnetic Resonance Center, Max Planck
Institute for Biological Cybernetics, Tbingen, Germany,
2
Department
of Bioimaging, University of Tbingen, Germany
Increasing the magnetic field strength beyond 7 T is
expected to result in an increase of SNR, but this may
be limited by the more unfavorable relaxation times, the
B
1
inhomogeneity and the more difficult coil
design. Here, SNR and MR parameters are compared for
field strengths of 3 T, 7 T and 9.4 T. After correction
for flip angle variations, a strong gain in SNR of
almost a factor of two is found when going from 7 T to
9.4 T, but increasing inhomogeous B
1
-fields
and shorter T
2
*
demand
for improved imaging techniques.
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