Abstract #3166
Potential gain of a 256 channel head coil at 7T: combined measurements and g-factor calculations
Arjan D. Hendriks 1 , Michel G.M. Italiaander 2 , Natalia Petridou 1 , and Dennis W.J. Klomp 1,2
1
Department of Radiology, University Medical
Center Utrecht, Utrecht, Netherlands,
2
MR
Coils B.V., Drunen, Netherlands
Recent developments in high-density surface receiver
arrays, together with high BOLD sensitivity at 7T, allow
human fMRI at ~0.5mm isotropic resolution and a volume
acquisition time in the order of few seconds. However,
with element sizes of 1x2cm and 32-channels, these
benefits are limited to a small field of view. In this
study, the expected g-factor gain of a 256-channel
surface coil is estimated by combining 8 measurements of
a high-density 32 channel surface coil. Results show
that benefits achieved with 32-channels can extend to
256-channels. Full head coverage and decreased g-factors
(gain in SNR or acceleration) can be achieved.
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