Abstract #0754
Whole Brain Pulsed Arterial Spin Labelling at Ultra High Field with a B1 + -optimised Adiabatic Labelling Pulse
Kieran O'Brien 1,2 , Fabian Zimmer 2 , Steffen Bollmann 2 , Josef Pfeuffer 3 , Keith Heberlein 4 , and Markus Barth 2
1
Healthcare Sector, Siemens Ltd, Brisbane,
Australia,
2
The
Centre for Advanced Imaging, The University of
Queensland, Brisbane, Australia,
3
Siemens
Healthcare, Erlangen, Germany,
4
Siemens
Healthcare, Boston, MA, United States
Pulsed Arterial Spin Labelling (ASL) techniques should
benefit from the increased signal to noise ratio
available at ultra high field. Previous proof-of-concept
ASL studies have been limited to the superior regions of
the brain due to poor labelling efficiency of the blood
in the neck. We propose and show that through replacing
the frequency offset corrected inversion (FOCI)
adiabatic pulse with a low-B1 power time resampled (TR-)FOCI
pulse we can obtain reliable perfusion signal at 7T
across the whole brain without the need for dielectric
pads or dedicated labelling coils.
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