MULTISLAB MULTIBAND 3D TIME-OF-FLIGHT MAGNETIC RESONANCE ANGIOGRAPHY FOR IMPROVED CONTRAST AND REDUCED ACQUISITION TIME
Jenni Schulz 1 , Rasim Boyacioglu 1 , and David G Norris 1,2
Donders Institute for Brain, Cognition and
Behaviour, Radboud University Nijmegen, Nijmegen,
L. Hahn Institute for Magnetic Resonance Imaging,
University Duisburg-Essen, Essen, Germany
3D-TOF-MRA is commonly used for imaging intracranial
vessels. This NCE-MRA technique is based on inflow
enhancement suppressing stationary tissue.
Unfortunately, it suffers from time-inefficiency. This
problem can be overcome by exciting multiple slabs
simultaneously which can be reconstructed with a fast
low resolution 3D-FLASH reference scan. Acquisition time
will be decreased by a factor almost equal to the number
of simultaneously excited slabs. The obtained results
are comparable to the reference and CNR is maintained
which leads to an increase in CNR efficiency.
Furthermore, by reducing the thickness of the slabs in
the multislab multiband acquisition, in-flow contrast is
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