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Abstract #1505

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

1 Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands, 2 Erwin 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 improved.

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