Abstract #4758
Patterns of collateralization in acute ischemic stroke in the posterior circulation
Alex Frster 1 , Holger Wenz 1 , Hans Ulrich Kerl 1 , and Christoph Groden 1
1
Neuroradiology, Universittsmedizin
Mannheim, Mannheim, Baden-Wrttemberg, Germany
Assessment of collateral flow in posterior circulation
stroke (PCS) by MRI techniques has not been studied
systematically. We aimed to investigate collateral flow
in 38 PCS patients with two different approaches:
presence of FLAIR vascular hyperintensities (FVH) and
dynamic 4D angiograms generated from perfusion-weighted
raw images. Collateral flow as represented by FVH was
present in 30 (78.9%) patients with PCS.
Collateralization grade on dynamic 4D angiograms was 0
in 1 (3.3%), 1 in 9 (23.7%), 3 in 18 (47.4%), and 4 in
10 (26.3%) patients. Collateralization in PCS can be
assessed in detail by different static and dynamic MRI
techniques.
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