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Abstract #4790

Quantitative assessment of the cortical vessel sign after mechanical stroke treatment

Gnther Grabner 1,2 , Klaus A. Hausegger 1 , Michael Hauser 1 , Sonja M. Obmann 3 , Jrg R. Weber 3 , and Thomas Kau 1

1 Institute of Diagnostic and Interventional Radiology, General Hospital of Klagenfurt, Klagenfurt, Carinthia, Austria, 2 Carinthia University of Applied Sciences, Klagenfurt, Carinthia, Austria, 3 Department of Neurology, General Hospital of Klagenfurt, Klagenfurt, Carinthia, Austria

The cortical vessel sign (CVS) on susceptibility-weighted images (SWI) is a known phenomenon in case of ischemic stroke. Here we evaluated the CVS which is defined by an enhanced visibility of venous blood vessels quantitatively in 13 patients in the subacute stage of embolic stroke. The CVS evaluation was based on automatic vessel segmentation and the definition of 3 dimensional ROIs. While the CVS may occasionally be positive in the region of irreversible ischemic brain infarction, automatic quantitative CVS analysis showed no significant difference between paired vascular territories in the subacute stage after mechanical thrombectomy.

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