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To investigate the changes of prominent vessel sign (PVS) and susceptibility vessel sign (SVS) in acute ischemic stroke (AIS) patients with successful and non-successful vascular recanalization treatment, and to study the associations between the susceptibility-weighted imaging (SWI) findings and early clinical and imaging prognosis. Thirty-five patients with the acute MCA territory infarction were retrospectively included and classified into Group re  (n = 25) and Group non  (n = 10) according to the success of vascular recanalization. NIHSS was used for clinical assessment. PVS and DWI were analyzed using ASPECT scores. Baseline, post-treatment, the changes of PVS and SVS, and SVS length were recorded and compared between two groups. Correlation analysis was performed between SWI factors and early post-treatment clinical and imaging factors. The mean PVS pre  value was 5.20 ± 1.76 and PVS post  was 8.20 ± 1.86. PVS pre  and PVS post  showed statistical significance between Group re  and Group non  (both  p  &lt; 0.001). A significant difference wasfound in SVS post (+) ( p  &lt; 0.001), SVS post-pre (+) ( p  = 0.001), SVS post-pre  length (p = 0.036) and SVSpost length (p = 0.001) between the two groups.  A positive correlation was found between PVS pre  and DWI post  ( p  &lt; 0.001, r = 0.564). There were positive correlations between PVS-DWI mismatch and NIHSS post  in Group re  ( p  = 0.042, r = 0.410) and in Group non  ( p  = 0.006, r = 0.789). PVS and SVS changes are influenced by the success of vascular recanalization. However, the changes are unrelated to either early clinical or imaging outcomes in AIS patients. PVS-DWI mismatch can be taken as an imaging biomarker for early clinical outcomes, both for patients with or without successful vascular recanalization.

neurological research

Changes of prominent vessel sign and susceptibility vessel sign in acute ischemic stroke patients with and without successful recanalization: a study based on susceptibility weighted images