title: Clinical usefulness of the visibility of the transcerebral veins at 3T on T2*-weighted sequence in acute stroke patients.
abstract: OBJECTIVE
  The objective of this work was to investigate the clinical usefulness of the visibility of the transcerebral veins (VTV) in acute ischemic stroke patients at 3T.
  
  
  METHODS
  Sixty consecutive carotid artery territory stroke patients were included retrospectively. Two readers categorized the VTV on T2*-weighted sequence at 3T for each hemisphere, and asymmetry of this sign was assessed between each hemisphere by an asymmetry index (AI) using a three-item scale. The VTV and AI were correlated with clinical and radiological covariates. Particular interest was focused on patients for whom initial diffusion-weighted imaging alone was inconclusive.
  
  
  RESULTS
  VTV were detected in the stroke hemisphere in 58.3% (n = 35) and in the contralateral side in 10% (n = 6, p<0.0001). Asymmetry of the VTV between ischemic and contralateral hemispheres was present in 53.3% (n = 32). Intracranial artery occlusion, final infarct volume and symptomatic hemorrhagic transformation were correlated with a higher AI at baseline (ρ = 0.563, ρ = 0.291, and ρ = 0.285, p<0.05, respectively). Three hyperacute stroke patients with subtle DWI high signal intensity at admission demonstrated VTV.
  
  
  CONCLUSIONS
  The pathological value of the VTV seems to reside in its asymmetry between hemispheres, as it was correlated with important clinical parameters. This study also suggests that the VTV could be a supportive finding in stroke diagnosis, especially when DWI is unreliable.
authors: AP-HP, Urgences Cérébro-Vasculaires, Hôpital Pitié-Salpêtrière, 47-83 Bd de l'Hôpital, 75013 Paris, France. charlotte.rosso@gmail.com
authors: Charlotte
authors: C
authors: Rosso
authors: Martin
authors: M
authors: Belleville
authors: Christine
authors: C
authors: Pires
authors: Didier
authors: D
authors: Dormont
authors: Sophie
authors: S
authors: Crozier
authors: Jacques
authors: J
authors: Chiras
authors: Yves
authors: Y
authors: Samson
authors: Fabrice
authors: F
authors: Bonneville
mesh_terms: D000368:Aged; D002560:Cerebrovascular Circulation; D038524:Diffusion Magnetic Resonance Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D018709:Statistics, Nonparametric; D020521:Stroke / Q000473:pathology*; D014680:Veins / Q000473:pathology*