• Marc Giraud, Tae-Hee Cho, Norbert Nighoghossian, Delphine Maucort-Boulch, Gianluca Deiana, Leif Østergaard, Jean-Claude Baron, Jens Fiehler, Salvador Pedraza, Laurent Derex, and Yves Berthezène.
• Department of Neuroradiology, Université Lyon 1, CREATIS, CNRS UMR 5220-INSERM U1044, INSA-Lyon, Hospices Civils de Lyon, Lyon, France.
• J Neuroimaging. 2015 Nov 1; 25 (6): 959-63.

Background And PurposeWe sought to identify MRI factors associated with BBB changes at the acute stage of ischemic stroke.MethodsWe analyzed BBB changes on admission and within 3 hours after the first scan. BBB changes was defined as the presence of leptomeningeal and parenchymal contrast enhancement on T1-weighted imaging. Tmax , CBV, and DWI lesion volume were assessed on baseline MRI. Clinical and MRI factors associated with BBB changes were assessed by univariate and multivariate logistic regressions analyses.ResultsForty-four patients were included. BBB changes on baseline MRI was observed in 2 of 44 patients (3%). BBB disruption on H3-MRI was present in 19 of 44 patients (43%). Hemodynamic status and baseline ischemic core size were not different between patients with or without BBB changes. BBB alteration on H3 MRI was strongly associated with FLAIR MRI sequence positivity, 16/19 patients (83%) P = .001.ConclusionBBB changes are exceptional during the first 3 hours after stroke onset. Delayed BBB alteration was associated with FLAIR positivity mainly reflecting vasogenic edema.Copyright © 2015 by the American Society of Neuroimaging.

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