Abstract / Description of output
Blood-brain barrier (BBB) dysfunction has been implicated in ischemic risk following aneurysmal subarachnoid hemorrhage (aSAH), but never directly imaged. We prospectively examined whether post-bleed day 4 dynamic contrast-enhanced magnetic resonance (DCE-MR) BBB permeability imaging could predict development of delayed cerebral ischemia (DCI). Global MR-derived BBB permeability ( Ktrans) was significantly higher in aSAH patients who subsequently developed DCI (five patients; 2.28 ± 0.09 × 10-3 min-1) compared to those who experienced radiographic vasospasm only (three patients; 1.85 ± 0.12 × 10-3 min-1; p < 0.05), or no vasospasm/ischemia (eight patients; 1.74 ± 0.07 × 10-3 min-1; p < 0.01). Ktrans > 2 × 10-3 min-1 predicted development of DCI (AUC = 0.98, 95% CI: 0.93-1). Global BBB dysfunction following aSAH is detectable with DCE-MR and predictive of ischemic risk.
Original language | English |
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Pages (from-to) | 973-979 |
Number of pages | 7 |
Journal | Journal of Cerebral Blood Flow and Metabolism |
Volume | 38 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2018 |
Keywords / Materials (for Non-textual outputs)
- Adult
- Aged
- Aged, 80 and over
- Blood-Brain Barrier/diagnostic imaging
- Brain Ischemia/diagnostic imaging
- Female
- Humans
- Magnetic Resonance Imaging
- Male
- Middle Aged
- Permeability
- Predictive Value of Tests
- Subarachnoid Hemorrhage/diagnostic imaging
- Vasospasm, Intracranial/diagnostic imaging