Stroke: ASL-identified collateral vessels linked to favorable neurologic outcomes

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Takeaway

  • Collateral vessels identified by arterial spin labeling (ASL) MRI are associated with improved neurological outcomes of patients with acute ischemic stroke.

Why this matters

  • Robust collaterals have previously been linked to better outcomes, but ASL is a new technique for collateral detection and outcome prediction.

Key results

  • Collaterals on ASL were associated with lower median modified Rankin Scale (mRS) score at discharge (2 vs 4; P=.005).
  • Collaterals on ASL were associated with good outcomes at discharge (mRS score 0-2; 60.0% vs 15.4%; P=.02).
  • Collaterals on ASL were associ...