Modified Fisher Grading Scale (SAH)
Select the modified Fisher grade (0–4) based on SAH thickness and intraventricular hemorrhage.
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How it works
Modified Fisher refines CT appearance (including IVH) to stratify vasospasm risk after aneurysmal SAH.
Limits
Imaging timing, interobserver variation, and adjunct biomarkers are not captured.
Educational tool only—not for diagnosis or treatment decisions.