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. 2023 Mar 14;100(11):e1148–e1158. doi: 10.1212/WNL.0000000000201687

Figure 3. Example of a Patient With Favorable HIR.

Figure 3

(A) A 13-year-old presented with cardioembolic stroke 3 hours after last known well. Initial pNIHSS 8 and small stroke core with MR-DWI volume of 11 mL. (B) Favorable HIR 0.1 before thrombectomy, indicating good collateral status. (C) Limited stroke burden after successful thrombectomy with minimal infarct growth, calculated volume 21 mL. Abbreviations: DWI = diffusion-weighted imaging; HIR = hypoperfusion intensity ratio; pNIHSS = pediatric National Institutes of Health Stroke Scale.