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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Stroke. 2013 Aug 29;44(11):3084–3089. doi: 10.1161/STROKEAHA.113.002260

Figure 2. Example of a Low PIRI-score without significant mismatch loss.

Figure 2

34 year-old man presenting five hours after right hemispheric stroke onset with admission NIHSS score of 11. Axial images show: (A) acute proximal MCA occlusion with high collateral flow (versus contralateral) on CTA (arrow), (B) with a large MR-MTT hypoperfused lesion. (C) However normal insula on admission ADC/DWI (PIRI score 0,) and (D) only minimal (13%) tissue-at-risk infarcted on 48-hour follow-up CT despite lack of treatment with IV-tPA or IAT.