Table 2. Semi-quantitative and quantitative CT perfusion (CTP) Alberta Stroke Program Early CT Score (ASPECTS) in 62 acute ischemic stroke patients categorized according to hemorrhagic transformation (HT) and clinical outcome.

	HT (n = 27)	no HT (n = 35)	p value	mRS≤2 (n = 42)	mRS>2 (n = 20)	p value
Semi-quantitative CTP ASPECTS
CBF (median, IQR, mean ± SD, range)	3, 1.5–4.5, 6.1±2.2, 2–9	6, 4.5–8, 3.3±2.4, 0–9	p<0.0001*	6, 3–8, 5.6±2.7, 0–9	4, 2–5, 3.5±2.2, 0–8	p<0.01*
CBV (median, IQR, mean ± SD, range)	7, 6–9, 7.2±1.8, 3–10	9, 9–10, 9.2±1.0, 6–10	p<0.00001^	9, 9–10, 8.8±1.4, 6–10	8, 6–8, 7.3±1.9, 3–10	p<0.01^
MTT (median, IQR, mean ± SD, range)	3, 2–5, 3.6±2.5, 0–9	6, 4–8, 6.0±2.4, 2–9	p<0.001*	6, 3–8, 5.6±2.7, 0–9	4, 2–5, 3.8±2.3, 0–8	p<0.02*
CTP mismatch (median, IQR, mean ± SD, range)	4, 2–5, 3.6±2.0, 0–7	3, 1–5, 3.2±2.3, 0–8	p = 0.488*	1, 1–1, 1.0±0.5, 0–2	4, 2–5, 3.5±2.0, 0–6	p = 0.686*
Quantitative CTP ASPECTS
CBF (median, IQR, mean ± SD, range)	4, 2–6, 3.9±2.6, 0–9	7, 5–8, 6.5±2.2, 2–10	p<0.0001*	7, 4–8, 6.1±2.5, 1–10	4, 2–5, 3.8±2.4, 0–8	p<0.001*
CBV (median, IQR, mean ± SD, range)	9, 7–9.5, 8.1±1.9, 4–10	10, 10–10, 9.6±0.9,6–10	p<0.001^	10, 9–10, 9.3±1.1, 6–10	9, 7–10, 8.1±2.1,4–10	p = 0.021^
MTT (median, IQR, mean ± SD, range)	1, 0–3, 2.0±2.5, 0–9	6, 3–7, 5.1±2.5, 0–9	p<0.0001*	5, 2–7, 4.7±3.0, 0–9	2, 0–2, 1.7±1.7, 0–6	p<0.001*
CTP mismatch (median, IQR, mean ± SD, range)	6, 4–8, 6.1±2.6, 0–10	4, 2,5–7, 4.5±2.6,0–10	p = 0.021*	1, 1–1, 1.0±0.5, 0–2	7, 5–8, 6.4±1.9, 4–10	p<0.02*

CBF = cerebral blood flow; CBV = cerebral blood volume; MTT = mean transit time; SD = Standard deviation; IQR = Interquartile range; mRS ≤ 2 = good outcome; mRS > 2 = poor outcome

statistical analysis = *t-test

^Mann-Whitney.