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Table 4: 
Sensitivity and specificity of the brain imaging coverage to assess PCT penumbra / (infarct + penumbra) ratio >50% compared with 80-mm z-axis coverage
Coverage (mm) Sensitivity (%) Specificity (%)
5 87 85
10 87 85
15 87 85
20 87 90
25 90 85
30 94 90
35 94 90
40 90 95
45 94 90
50 94 95
55 94 95
60 97 100
65 94 95
70 97 100
75 100 100
80 (criterion standard) 100 100
Coverage (mm)	Sensitivity (%)	Specificity (%)
5	87	85
10	87	85
15	87	85
20	87	90
25	90	85
30	94	90
35	94	90
40	90	95
45	94	90
50	94	95
55	94	95
60	97	100
65	94	95
70	97	100
75	100	100
80 (criterion standard)	100	100