Table 3:

Sensitivity and specificity of the brain imaging coverage to assess PCT penumbra / (infarct + penumbra) ratio >20% compared with 80-mm z-axis coverage

Coverage (mm)	Sensitivity (%)	Specificity (%)
5	95	91
10	95	91
15	95	91
20	95	91
25	95	100
30	98	91
35	95	100
40	98	100
45	98	100
50	100	100
55	100	100
60	100	100
65	100	100
70	100	100
75	100	100
80 (criterion standard)	100	100

Note:—Bold numbers indicate the PCT coverages for which a 100% sensitivity and a 100% specificity are achieved.