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Table 5: Abnormal perfusion-weighted imaging findings in patients among the different arterial input function estimation methods
Patient No. Local Regional Regional Scaled Global
Hypo Hyper Cong Norm Hypo Hyper Cong Norm Hypo Hyper Cong Norm Hypo Hyper Cong Norm
1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 1
2 0 0 1 0 0 0 1 0 0 0 1 0 1 0 1 0
3 0 0 1 0 1 0 1 0 0 1 1 0 1 1 1 0
4 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 0
5 1 0 1 0 1 0 0 0 0 1 1 0 1 0 1 0
6 1 0 0 0 1 0 0 0 1 1 0 0 1 0 0 0
7 0 0 0 1 1 0 1 0 0 1 1 0 0 0 1 0
8 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0
9 0 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0
10 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0
11 1 1 1 0 1 1 1 0 0 1 0 0 0 1 1 0
12 1 1 1 0 0 1 1 0 0 1 0 0 0 1 1 0
13 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0
14 1 1 1 0 1 1 1 0 0 1 1 0 1 1 1 0
15 1 0 0 0 1 1 0 0 1 1 0 0 1 0 0 0
16 1 1 1 0 1 0 1 0 0 1 1 0 1 0 1 0
17 1 0 0 0 1 0 0 0 0 1 0 0 1 1 1 0
18 1 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0
19 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1
20 1 0 1 0 1 0 1 0 0 1 1 0 1 0 1 0
21 0 0 1 0 0 0 1 0 0 0 1 0 0 1 1 0
22 0 1 1 0 1 1 1 0 0 1 1 0 1 1 1 0
23 0 0 1 0 0 0 1 0 1 1 0 0 1 0 0 0
24 0 1 1 0 0 1 1 0 0 0 1 0 0 0 1 0
25 0 0 0 1 1 0 0 0 1 1 0 0 1 0 0 0
26 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0
27 1 1 0 0 1 1 1 0 1 1 0 0 1 0 1 0
28 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0
29 1 1 0 0 0 1 0 0 0 1 0 0 1 1 0 0
30 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0
31 0 1 1 0 0 1 0 0 0 1 1 0 0 1 0 0
32 0 0 0 1 0 0 0 1 1 0 0 0 1 0 1 0
33 0 0 1 0 0 1 1 0 0 0 0 1 1 0 0 0
Note:—O indicates absent; 1, present. Only 5 of 33 patients (15%) had identical perfusion-weighted imaging abnormalities among the different arterial input function methods (shaded areas). Hypo indicates hypoperfusion; Hyper, hyperperfusion; Cong, venous congestion; Norm, normal.