Patients’ perfusion-weighted imaging findings observed with the different arterial input function estimation methods
| Local | Regional | Regional Scaled | Global | |
|---|---|---|---|---|
| Th | ||||
| Hypo | 7 | 2 | 7 (1) | 8 (2) |
| Hyper | 12 (2) | 10 | 9 (1) | 15 (2) |
| Cong | 8 (2) | 10 (2) | 11 (2) | 9 (2) |
| Norm | 12 (36%) | 14 (42%) | 7 (21%) | 7 (21%) |
| CO | ||||
| Hypo | 12 (6) | 15 (9) | 16 (5) | 16 (8) |
| Hyper | 5 (3) | 10 (4) | 8 (3) | 4 (3) |
| Cong | 12 (5) | 9 (1) | 6 (2) | 9 (3) |
| Norm | 7 (21%) | 5 (15%) | 6 (18%) | 7 (21%) |
| Th & Co | ||||
| Hypo | 3 | 1 | 3 (1) | 6 |
| Hyper | 3 (1) | 3 | 2 (1) | 3 |
| Cong | 2 | 2 | 2 | 0 |
| Norm | 3 (9%) | 2 (6%) | 3 (9%) | 2 (6%) |
Note:—Hypo indicates hypoperfusion; Hyper, hyperperfusion; Cong, venous congestion; Norm, normal; Th, thalami; CO, centrum ovale. Within the Hypo, Hyper, and Cong entries, numbers in parentheses indicate perfusion-weighted imaging abnormalities that are bilateral.