Quantitative analysis of perfusion CTP
| Stroke Group (n = 19) | Seizure Group (n = 17) | P | |
|---|---|---|---|
| Hypoperfusion pattern | |||
| Symptomatic ROI | |||
| Tmax ratio | 1.98 [SD, 0.62] | 1.50 [SD, 0.36] | .01 |
| MTT ratio | 1.15 [SD, 0.14] | 0.99 [SD, 0.16] | .002 |
| CBV ratio | 0.88 [SD, 0.19] | 0.86 [SD, 0.31] | .42 |
| CBF ratio | 0.97 [SD, 0.39] | 0.84 [SD, 0.19] | .38 |
| Frontal ROI | |||
| Tmax ratio | 1.01 [SD, 0.24] | 1.18 [SD, 0.27] | .05 |
| MTT ratio | 1.02 [SD, 0.09] | 0.95 [SD, 0.19] | .12 |
| CBV ratio | 1.03 [SD, 0.18] | 0.90 [SD, 0.26] | .23 |
| CBF ratio | 1.01 [SD, 0.13] | 0.93 [SD, 0.15] | .36 |
| Temporal ROI | |||
| Tmax ratio | 0.99 [SD, 0.24] | 1.35 [SD, 0.45] | <.01 |
| MTT ratio | 0.92 [SD, 0.21] | 0.95 [SD, 0.24] | 1 |
| CBV ratio | 0.90 [SD, 0.27] | 0.92 [SD, 0.32] | .67 |
| CBF ratio | 0.98 [SD, 0.14] | 0.93 [SD, 0.24] | .12 |
| Thalamic ROI | |||
| Tmax ratio | 1.05 [SD, 0.41] | 1.32 [SD, 0.70] | .20 |
| MTT ratio | 0.99 [SD, 0.23] | 1.03 [SD, 0.21] | .53 |
| CBV ratio | 0.94 [SD, 0.26] | 0.97 [SD, 0.22] | .66 |
| CBF ratio | 0.99 [SD, 0.21] | 0.97 [SD, 0.24] | .57 |
| Cerebellar ROI | n = 10b | n = 8b | |
| Tmax ratio | 0.95 [SD, 0.32] | 0.98 [SD, 0.21] | 1 |
| MTT ratio | 1.02 [SD, 0.14] | 1.09 [SD, 0.3] | .69 |
| CBV ratio | 0.99 [SD, 0.21]] | 1.14 [SD, 0.45] | .62 |
| CBF ratio | 0.97 [SD, 0.13] | 1.03 [SD, 0.21] | .46 |
| Normoperfusion pattern | n = 30 | n = 12 | |
| Symptomatic ROI | |||
| Tmax ratio | 1.15 [SD, 0.51] | 1.00 [SD, 0.45] | .55 |
| MTT ratio | 0.99 [SD, 0.12] | 1.04 [SD, 0.24] | .85 |
| CBV ratio | 1.08 [SD, 0.53] | 1.18 [SD, 0.41] | .67 |
| CBF ratio | 1.06 [SD, 0.39] | 1.14 [SD, 0.34] | .45 |
| Frontal ROI | |||
| Tmax ratio | 1.01 [SD, 0.12] | 1.02 [SD, 0.14] | .72 |
| MTT ratio | 1 [SD, 0.05] | 1.01 [SD, 0.06] | .46 |
| CBV ratio | 1.01 [SD, 0.08] | 0.99 [SD, 0.13] | .61 |
| CBF ratio | 1 [SD, 0.06] | 0.98 [SD, 0.08] | .60 |
| Temporal ROI | |||
| Tmax ratio | 1.15 [SD, 0.3] | 0.96 [SD, 0.20 | .07 |
| MTT ratio | 1 [SD, 0.19] | 1.02 [SD, 0.19] | .99 |
| CBV ratio | 0.97 [SD, 0.23] | 0.99 [SD, 0.19] | .38 |
| CBF ratio | 0.96 [SD, 0.13] | 0.99 [SD, 0.14] | .30 |
| Thalamic ROI | |||
| Tmax ratio | 1.11 [SD, 0.36] | 1.04 [SD, 0.34] | .94 |
| MTT ratio | 0.95 [SD, 0.17] | 0.95 [SD, 0.23] | .99 |
| CBV ratio | 0.97 [SD, 0.25] | 1.09 [SD, 0.40] | .52 |
| CBF ratio | 0.98 [SD, 0.14] | 1.08 [SD, 0.18] | .1 |
| Cerebellar ROI | n = 10b | n = 8b | |
| Tmax ratio | 1.01 [SD, 0.16] | 0.94 [SD, 0.08] | .14 |
| MTT ratio | 1.02 [SD, 0.15] | 1.10 [SD, 0.30] | .93 |
| CBV ratio | 1.04 [SD, 0.17] | 1.13 [SD, 0.33] | .87 |
| CBF ratio | 1.02 [SD, 0.09] | 1.07 [SD, 0.10] | .21 |
a Values are mean [SD].
↵b For 9 patients in each group, perfusion analysis of the cerebellar ROI could not be performed because of the poor quality of perfusion maps.