Table 2 Overall, acute (CTP-DWI ≤ 4 h) and delayed (CTP-DWI > 4 h) mean sensitivities (SE), specificities (SP), and accuracies (ACC) for each CTP parameter (left to right) when compared spatially with DWI on a voxel by voxel basis
Overall (n = 60) | ≤4 h (n = 31) | >4 h (n = 29) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Parameter | SE | SP | ACC | SE | SP | ACC | SE | SP | ACC |
AbsCBF | 50 % | 68 % | 54 % | 49 % | 69 % | 47 % | 51 % | 66 % | 62 % |
AbsCBV | 56 % | 64 % | 53 %¥ | 54 % | 68 % | 45 % | 58 %€ | 61 % | 61 % |
rCBF | 48 %*§ | 71 % | 57 % | 52 % | 68 % | 49 % | 44 %€ | 73 % | 67 % |
rCBV | 54 %* | 67 % | 57 % | 57 % | 67 % | 49 % | 50 % | 67 % | 66 % |
CBV Tracing | 61 %§ | 70 % | 60 %¥ | 65 % | 67 % | 48 % | 56 % | 74 % | 72 % |