Table 1.

Mean spatial overlap metrics, with 95% confidence intervals, assessing infarct segmentation accuracy in two-dimensional slices using each CTP parameter.

Perfusion Parameter	Dice Coefficient	Sensitivity	Specificity	Accuracy	PPV	NPV
CBF	0.66±0.01	0.70±0.04	0.99±0.01	0.98±0.01	0.72±0.03	0.99±0.01
CBV	0.35±0.06	0.35±0.09	0.99±0.01	0.97±0.01	0.42±0.07	0.99±0.01
TTP	0.57±0.03	0.64±0.06	0.99±0.01	0.98±0.01	0.60±0.04	0.99±0.01
MTT	0.56±0.02	0.69±0.05	0.99±0.01	0.97±0.01	0.57±0.04	0.99±0.01
Delay Time	0.52±0.04	0.61±0.07	0.99±0.01	0.97±0.01	0.55±0.04	0.99±0.01