Table 1. Comparison of visual estimation by two raters, the ABC/2 method and od-values in terms of predicting infarct sizes > 100 and > 70 ml.

	Sensitivity	Specificity	Accuracy	Positive predictive value	Negative predictive value
For predicting lesion size > 100 ml
Rater 1	50	100	90	100	89
Rater 2	60	100	92	100	91
ABC/2	100	66	76	56	100
od-value 42	90	98	96	90	98
For predicting lesion size > 70 ml
Rater 1	53	100	86	100	83
Rater 2	87	91	90	81	94
ABC/2	100	83	86	59	100
od-value 42	93	89	90	78	97

Data for rater 1 and 2 and the ABC/2 method were obtained from the compiled dataset of 50 patients. Od-values are obtained from the day 1 and day 2 lesions of the whole cohort (n = 108 for day 1 and n = 88 for day 2).