Table 2.

Summary of the median comparison metrics for three observers contouring all ten patients for each imaging type (with interquartile range in brackets). * Denotes a statistically significant difference when compared to T2*W using a significance level of P = 0.0167 (Bonferroni correction)

Imaging modality	Hausdorff distance (mm)	Mean distance (mm)	Cohen's kappa	Dice similarity co‐efficient
CT	5.01* (4.68–5.71)	0.77* (0.69–0.86)	0.92* (0.89–0.93)	0.95* (0.94–0.96)
T2W	4.09 (3.57–4.89)	0.53 (0.48–0.61)	0.94 (0.93–0.96)	0.97 (0.96–0.97)
T2*W	3.61 (3.16–3.73)	0.45 (0.43–0.48)	0.95 (0.94–0.96)	0.97 (0.96–0.97)