Table 2.

Inter-rater agreement results (mean ± standard deviation) on a subset of the testset (n = 5) for MRA and CTA in terms of binary and class average Dice scores, centerline Dice (clDice) scores, binary and class average errors of the zero-th Betti number β₀. The binary Dice, binary β₀ errors, and clDice scores were computed on the merged binary class. The class-average Dice scores and β₀ errors were computed for each class separately and the average was taken per case. The arrow indicates the favorable direction.

Inter-rater Agreement for Challenge Metrics
Modality	Binary Dice (%) ↑	Per case class-average Dice (%) ↑	clDice (%) ↑	Binary β0 error ↓	Per case class-average β0 error ↓
CTA	94.86 ± 2.24	90.91 ± 3.35	99.72 ± 0.24	0 ± 0	0 ± 0
MRA	96.49 ± 2.01	90.21 ± 4.02	99.49 ± 0.80	0.4 ± 0.55	0.07 ± 0.07