Table 2.

Task 1 (pre-radiotherapy segmentation) results for participating teams. Results are shown in descending order by mean aggregated DSC (DSCagg). DSCagg scores for primary gross tumor volume (GTVp) and metastatic lymph nodes (GTVn) are also shown. Highest scores for each category are bolded. The performance of the mean, baseline nnU-Net, interobserver variability (derived in section 2.3), anonymized withdrawn teams are also shown at the bottom of the table. Values are rounded to the nearest 3rd decimal place.

Position	Team name	DSCagg mean	DSCagg GTVp	DSCagg GTVn
1	TUMOR	0.825	0.778	0.873
2	HiLab	0.824	0.785	0.862
3	Stockholm_Trio	0.822	0.795	0.849
4	CEMRG	0.815	0.769	0.860
5	mic-dkfz	0.812	0.756	0.869
6	RUG_UMCG	0.812	0.773	0.851
7	alpinists	0.810	0.767	0.852
8	SZTU-SingularMatrix	0.807	0.759	0.854
9	SJTU&NINTH PEOPLE’S HOSPITAL	0.806	0.767	0.845
10	DCPT-Stine’s group	0.796	0.751	0.842
11	UW LAIR	0.794	0.745	0.844
12	NeuralRad	0.792	0.732	0.852
13	lWM	0.771	0.717	0.826
14	dlabella29	0.771	0.720	0.822
15	PocketNet	0.770	0.732	0.808
16	andrei.iantsen	0.752	0.709	0.794
17	FinoxyAI	0.737	0.697	0.777
18	ECU	0.571	0.495	0.646
NA	Mean	0.783	0.734	0.829
NA	nnU-Net baseline	0.817	0.769	0.865
NA	Interobserver variability	0.806	0.757	0.854
NA	Withdrawn team 1	0.774	0.726	0.822
NA	Withdrawn team 2	0.793	0.751	0.836