Table 4.

Segmentation results for the UZ Gent cMRI data when using SPA initialization. Mean Dice-score ± standard deviation is reported for active tumor, necrosis, edema, the tumor core and the whole tumor. The number of undetected cases is reported for active tumor, necrosis and edema.

		NMF			Clustering
		HALS	Convex	hNMF	FCM	GMM	SC
Dice [%]	Tumor	64 ± 16	60 ± 21	68 ± 18	60 ± 20	64 ± 21	66 ± 20
	Necrosis	51 ± 29	49 ± 31	55 ± 29	39 ± 31	46 ± 30	58 ± 27
	Edema	28 ± 25	18 ± 27	43 ± 25	31 ± 28	15 ± 28	40 ± 26
	Core	72 ± 17	69 ± 21	74 ± 16	69 ± 19	69 ± 20	69 ± 17
	Whole	78 ± 14	78 ± 17	81 ± 12	77 ± 17	79 ± 17	80 ± 14
Undetected [#]	Tumor	0/21	0/21	0/21	0/21	0/21	0/21
	Necrosis	2/12	2/12	2/12	3/12	2/12	1/12
	Edema	7/15	9/15	5/15	7/15	10/15	5/15