Table 3.

Geometric evaluation for all VOIs and auto-segmentation approaches: mean values for DSC, HD, mean HD and HD95. All mean values have been calculated by averaging over all 12 patients. For a reference, we also include the inter-expert variability (IEV), derived from the manual contours of three different experts.

VOI	method	$\overline{DSC}$	$\overline{HD}$ [mm]	$\overline{HD95}$ [mm]	$\overline{MSD}$ [mm]
right	A	0.74±0.04	15.07±5.03	6.84±1.95	2.24±0.75
parotid	B	0.80±0.03	16.51±6.96	5.65±1.41	1.61±0.43
	C	0.81±0.02	13.33±5.20	5.20±0.97	1.56±0.38
	IEV	0.84±0.04	10.76±4.35	4.97±1.66	1.40±0.45
left	A	0.77±0.04	13.89±5.36	5.84±1.64	1.84±0.54
parotid	B	0.82±0.03	15.00±4.62	5.17±1.62	1.47±0.41
	C	0.83±0.03	12.13±3.91	4.63±1.21	1.35±0.40
	IEV	0.83±0.04	10.94±3.75	5.27±1.76	1.59±0.63
spinal	A	0.71±0.08	12.72±3.91	7.68±3.56	2.26±1.10
cord	B	0.80±0.05	10.12±4.83	4.26±1.36	1.24±0.45
	C	0.80±0.05	10.35±3.75	4.39±1.33	1.21±0.44
	IEV	0.79±0.07	7.12±5.15	4.64±3.06	1.55±0.81
mandible	A	0.64±0.09	16.65±3.60	6.96±1.84	2.14±0.60
	B	0.80±0.04	13.33±4.06	4.31±1.05	1.10±0.28
	C	0.80±0.04	10.88±2.07	4.44±1.09	1.35±0.30
	IEV	0.85±0.04	8.94±3.16	3.85±1.56	0.92±0.45