Rapid Automated Target Segmentation and Tracking on 4D Data without Initial Contours

Table 1

Dice similarity coefficients, sensitivity, and PPV between GTV contours generated with the proposed MPSL method and DIR based segmentation.

Case number	Dice			Sensitivity			PPV
	MPSL versus manual	DIR versus manual	MPSL versus DIR	MPSL versus manual	DIR versus manual	MPSL versus DIR	MPSL versus manual	DIR versus manual	MPSL versus DIR
1	0.882	0.984	0.885	0.836	0.979	0.843	0.933	0.988	0.931
2	0.872	0.914	0.856	0.805	0.907	0.796	0.950	0.921	0.925
3	0.860	0.915	0.877	0.801	0.878	0.850	0.929	0.955	0.906
4	0.941	0.941	0.914	0.901	0.956	0.863	0.984	0.927	0.971
5	0.825	0.949	0.823	0.723	0.963	0.711	0.962	0.935	0.975
6	0.845	0.841	0.792	0.876	0.945	0.737	0.816	0.758	0.855
7	0.854	0.929	0.830	0.775	0.926	0.755	0.951	0.931	0.921
8	0.887	0.885	0.828	0.899	0.954	0.781	0.875	0.825	0.880
9	0.819	0.826	0.785	0.830	0.932	0.713	0.809	0.742	0.873
Average	0.865	0.909	0.843	0.827	0.938	0.783	0.912	0.887	0.915
St. dev.	0.037	0.051	0.043	0.059	0.031	0.059	0.064	0.089	0.042