Table 2.

Accuracy index (AI) and inter-delineation distances (IDD), based on the expert consensus (EC) delineation as the reference. The differences in AI and IDD between CT and MRI were statistically significant (p < 0.05)

			CT						MRI
Case
		IDD [mm]			AI			IDD [mm]			AI
	Mean	SD	CoV [%]	Mean	SD	CoV [%]	Mean	(SD)	CoV [%]	Mean	SD	CoV [%]
1	2.1	0.8	38	0.88	0.02	3	1.8	0.58	32	0.88	0.01	2
2	3.6	1.9	53	0.78	0.1	12	3.2	1.9	59	0.83	0.02	3
3	3.9	2.6	67	0.67	0.07	10	3.2	1.8	56	0.78	0.02	2
4	2.3	1	43	0.75	0.06	8	2.3	0.9	39	0.77	0.05	6
5	6	4	67	0.61	0.15	24	4.5	2.1	47	0.73	0.14	20
6	2.6	1.1	42	0.82	0.02	2	2.6	1	38	0.83	0.02	2
7	6	4.1	68	0.64	0.09	14	3.6	1.8	50	0.76	0.05	7
8	2.4	1.2	50	0.85	0.02	2	2.2	1	45	0.86	0.04	4
9	3	2.9	97	0.81	0.04	5	2.9	1.8	62	0.80	0.05	6
10	4.5	3.5	78	0.77	0.07	9	3.3	2	61	0.84	0.02	2
11	3.3	2	61	0.74	0.09	12	2.5	1.3	52	0.83	0.02	3
12	3.4	2.3	68	0.77	0.06	8	3.6	1.7	47	0.80	0.02	2
MEAN	3.6	2.3	61	0.76	0.07	9	3	1.5	49	0.81	0.04	5

CoV = Coefficient of Variance; CTV_LC = Clinical Target Volume of Lumpectomy Cavity; SD = Standard Deviation