Table 3.

Overview of the individual object analysis results divided in two groups representing lesions with a size on mammography of 0.2 mm or 2 mammography image pixels

		Benign	Malignant	Test	Sign.
					P = 0.05
	Total Obj.N	182	414
Objects ≤ 0.0042 mm 3 (and larger than 2 micro-CT image voxels)	Obj.V (mm 3 )	0.0011 ± 0.0010	0.0011 ± 0.0010	T-test	ns
	Obj.S (mm 2 )	0.0504 ± 0.0374	0.0515 ± 0.0360	T-test	ns
	Obj.S/Obj.V (1/mm)	80.00 ± 36.29	73.71 ± 29.43	Independent samples Mann-Whitney U test	ns
	St.Th (mm)	0.0879 ± 0.0277	0.0882 ± 0.0315	T-test	ns
	SMI	3.13 ± 0.23	3.16 ± 0.2	T-test	ns
	Obj.N	93 (51%)	262 (63%)
Objects > 0.0042 mm 3	Obj.V (mm 3 )	0.0474 ± 0.0530	0.0152 ± 0.0230	Independent samples Mann-Whitney U test	s
	Obj.S (mm 2 )	0.8218 ± 0.7996	0.3618 ± 0.3659	Independent samples Mann-Whitney U test	s
	Obj.S/Obj.V (1/mm)	22.86 ± 7.14	29.71 ± 5.71	T-test	s
	St.Th (mm)	0.2300 ± 0.0658	0.1684 ± 0.0375	T-test	s
	SMI	3.02 ± 0.27	3.08 ± 0.21	Independent samples Mann-Whitney U test	ns
	Obj.N	65 (36%)	96 (23%)

Object Volume (Obj.V) in mm³, Object Surface (Obj.S) in mm², Object Surface/Object Volume (Obj.S/Obj.V) in 1/mm, Structure Thickness (St.Th) in mm, Structure Model Index (SMI), and Object Number (Obj.N). The %-value = percentage of particles of the full amount of benign or malignant particles.

In volume this is represented by a sphere with diameter 0.2 mm: volume = 0.0042 mm³.