A Registration Method Based on Contour Point Cloud for 3D Whole-Body PET and CT Images

Table 2

The comparisons of two similarity metrics on 13 pairs of PET and CT data.

ID	Methodology
	Source data		The proposed method		MR + GD + MMI
	NC	ED	NC	ED	NC	ED
1	−0.50279	23.6101	−0.95232	1.87713	−0.90144	3.92457
2	−0.48013	30.0264	−0.95906	1.77737	−0.56848	19.6972
3	−0.52668	22.2486	−0.87322	6.35008	−0.73011	13.1091
4	−0.50683	23.8465	−0.95017	2.02653	−0.24907	52.8046
5	−0.49865	28.7776	−0.91258	4.09511	−0.57158	13.3536
6	−0.49636	25.7057	−0.93776	2.5987	−0.69698	7.43801
7	−0.47822	26.9906	−0.92210	3.01465	−0.52484	16.4022
8	−0.48632	26.5894	−0.93850	2.53644	−0.51073	14.3721
9	−0.48787	27.2716	−0.94317	2.16966	−0.61221	19.2727
10	−0.49576	23.6947	−0.90799	3.37168	−0.46089	15.2446
11	−0.49330	26.1713	−0.94317	2.34775	−0.52306	18.9303
12	−0.49176	26.4674	−0.94490	2.22978	−0.89865	4.13041
13	−0.50106	24.6159	−0.94265	2.34491	−0.73704	10.4277
Average	−0.49583	25.8474	−0.93289	2.82614	−0.61424	16.08516
Standard deviation	0.01255	2.2090	0.02341	1.23775	0.179473	12.23811