Voxel-wise body composition analysis using image registration of a three-slice CT imaging protocol: methodology and proof-of-concept studies

Table 1 Comparison of performance metrics for 3-slice CT registration methods

Cohort	Slice	Sex	Subjects	VME (mm)	IME (HU)	Number of folds	Registration time (s)^a
SCAPIS	Liver	M	500	2.41 ± 1.28	37.28 ± 7.3	0.16 ± 0.5	5
	Liver	F	453	2.47 ± 1.61	33.24 ± 5.28	0.18 ± 0.45	4.5
	Abdomen	M	502	2.84 ± 1.53	48.67 ± 5.85	1.03 ± 5.29	6.5
	Abdomen	F	455	2.75 ± 1.79	45.41 ± 5.49	0.97 ± 7.4	7
	Thigh	M	502	1.97 ± 0.86	29.08 ± 4.36	0.64 ± 4.52	5
	Thigh	F	455	1.33 ± 0.73	28.81 ± 4.23	0.49 ± 2.04	5.5
IGT	Liver	M	784	2.04 ± 0.92	31.11 ± 7.04	0.14 ± 1.46	4.5
	Liver	F	990	2.15 ± 1.03	32.82 ± 5.52	0.59 ± 1.12	4
	Abdomen	M	812	2.99 ± 1.23	49.7 ± 6.87	0.91 ± 6.09	7.5
	Abdomen	F	1011	2.73 ± 1.06	43.24 ± 6.94	0.71 ± 4.43	6.5
	Thigh	M	812	1.29 ± 0.87	30.91 ± 5.89	0.82 ± 6.51	5.5
	Thigh	F	1009	1.11 ± 0.56	26.04 ± 4.91	0.53 ± 8.89	6

Data are presented as mean ± STD for vector magnitude error (VME), intensity magnitude error (IME), and Hounsfield unit (HU)
^aOnly mean was measured

ISSN: 1475-925X