Comparative evaluation of image registration methods with different interest regions in lung cancer radiotherapy

BMC Medical Imaging

Table 3 Comparison of general conditions and different registration methods between small tumors and large tumors

Index	Small tumors (n = 27)	Large tumors (n = 26)	P
Age (Years)	72 ± 11.3	67 ± 13.2	0.222
Sex (Male, %)	15 (56%)	17 (65%)	0.474
Left Lung volume (cc)	1087.29 ± 292.41	1404.65 ± 532.47	0.009
Right Lung volume (cc)	1547.73 ± 527.97	1837.12 ± 593.11	0.066
Tumor location			0.917
Left Lung	17	16
Right Lung	10	10
Tumor genotyping			0.058
Central type	14	20
Peripheral type	13	6
Whole lung registration (absolute value)
X axis (mm)	2.148 ± 1.634	2.231 ± 2.160	0.876
Y axis (mm)	4.741 ± 4.129	5.962 ± 5.653	0.372
Z axis (mm)	2.630 ± 2.272	2.615 ± 1.813	0.980
Tumor registration (absolute value)
X axis (mm)	2.593 ± 1.824	2.192 ± 2.772	0.291
Y axis (mm)	4.037 ± 2.981	3.769 ± 3.410	0.762
Z axis (mm)	2.407 ± 1.907	3.000 ± 2.135	0.536
Vertebral registration (absolute value)
X axis (mm)	2.704 ± 1.857	1.885 ± 1.532	0.086
Y axis (mm)	4.593 ± 3.856	4.346 ± 3.611	0.811
Z axis (mm)	1.889 ± 1.476	2.231 ± 1.904	0.467
Affected lung registration (absolute value)
X axis (mm)	2.407 ± 1.986	2.500 ± 2.470	0.939
Y axis (mm)	4.815 ± 4.114	4.462 ± 3.870	0.749
Z axis (mm)	2.815 ± 1.618	2.769 ± 2.612	0.881
Artificial registration (absolute value)
X axis (mm)	2.259 ± 1.831	1.808 ± 1.650	0.350
Y axis (mm)	4.296 ± 3.698	3.808 ± 2.940	0.598
Z axis (mm)	1.852 ± 1.586	2.346 ± 2.190	0.351

ISSN: 1471-2342