Analysis of inter-fraction setup errors and organ motion by daily kilovoltage cone beam computed tomography in intensity modulated radiotherapy of prostate cancer

Table 1 Statistics of variables (in mm) for each patient (i) and for all fractions for X (LR), Y (SI), Z (AP) directions

	X_T		X_B		X_T- X_B		Y_T		Y_B		Y_T- Y_B		Z_T		Z_B		Z_T-Z_B
Patient:	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i	μ_i	σ_i
1	4.1	2.4	4.7	2.2	-0.6	1.6	-2.0	2.0	-0.9	1.8	-1.1	1.6	-0.1	3.7	-1.4	2.2	1.3	2.3
2	4.2	3.4	4.9	2.7	-0.8	1.3	-3.7	3.6	-1.3	1.5	-2.4	3.5	6.2	4.7	9.6	4.2	-3.4	3.0
3	-2.2	2.0	-0.8	1.7	-1.3	1.1	0.5	1.9	0.7	1.4	-0.2	1.9	-4.6	3.1	-4.3	2.9	-0.4	1.2
4	-2.1	1.8	-1.4	1.4	-0.8	1.1	0.6	3.0	-0.5	1.9	1.1	2.6	5.9	4.7	-1.1	3.1	7.0	3.0
5	1.3	2.0	1.5	2.0	-0.2	0.8	0.6	2.3	0.3	1.5	0.3	1.5	0.7	2.3	-1.3	2.1	1.9	1.7
6	-4.0	3.3	-2.4	2.9	-1.6	1.5	0.9	2.2	1.2	1.7	-0.3	1.6	1.3	4.8	-2.1	2.7	3.4	3.9
7	0.9	3.2	1.3	2.9	-0.4	0.7	5.0	2.3	4.7	2.1	0.2	1.0	-3.9	4.6	-5.8	2.7	1.9	3.8
8	-2.4	2.5	-0.8	1.9	-1.6	1.8	-3.8	3.8	-3.5	1.8	-0.3	3.0	13.4	5.7	5.1	3.6	8.3	4.5
9	-3.3	2.8	-2.6	3.0	-0.7	1.1	-4.5	2.6	-0.5	1.7	-4.0	2.7	6.3	4.9	1.7	3.8	4.6	3.2
10	0.3	3.5	0.9	3.5	-0.6	0.6	-0.5	1.6	1.5	1.2	-1.9	1.3	4.0	3.1	2.6	2.8	1.4	1.5
11	5.3	2.4	6.7	2.5	-1.4	1.2	-4.7	2.8	-1.8	3.0	-2.9	1.7	8.5	4.0	8.9	3.5	-0.4	1.8
12	0.3	2.8	0.8	2.6	-0.5	0.8	-2.3	1.9	-1.2	1.3	-1.1	1.8	5.2	3.1	1.0	3.2	4.3	2.2
13	-1.0	1.9	0.4	1.3	-1.3	1.0	-1.9	2.7	0.1	1.5	-2.0	2.5	2.2	3.2	1.8	2.2	0.4	2.0
14	-0.7	3.0	0.7	2.3	-1.4	1.5	0.1	2.0	1.1	1.4	-1.0	1.5	0.0	4.1	-2.6	2.8	2.5	3.0
15	-0.7	1.8	0.7	1.5	-1.4	1.1	0.7	2.1	1.9	2.3	-1.2	1.9	-3.0	5.6	-5.4	5.8	2.4	3.0
16	1.8	1.9	3.8	1.4	-2.0	1.1	-1.8	2.5	-2.9	1.7	1.1	1.8	7.9	2.8	2.4	1.8	5.4	2.1
17	-5.1	3.4	-4.4	3.2	-0.6	1.0	-0.8	1.8	-0.2	1.8	-0.6	1.5	0.2	3.1	-2.2	3.1	2.4	2.0
18	1.6	2.5	2.9	2.0	-1.3	1.3	-2.8	2.1	-0.8	1.4	-1.9	2.0	5.5	4.1	0.6	3.4	4.9	3.3
Errors:	M	σ	M	σ	M	σ	M	σ	M	σ	M	σ	M	σ	M	σ	M	σ
	-0.1	2.6	0.9	2.4	-1.0	1.2	-1.1	2.5	-0.1	1.8	-1.0	2.1	3.2	4.1	0.4	3.2	2.7	2.8
Σ		2.9		2.9		0.5		2.4		1.9		1.3		4.7		4.3		2.8
F *	39.9		50.5		6.2		34.5		42		15.8		48.8		62.5		36.7
KW-χ² *	359.9		399.9		98.9		314.5		317.6		206.5		361.9		383.4		330.1
Levene *		2.2	.	2.6		4.5		2.7		3.5		4.5		3.6		5.2		5.1

*The values shown in the Table for the statistical tests F, KW-χ² show that all the differences are significant with p < 1% and the Levene test with p < 5%

ISSN: 1748-717X