Optimized CyberKnife Lung Treatment: Effect of Fractionated Tracking Volume Change on Tracking Results

Table 5

Peripheral/central lung cancer was compared for the first fraction with >1 fractional radiotherapy image parameters/tracking algorithm parameters (least significant difference: LSD method).

Tumor location	Fraction	G-B	G-A	Uncertainty B	Uncertainty A	dxAB
Peripheral	2	0.941	0.911	0.967	0.876	0.908
	3	0.700	0.714	0.583	0.319	0.785
	4	0.686	0.547	0.532	0.058	0.022
	5	0.132	0.030	0.107	0.018	0.001
	6	0.043	0.001	0.110	0.246	0.244
	7	0.000	0.000	0.215	0.140	0.079
Central	2	0.970	0.875	0.853	0.795	0.775
	3	0.761	0.673	0.347	0.310	0.643
	4	0.355	0.194	0.079	0.053	0.149
	5	0.081	0.112	0.004	0.001	0.200
	6	0.073	0.090	0.000	0.000	0.019
	7	0.054	0.005	0.000	0.000	0.001

Note: G: grayscale.