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

Table 3

Comparing grayscale differences of the tracking volume between the first and >1 fractionated radiotherapy (least significant difference: LSD).

(i) fraction	(j) fraction	Left lung		Right lung
		G-B	G-A	G-B	G-A
1	2	0.928	0.958	0.948	0.781
	3	0.502	0.843	0.792	0.496
	4	0.054	0.496	0.361	0.119
	5	0.001	0.141	0.077	0.005
	6	0.0	0.013	0.022	0.0
	7	0.0	0.035	0.118	0.0

Note: G: grayscale.