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

Table 4

Comparing parameters of the synchronous respiratory tracking algorithm between the first time and >1 fractionated radiotherapy (least significant difference: LSD method).

(i) fraction	(j) fraction	Left lung			Right lung
		Uncertainty B	Uncertainty A	dxAB	Uncertainty B	Uncertainty A	dxAB
1	2	0.898	0.933	0.901	0.883	0.693	0.809
3		0.723	0.610	0.708	0.406	0.146	0.653
4		0.501	0.792	0.248	0.279	0.095	0.029
5		0.149	0.171	0.022	0.088	0.008	0.002
6		0.013	0.020	0.001	0.160	0.274	0.214
7		0.072	0.774	0.000	0.346	0.311	0.262

Note: the chart shows the single-factor multiple comparison results of the tracking algorithm parameters of the first fractional radiotherapy with >1. The table shows the image guidance images of the first radiotherapy as the standard reference, and all the image parameters are increasing with the fractional changes. However, is for Uncertainty A of the left lung after 6 fractions.