TABLE 3.

Averaged 3D gamma passing rates (%GP) and mean WET for cCBCT and vCT at different treatment sites. The better of the two algorithms are highlighted in bold font.

	HN	Lung	Prostate
%GP (1%/1 mm), cCBCT	95.4% ± 2.3%	91.7% ± 4.3%	97.9% ± 1.4%
%GP (1%/1 mm), vCT	93.9% ± 1.5%	94.6% ± 4.3%	98.3% ± 1.0%
%GP (2%/2 mm), cCBCT	98.6% ± 0.9%	97.5% ± 1.8%	99.4% ± 0.6%
%GP (2%/2 mm), vCT	97.8% ± 0.7%	98.1% ± 2.0%	99.5% ± 0.4%
WETdQACT (mm)	44.8 ± 19.0	85.9 ± 22.5	166.1 ± 12.2
∆WETcCBCTa (mm)	0.1 ± 0.4	0.0 ± 0.4	0.3 ± 1.1
∆WETvCTb (mm)	0.5 ± 0.6	0.7 ± 0.5	1.7 ± 1.4
p-value (∆WET)	p = 0.02	p = 0.18	p = 0.0002

^aWET_cCBCT-WET_dQACT.

^bWET_vCT-WET_dQACT.