Table 1.

Mean percentage dose differences and gamma passing rates (GPR) between the sCT and dCT scans for the 3 sites. Values in parenthesis refer to 1 standard deviation.

	corrCBCT	vCT
Head-and-Neck
Dose differences (80 % th)/%	0.6 (0.08)	0.6 (0.14)
Dose differences (50 % th))/%	0.9 (0.21)	0.9 (0.24)
2 %/2 mm GPR (80 % th)/%	99.8 (0.23)	99.5 (0.43)
2 %/2 mm GPR (50 % th)/%	99.1 (0.43)	98.9 (0.57)
1 %/1 mm GPR (80 % th)/%	85.2 (2.54)	81.9 (4.12)
1 %/1 mm GPR (50 % th)/%	88.1 (2.54)	85.7 (3.48)
Pelvis
Dose differences (80 % th))/%	0.8 (0.18)	0.5 (0.08)
Dose differences (50 % th))/%	1.3 (0.55)	0.7 (0.23)
2 %/2 mm GPR (80 % th)/%	98.6 (1.52)	99.9 (0.15)
2 %/2 mm GPR (50 % th)/%	98.8 (1.05)	99.7 (0.34)
1 %/1 mm GPR (80 % th)/%	71.4 (9.50)	83.3 (6.59)
1 %/1 mm GPR (50 % th)/%	89.4 (9.50)	93.7 (1.87)
Thorax-and-Abdomen
Dose differences (80 % th))/%	1.4 (0.95)	1.3 (1.19)
Dose differences (50 % th))/%	1.7 (0.91)	1.4 (0.74)
2 %/2 mm GPR (80 % th)/%	93.9 (7.86)	95.3 (4.57)
2 %/2 mm GPR (50 % th)/%	94.9 (3.35)	94.5 (4.95)
1 %/1 mm GPR (80 % th)/%	69.1 (15.23)	73.0 (10.44)
1 %/1 mm GPR (50 % th)/%	78.0 (15.23)	77.9 (12.92)