Table 2.

Dosimetric parameter mean values and standard deviations.

Structure	3D-CRT	JO-IMRT	p-value
	Mean ± SD	Mean ± SD
D98 (%)	93.22 ± 4.16	94.16 ± 1.90	0.312
D95 (%)	96.64 ± 2.51	98.31 ± 1.05	0.00448
Dmean(Gy)	72.1 ± 0.80	72.5 ± 0.60	0.649
CI	0.73 ± 0.10	0.83 ± 0.05	0.000113
HI	0.14 ± 0.06	0.14 ± 0.02	0.6047
GI	1.06 ± 0.03	1.38 ± 0.16	3.708 × 10-10
Spinal cord (Dmax) (Gy)	43.78 ± 1.01	41.81 ± 2.28	<0.0003
Brainstem (Dmax) (Gy)	44.62 ± 4.01	46.13 ± 2.74	0.1274
RT parotid gland (Dmean) (Gy)	56.75 ± 7.23	27.84 ± 3.29	2.2 × 10−16
LT parotid gland (Dmean) (Gy)	56.96 ± 6.15	27.23 ± 3.85	2.2 × 10−16