Structures		E5		E10		E20
Structures		Mean (%)	SD	Mean (%)	SD	Mean (%)	SD
PTV 70	D50	−0.98	0.61	−0.61	0.85	−0.38	0.92
	D95	−1.70	0.75	−1.18	0.63	−0.95	1.01
	D2	−1.25	0.99	−0.05	1.19	0.04	1.04
PTV 63	D50	−1.66	0.53	−1.41	0.82	−1.24	0.60
	D95	−1.84	0.58	−1.79	0.85	−1.59	0.66
	D2	−1.20	0.75	−0.95	1.10	−0.86	0.93
PTV 56	D50	−1.94	0.47	−1.51	0.45	−1.35	0.33
	D95	−2.12	0.48	−2.01	0.33	−1.76	0.20
	D2	−1.75	0.81	−1.33	0.89	−1.20	0.86
Cord	Dmax	−4.90	2.59	−4.84	2.07	−4.35	1.94
Parotid L	Dmean	−3.26	2.51	−1.77	2.10	−1.31	2.15
Parotid R	Dmean	−3.50	2.10	−3.08	1.81	−2.62	2.06