Table 6.

Highest prescription dose achieved (using 2 Gy steps from the standard prescription of 70 Gy) to the mean of CTV1, maintaining all other objectives and OAR doses within tolerance. TNM stages are given for each patient

		Prescription Dose (mean to CTV1 in Gy)
	Stage	IMRT	VMAT	$\mathrm{\Delta }(\mathit{\text{IMRT}}-\mathit{\text{VMAT}})$
P1	${\mathrm{T}}_3{\mathrm{N}}_2$	94.0	96.0	$-2.0$
P2	${\mathrm{T}}_1{\mathrm{N}}_2$	88.0	86.0	2.0
P3	${\mathrm{T}}_2{\mathrm{N}}_3$ a	102.0	84.0	18.0
P4	${\mathrm{T}}_2{\mathrm{N}}_1$	82.0	88.0	$-6.0$
P5	${\mathrm{T}}_1{\mathrm{N}}_1$ a	86.0	96.0	$-10.0$
P6	${\mathrm{T}}_3{\mathrm{N}}_1$ a	76.0	86.0	$-10.0$
P7	${\mathrm{T}}_2{\mathrm{N}}_2$ a	88.0	84.0	4.0
P8	${\mathrm{T}}_3{\mathrm{N}}_2$	92.0	92.0	0.0
P9	${\mathrm{T}}_2{\mathrm{N}}_1$	98.0	98.0	0.0
P10	${\mathrm{T}}_3{\mathrm{N}}_1$ a	110.0	98.0	12.0
Average		91.6	90.8	0.8