Table 1.

Values of planning parameters used to create eight different treatment plans. FW – field width, PF – pitch factor, and MF – modulation factor.

Plan name	FW	PF	MF planned	MF actual PTV1 Mean ± SD	MF actual PTV2 Mean ± SD
Reference	1.05	0.107	3.5	2.47 ± 0.32	2.26 ± 0.39
Default	2.5	0.215	2.5	2.01 ± 0.14	1.94 ± 0.22
FW = 1.05	1.05	0.215	2.5	2.05 ± 0.28	2.17 ± 0.14
FW = 5	5	0.215	2.5	1.86 ± 0.14	1.88 ± 0.13
PF = 0.107	2.5	0.107	2.5	1.89 ± 0.16	1.77 ± 0.15
PF = 0.43	2.5	0.43	2.5	2.10 ± 0.13	2.02 ± 0.16
MF = 1.5	2.5	0.215	1.5	1.25 ± 0.06	1.31 ± 0.05
MF = 3.5	2.5	0.215	3.5	2.80 ± 0.21	2.64 ± 0.22