Table 1.

Patient characteristics.

Patient	Age (y)	Sex	Stage	Primary dose (Gy)	Elective intermediate dose (Gy)	Elective low dose (Gy)	No. of fractions	PTV V95 IMPT (%)	PTV V95 VMAT (%)
1	76	M	T2N0	50.4		45	28	99.96	99.14
2	48	F	T3N3	54	50.4	45	30	95.26	91.95
3	84	F	T3N2	54	50.4	45	30	97.97	98.59
4	62	M	T2N0	50.4		42	28	99.58	99.01
5	50	F	T3N0	54		45	30	100	100
6	57	M	T4N1	54		45	30	99.45	98.24
7	56	M	T3N2	54	50.4	45	30	99.6	97.29
8	60	F	T3N1	54	50.4	45	30	100	99.24
9	70	F	T2N0	50.4		42	28	100	99.53

Abbreviations: PTV, planning target volume; IMPT, intensity-modulated proton therapy; VMAT, volumetric arc therapy; M, male; F, female.